×
验证码:
换一张
忘记密码？
记住我
×
登录
中文版
|
English
中国科学院昆明植物研究所知识管理系统
Knowledge Management System of Kunming Institute of Botany,CAS
登录
注册
ALL
ORCID
题名
作者
学科领域
关键词
资助项目
文献类型
出处
收录类别
出版者
发表日期
存缴日期
学科门类
学习讨论厅
图片搜索
粘贴图片网址
首页
研究单元&专题
作者
文献类型
学科分类
知识图谱
新闻&公告
在结果中检索
研究单元&专题
昆明植物所硕博研... [249]
资源植物与生物技术... [34]
共享文献 [17]
中国科学院东亚植物... [11]
中国西南野生生物种... [10]
离退休 [9]
更多...
作者
杨永平 [2]
胡虹 [2]
杨云强 [2]
刘爱忠 [2]
李雄 [2]
夏恩华 [2]
更多...
文献类型
学位论文 [249]
期刊论文 [99]
专著 [2]
会议录 [2]
发表日期
2018 [30]
2017 [40]
2016 [30]
2015 [22]
2014 [13]
2013 [29]
更多...
语种
中文 [352]
出处
植物分类与资源学报 [22]
云南植物研究 [19]
生态学报 [6]
安徽农业科学 [4]
云南植物研究 [3]
广西植物 [3]
更多...
资助项目
6 could use lots of photosynthates, but contributed little to the accumulation of biomass. 4. Photosynthetic rate of P. armeniacum decreased a little at the noon, and the highest photosynthetic rate was observed at 10:00h in the greenhouse. The variation of photosynthetic rate was in the same trend as stomatal conductance. Higher relative humidity seemed to be the key for higher photosynthetic rate in P. armeniacum. 5. The photosynthetic capacity of C. flavum was statistically larger than that of P. armeniacum. The lower leaf photosynthetic capacity of P. armeniacum was related to its lower leaf nitrogen concentration,leaf phosphorus concentration and enzyme activities. Meanwhile, the extremely lower stomatal conductance and internal mesophyll conductance might greatly limit the photosynthetic capacity of P. armeniacum. The lower stomatal conductance and photosynthetic rate of Paphiopedilum might partially caused by the lack of chloroplasts in the guard cell of Paphiopedilum. Compared with C. flavum, P. armeniacum was more fond of shade environment.6. The short longevity leaf of Cypripedium had bigger photosynthetic capacity and greater potential for fast growth. But the longer LL of Paphiopedilum enhanced nutrient conservation which could compensate its lower photosynthetic capacity. The short longevity leaf of Cypripedium usually had higher photosynthetic rate per unit leaf mass and dark respiration rate, and photosynthetic capacity decreased fast with leaf age. However, for Paphiopedilum, the situation was the opposite. 7. Compared with Cypripedium, Paphiopedilum had higher water use efficiency and lower photosynthetic nitrogen use efficiency. 8. The leaf of Paphiopedilum had higher leaf construction cost and longer repayment time than that of Cypripedium. The leaf structures and physiological functions of Paphiopedilum and Cypripedium reflected the adaptation to their habitats. The leaf morphological and physiological evolution of Paphiopedilum was related to water and resource-conserving traits in the karst habitat. The leaf traits of Cypripedium were the adaptation to the environment rich in water and nutrients but easy to change with seasons.Our results provided evidence of divergent evolution of congeneric orchids under natural selection.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=dc.language.iso_filter%3A%E4%B8%AD%E6%96%87&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Physiology&order=desc&&fq=dc.project.title_filter%3APaphiopedilum%5C+and%5C+Cypripedium%5C+are%5C+close%5C+relatives%5C+belonging%5C+to%5C+the%5C+subfamily%5C+Cypripedioideae.%5C+However%2C%5C+they%5C+undergo%5C+considerable%5C+divergence%5C+in%5C+the%5C+aspects%5C+of%5C+life%5C+forms%2C%5C+leaf%5C+traits%5C+and%5C+habitats.%5C+In%5C+present%5C+study%2C%5C+leaf%5C+morphologies%5C+and%5C+anatomical%5C+structures%2C%5C+leaf%5C+lifespans%2C%5C+leaf%5C+mass%5C+per%5C+area%2C%5C+photosynthetic%5C+capacities%2C%5C+nutrient%5C+use%5C+efficiencies%2C%5C+leaf%5C+construction%5C+costs%2C%5C+and%5C+maintenance%5C+costs%5C+were%5C+investigated%5C+to%5C+understand%5C+the%5C+relationship%5C+between%5C+leaf%5C+traits%5C+and%5C+ecophysiological%5C+adaptability%5C+of%5C+the%5C+two%5C+types%5C+of%5C+plants%5C+and%5C+explore%5C+the%5C+related%5C+ecological%5C+and%5C+evolutionary%5C+significances.%5C+The%5C+results%5C+suggest%5C+that%5C%3A1.%5C+Compared%5C+with%5C+Cypripedium%2C%5C+Paphiopedilum%5C+was%5C+characterized%5C+by%5C+drought%5C+tolerance%5C+from%5C+its%5C+leaf%5C+anatomical%5C+structure%5C+including%5C+fleshy%5C+leaf%2C%5C+thicker%5C+surface%5C+cuticle%2C%5C+huge%5C+abaxial%5C+epidermis%5C+cells%2C%5C+differentiation%5C+of%5C+palisade%5C+and%5C+spongy%5C+mesophyll%5C+layers%2C%5C+the%5C+prominent%5C+of%5C+mucilaginous%5C+substances%2C%5C+supportable%5C+leaf%5C+main%5C+vein%2C%5C+lower%5C+total%5C+stoma%5C+area%5C+%5C%28%25%5C%29%2C%5C+sunken%5C+stomata%5C+and%5C+special%5C+stoma%5C+structure.%5C+Leaf%5C+morphologies%5C+and%5C+structures%5C+of%5C+Cypripedium%5C+were%5C+to%5C+the%5C+contrary%5C+of%5C+Paphiopedilum.%5C+Leaf%5C+morphologies%5C+and%5C+structures%5C+embodied%5C+the%5C+adaptation%5C+to%5C+the%5C+environment%5C+in%5C+both%5C+Paphiopedilum%5C+and%5C+Cypripedium.%5C+Our%5C+results%5C+also%5C+confirmed%5C+the%5C+previous%5C+observation%5C+that%5C+Paphiopedilum%5C+was%5C+the%5C+only%5C+genus%5C+that%5C+did%5C+not%5C+possess%5C+guard%5C+cell%5C+chloroplasts.2.%5C+The%5C+photosynthetic%5C+capacities%5C+of%5C+P.%5C+armeniacum%5C+leaves%5C+were%5C+different%5C+with%5C+different%5C+leaf%5C+ages.%5C+The%5C+highest%5C+photosynthetic%5C+capacity%5C+occurred%5C+in%5C+leaf%5C+age%5C+1%5C-2%5C+years%2C%5C+followed%5C+by%5C+1%5C+year%5C+and%5C+2%5C-4%5C+years.%5C+The%5C+highest%5C+photosynthetic%5C+capacity%5C+of%5C+C.%5C+flavum%5C+occurred%5C+in%5C+leaf%5C+age%5C+60%5C+days%2C%5C+followed%5C+by%5C+30%5C+days%2C%5C+90%5C+days%5C+and%5C+120%5C+days.%5C+3.%5C+Photosynthetic%5C+capacities%5C+of%5C+different%5C+leaf%5C+positions%5C+were%5C+mainly%5C+affected%5C+by%5C+leaf%5C+ages%5C+in%5C+P.%5C+armeniacum.%5C+The%5C+four%5C+leaves%5C+lying%5C+on%5C+the%5C+top%5C+did%5C+the%5C+most%5C+accumulation%5C+of%5C+the%5C+assimilation%5C+products%5C+in%5C+the%5C+whole%5C+plant.%5C+The%5C+leaves%5C+of%5C+sequence%5C+number%5C+%3E%5C+6%5C+could%5C+use%5C+lots%5C+of%5C+photosynthates%2C%5C+but%5C+contributed%5C+little%5C+to%5C+the%5C+accumulation%5C+of%5C+biomass.%5C+4.%5C+Photosynthetic%5C+rate%5C+of%5C+P.%5C+armeniacum%5C+decreased%5C+a%5C+little%5C+at%5C+the%5C+noon%2C%5C+and%5C+the%5C+highest%5C+photosynthetic%5C+rate%5C+was%5C+observed%5C+at%5C+10%5C%3A00h%5C+in%5C+the%5C+greenhouse.%5C+The%5C+variation%5C+of%5C+photosynthetic%5C+rate%5C+was%5C+in%5C+the%5C+same%5C+trend%5C+as%5C+stomatal%5C+conductance.%5C+Higher%5C+relative%5C+humidity%5C+seemed%5C+to%5C+be%5C+the%5C+key%5C+for%5C+higher%5C+photosynthetic%5C+rate%5C+in%5C+P.%5C+armeniacum.%5C+5.%5C+The%5C+photosynthetic%5C+capacity%5C+of%5C+C.%5C+flavum%5C+was%5C+statistically%5C+larger%5C+than%5C+that%5C+of%5C+P.%5C+armeniacum.%5C+The%5C+lower%5C+leaf%5C+photosynthetic%5C+capacity%5C+of%5C+P.%5C+armeniacum%5C+was%5C+related%5C+to%5C+its%5C+lower%5C+leaf%5C+nitrogen%5C+concentration%2Cleaf%5C+phosphorus%5C+concentration%5C+and%5C+enzyme%5C+activities.%5C+Meanwhile%2C%5C+the%5C+extremely%5C+lower%5C+stomatal%5C+conductance%5C+and%5C+internal%5C+mesophyll%5C+conductance%5C+might%5C+greatly%5C+limit%5C+the%5C+photosynthetic%5C+capacity%5C+of%5C+P.%5C+armeniacum.%5C+The%5C+lower%5C+stomatal%5C+conductance%5C+and%5C+photosynthetic%5C+rate%5C+of%5C+Paphiopedilum%5C+might%5C+partially%5C+caused%5C+by%5C+the%5C+lack%5C+of%5C+chloroplasts%5C+in%5C+the%5C+guard%5C+cell%5C+of%5C+Paphiopedilum.%5C+Compared%5C+with%5C+C.%5C+flavum%2C%5C+P.%5C+armeniacum%5C+was%5C+more%5C+fond%5C+of%5C+shade%5C+environment.6.%5C+The%5C+short%5C+longevity%5C+leaf%5C+of%5C+Cypripedium%5C+had%5C+bigger%5C+photosynthetic%5C+capacity%5C+and%5C+greater%5C+potential%5C+for%5C+fast%5C+growth.%5C+But%5C+the%5C+longer%5C+LL%5C+of%5C+Paphiopedilum%5C+enhanced%5C+nutrient%5C+conservation%5C+which%5C+could%5C+compensate%5C+its%5C+lower%5C+photosynthetic%5C+capacity.%5C+The%5C+short%5C+longevity%5C+leaf%5C+of%5C+Cypripedium%5C+usually%5C+had%5C+higher%5C+photosynthetic%5C+rate%5C+per%5C+unit%5C+leaf%5C+mass%5C+and%5C+dark%5C+respiration%5C+rate%2C%5C+and%5C+photosynthetic%5C+capacity%5C+decreased%5C+fast%5C+with%5C+leaf%5C+age.%5C+However%2C%5C+for%5C+Paphiopedilum%2C%5C+the%5C+situation%5C+was%5C+the%5C+opposite.%5C+7.%5C+Compared%5C+with%5C+Cypripedium%2C%5C+Paphiopedilum%5C+had%5C+higher%5C+water%5C+use%5C+efficiency%5C+and%5C+lower%5C+photosynthetic%5C+nitrogen%5C+use%5C+efficiency.%5C+8.%5C+The%5C+leaf%5C+of%5C+Paphiopedilum%5C+had%5C+higher%5C+leaf%5C+construction%5C+cost%5C+and%5C+longer%5C+repayment%5C+time%5C+than%5C+that%5C+of%5C+Cypripedium.%5C+The%5C+leaf%5C+structures%5C+and%5C+physiological%5C+functions%5C+of%5C+Paphiopedilum%5C+and%5C+Cypripedium%5C+reflected%5C+the%5C+adaptation%5C+to%5C+their%5C+habitats.%5C+The%5C+leaf%5C+morphological%5C+and%5C+physiological%5C+evolution%5C+of%5C+Paphiopedilum%5C+was%5C+related%5C+to%5C+water%5C+and%5C+resource%5C-conserving%5C+traits%5C+in%5C+the%5C+karst%5C+habitat.%5C+The%5C+leaf%5C+traits%5C+of%5C+Cypripedium%5C+were%5C+the%5C+adaptation%5C+to%5C+the%5C+environment%5C+rich%5C+in%5C+water%5C+and%5C+nutrients%5C+but%5C+easy%5C+to%5C+change%5C+with%5C+seasons.Our%5C+results%5C+provided%5C+evidence%5C+of%5C+divergent%5C+evolution%5C+of%5C+congeneric%5C+orchids%5C+under%5C+natural%5C+selection."},{"jsname":"Paphiopedilum and Cypripedium，known as slipper orchids in horticulture, belong to the subfamily Cypripedioideae of the Orchidaceae. Although they are closely related phylogenetically, there are significant differences in leaf traits and geographical distributions between two genera. This dissertation includes the following sections: (1) the leaf functional traits were compared in six species of the two genera; (2) the physiological responses of P. armeniacum to different water regimes, light regimes and low temperature; (3) the leaf phenotypic plastics of C. flavum in response to the different light condition and the photosynthetic characteristics of three Cypripedium species during sexual reproduction. The aims are to understand the convergent and divergent evolution between the two genera in leaf traits and their adaptive significances, and the leaf plastic responses to different levels of resources. Such information could provide scientific basis for conservation and domestication of Paphiopedilum and Cypripedium. The results are given below:1. Compared with Paphiopedilum, Cypripedium showed significantly higher photosynthetic rate (Pmax), leaf nitrogen content (Na), photosynthetic nitrogen utilization (PNUE), the fractions of leaf nitrogen partitioning in carboxylation (PC) and bioenergetics (PB), specific leaf area (SLA), ratio of leaf chlorophyll a and b (Chla/b), but significantly lower leaf construction cost (CC) and the ratio of leaf carbon content to leaf nitrogen (C/N). These leaf traits of Cypripedium are considered as the adaptation to short growing period and rich soil nutrients in the alpine habitats. Conversely, the long life span, low Pmax and mesophyll conductance (gm) but high SLA, CC and C/N in Paphiopedilum indicated that the adaptation to low-light, limited-nutrient habitat in the limestone area. As a sympatric species of Paphiopedilum, C. lentiginosum not only kept phylogenetically leaf traits of Cypripedium, suchas stomatal conductance (gs), Pmax, PNUE and dormant in winter, but also possessed many leaf traits which is similar to that in Paphiopedilum, such as relative stomatal limitations (RSL), gm, the ratio of leaf chlorophyll a and b (Chl a/b), fraction of leaf nitrogen allocated to light-harvesting components (PL). These results indicated the convergent and divergent evolution of Paphiopedilum and Cypripedium in leaf traits.2. Paphiopedilum. armeniacum exhibited a high plasticity of leaf photosynthetic function in response to different light regimes, but the responses changes with the time. Due to grow under low light habitat, P. armeniacum grown under 50% shade (HL) had the significantly lowest Pmax than the plants grown under 75% shade (ML) and 95% shade (LL) after six months. However, after twelve months, the Pmax of the plants grown under HL increased significantly and then became the highest one among three levels of light. It is also found that leaf dry mass per unit area (LMA), leaf stomatal conductance (gS), internal mesophyll conductance (gm), the fraction of leaf nitrogen partitioning in photosynthetic carboxylation (PC), bioeneretics (PB) were greatly influenced by irradiance. The plants grown under HL increased gS, gm, PC, PB to increase Pmax. In addition, the plants grown under HL had the highest ratio of total chlorophyll content to total Carotenoid content (Car/Chl) while the plants grown under LL had the lowest ratio of leaf chlorophyll a and b (Chl a/b). As a result, plasticity of leaf photosynthetic physiology of P. armeniacum in response to different light regimes depended largely on leaf nitrogen partitioning and leaf structure. As for the numbers of flowering and fruiting, ML was the best light level.3. The responses of P. armeniacum to different water regimes were not significantly different. But the Pmax and the maximum photochemical efficiency of PSⅡ (Fv/Fm) decreased with the increased frequency of watering. The reasons were that the plants have high respiration rate (Rd) and make more use of light energy to oxidation cycle. The plants watered every eight days (MW) and every twenty days (LW) had higher Pmax than the plant watered every four days (HW) mainly because of the higher PC and PB. Besides, the leaves of P. armeniacum had excellent property for holding water also contributed to the high photosynthetic capacity.4. Paphiopedilum. armeniacum was very sensitive to the low temperature. The plants significantly decreased photosynthetic capacity after grown under 4℃ for three days and the photosynthetic machinery was destroyed after fifteen days. The photosynthetic capacity of P. armeniacum exhibited no change at 10℃ and 15℃.5. Cypripedium flavum of four habitats (DB, XRD, XZD and TSQ) with different light intensity exhibited different photosynthetic characteristics after transplanted to the same environment in Kunming. Among the habitats, the light intensity of DB was the highest while XRD was the lowest. The light intensity of XZD and TSQ were not significantly difference. Among all the plants in Kunming, the plants of DB had the significantly highest Pmax but the plants of XRD had the lowest Pmax. The light saturation point (LSP) and photosynthetic nitrogen use efficiency (PNUE) agreed well with the light intensity of four habitats and contributed to the high Pmax of DB. The LMA, Chl and leaf nitrogen content were not different among all the plants. C. flavum exhibited sensitively response to the change of light in leaf construction while kept the plasticity of leaf photosynthetic characteristics which developed from its own habitat.6. The photosynthetic capacity of C. tibeticum and C. flavum were significantly increased at the flowering stage. For these two species, the significantly increased Amax were closely related to the maximum carboxylation rate by ribulose-1, 5-bisphosphate carboxylase/oxygenase (Vcmax), photon saturated rate of electron transport (Jmax), the rate of triose phosphate utilization (TPU) and actual quantum efficiency of the photosystem II photochemistry (ΦPSII) respectively. However, flowering almost did not affect the photosynthetic capacity of C. guttatum. C. guttatum had the smallest plant size, the leaf area, the volume of labellum and the volume of fruit, but the biggest fruit volume per leaf area among three species. These results indicated that for C. flavum and C. tibeticum there were a physiological mechanism in photosynthesis to compensate the cost of flowering as well as increased resource acquisitions, which would be beneficial to the survival or future flowering of the plant. C. gutattum could keep a steady photosynthetic capacity during life history. This kind of pattern could decrease the effect of the reproductive costs as much as possible. In contrast to C. flavum and C. tibeticum, C. gutattum possessed a more economical and effective reproductive pattern which maybe related to its wider distribution.In conclusion, Paphiopedilum and Cypripedium have significantly different leaf traits which agree well with their habitats and there is a divergent and convergent evolution between the two genera. P. armeniacum is much tolerant and responsive to varying water and light availability but very sensitivity to the low temperature. Confronting the suddenly change of light environment, C. flavum can respond sensitively to the change of light in leaf construction but the plasticity of leaf photosynthetic characteristics which developed from its own habitat can hold for the next growing season. In contrast to C. flavum and C. tibeticum, C. gutattum possesses a more economical and effective reproductive pattern which maybe related to its wider distribution. The study of the relationship between the two genera, the response and tolerance to the environmental factors of the two genera are important for understanding the adaptation and evolution of the Cypripedioideae.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=dc.language.iso_filter%3A%E4%B8%AD%E6%96%87&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Physiology&order=desc&&fq=dc.project.title_filter%3APaphiopedilum%5C+and%5C+Cypripedium%EF%BC%8Cknown%5C+as%5C+slipper%5C+orchids%5C+in%5C+horticulture%2C%5C+belong%5C+to%5C+the%5C+subfamily%5C+Cypripedioideae%5C+of%5C+the%5C+Orchidaceae.%5C+Although%5C+they%5C+are%5C+closely%5C+related%5C+phylogenetically%2C%5C+there%5C+are%5C+significant%5C+differences%5C+in%5C+leaf%5C+traits%5C+and%5C+geographical%5C+distributions%5C+between%5C+two%5C+genera.%5C+This%5C+dissertation%5C+includes%5C+the%5C+following%5C+sections%5C%3A%5C+%5C%281%5C%29%5C+the%5C+leaf%5C+functional%5C+traits%5C+were%5C+compared%5C+in%5C+six%5C+species%5C+of%5C+the%5C+two%5C+genera%5C%3B%5C+%5C%282%5C%29%5C+the%5C+physiological%5C+responses%5C+of%5C+P.%5C+armeniacum%5C+to%5C+different%5C+water%5C+regimes%2C%5C+light%5C+regimes%5C+and%5C+low%5C+temperature%5C%3B%5C+%5C%283%5C%29%5C+the%5C+leaf%5C+phenotypic%5C+plastics%5C+of%5C+C.%5C+flavum%5C+in%5C+response%5C+to%5C+the%5C+different%5C+light%5C+condition%5C+and%5C+the%5C+photosynthetic%5C+characteristics%5C+of%5C+three%5C+Cypripedium%5C+species%5C+during%5C+sexual%5C+reproduction.%5C+The%5C+aims%5C+are%5C+to%5C+understand%5C+the%5C+convergent%5C+and%5C+divergent%5C+evolution%5C+between%5C+the%5C+two%5C+genera%5C+in%5C+leaf%5C+traits%5C+and%5C+their%5C+adaptive%5C+significances%2C%5C+and%5C+the%5C+leaf%5C+plastic%5C+responses%5C+to%5C+different%5C+levels%5C+of%5C+resources.%5C+Such%5C+information%5C+could%5C+provide%5C+scientific%5C+basis%5C+for%5C+conservation%5C+and%5C+domestication%5C+of%5C+Paphiopedilum%5C+and%5C+Cypripedium.%5C+The%5C+results%5C+are%5C+given%5C+below%5C%3A1.%5C+Compared%5C+with%5C+Paphiopedilum%2C%5C+Cypripedium%5C+showed%5C+significantly%5C+higher%5C+photosynthetic%5C+rate%5C+%5C%28Pmax%5C%29%2C%5C+leaf%5C+nitrogen%5C+content%5C+%5C%28Na%5C%29%2C%5C+photosynthetic%5C+nitrogen%5C+utilization%5C+%5C%28PNUE%5C%29%2C%5C+the%5C+fractions%5C+of%5C+leaf%5C+nitrogen%5C+partitioning%5C+in%5C+carboxylation%5C+%5C%28PC%5C%29%5C+and%5C+bioenergetics%5C+%5C%28PB%5C%29%2C%5C+specific%5C+leaf%5C+area%5C+%5C%28SLA%5C%29%2C%5C+ratio%5C+of%5C+leaf%5C+chlorophyll%5C+a%5C+and%5C+b%5C+%5C%28Chla%5C%2Fb%5C%29%2C%5C+but%5C+significantly%5C+lower%5C+leaf%5C+construction%5C+cost%5C+%5C%28CC%5C%29%5C+and%5C+the%5C+ratio%5C+of%5C+leaf%5C+carbon%5C+content%5C+to%5C+leaf%5C+nitrogen%5C+%5C%28C%5C%2FN%5C%29.%5C+These%5C+leaf%5C+traits%5C+of%5C+Cypripedium%5C+are%5C+considered%5C+as%5C+the%5C+adaptation%5C+to%5C+short%5C+growing%5C+period%5C+and%5C+rich%5C+soil%5C+nutrients%5C+in%5C+the%5C+alpine%5C+habitats.%5C+Conversely%2C%5C+the%5C+long%5C+life%5C+span%2C%5C+low%5C+Pmax%5C+and%5C+mesophyll%5C+conductance%5C+%5C%28gm%5C%29%5C+but%5C+high%5C+SLA%2C%5C+CC%5C+and%5C+C%5C%2FN%5C+in%5C+Paphiopedilum%5C+indicated%5C+that%5C+the%5C+adaptation%5C+to%5C+low%5C-light%2C%5C+limited%5C-nutrient%5C+habitat%5C+in%5C+the%5C+limestone%5C+area.%5C+As%5C+a%5C+sympatric%5C+species%5C+of%5C+Paphiopedilum%2C%5C+C.%5C+lentiginosum%5C+not%5C+only%5C+kept%5C+phylogenetically%5C+leaf%5C+traits%5C+of%5C+Cypripedium%2C%5C+suchas%5C+stomatal%5C+conductance%5C+%5C%28gs%5C%29%2C%5C+Pmax%2C%5C+PNUE%5C+and%5C+dormant%5C+in%5C+winter%2C%5C+but%5C+also%5C+possessed%5C+many%5C+leaf%5C+traits%5C+which%5C+is%5C+similar%5C+to%5C+that%5C+in%5C+Paphiopedilum%2C%5C+such%5C+as%5C+relative%5C+stomatal%5C+limitations%5C+%5C%28RSL%5C%29%2C%5C+gm%2C%5C+the%5C+ratio%5C+of%5C+leaf%5C+chlorophyll%5C+a%5C+and%5C+b%5C+%5C%28Chl%5C+a%5C%2Fb%5C%29%2C%5C+fraction%5C+of%5C+leaf%5C+nitrogen%5C+allocated%5C+to%5C+light%5C-harvesting%5C+components%5C+%5C%28PL%5C%29.%5C+These%5C+results%5C+indicated%5C+the%5C+convergent%5C+and%5C+divergent%5C+evolution%5C+of%5C+Paphiopedilum%5C+and%5C+Cypripedium%5C+in%5C+leaf%5C+traits.2.%5C+Paphiopedilum.%5C+armeniacum%5C+exhibited%5C+a%5C+high%5C+plasticity%5C+of%5C+leaf%5C+photosynthetic%5C+function%5C+in%5C+response%5C+to%5C+different%5C+light%5C+regimes%2C%5C+but%5C+the%5C+responses%5C+changes%5C+with%5C+the%5C+time.%5C+Due%5C+to%5C+grow%5C+under%5C+low%5C+light%5C+habitat%2C%5C+P.%5C+armeniacum%5C+grown%5C+under%5C+50%25%5C+shade%5C+%5C%28HL%5C%29%5C+had%5C+the%5C+significantly%5C+lowest%5C+Pmax%5C+than%5C+the%5C+plants%5C+grown%5C+under%5C+75%25%5C+shade%5C+%5C%28ML%5C%29%5C+and%5C+95%25%5C+shade%5C+%5C%28LL%5C%29%5C+after%5C+six%5C+months.%5C+However%2C%5C+after%5C+twelve%5C+months%2C%5C+the%5C+Pmax%5C+of%5C+the%5C+plants%5C+grown%5C+under%5C+HL%5C+increased%5C+significantly%5C+and%5C+then%5C+became%5C+the%5C+highest%5C+one%5C+among%5C+three%5C+levels%5C+of%5C+light.%5C+It%5C+is%5C+also%5C+found%5C+that%5C+leaf%5C+dry%5C+mass%5C+per%5C+unit%5C+area%5C+%5C%28LMA%5C%29%2C%5C+leaf%5C+stomatal%5C+conductance%5C+%5C%28gS%5C%29%2C%5C+internal%5C+mesophyll%5C+conductance%5C+%5C%28gm%5C%29%2C%5C+the%5C+fraction%5C+of%5C+leaf%5C+nitrogen%5C+partitioning%5C+in%5C+photosynthetic%5C+carboxylation%5C+%5C%28PC%5C%29%2C%5C+bioeneretics%5C+%5C%28PB%5C%29%5C+were%5C+greatly%5C+influenced%5C+by%5C+irradiance.%5C+The%5C+plants%5C+grown%5C+under%5C+HL%5C+increased%5C+gS%2C%5C+gm%2C%5C+PC%2C%5C+PB%5C+to%5C+increase%5C+Pmax.%5C+In%5C+addition%2C%5C+the%5C+plants%5C+grown%5C+under%5C+HL%5C+had%5C+the%5C+highest%5C+ratio%5C+of%5C+total%5C+chlorophyll%5C+content%5C+to%5C+total%5C+Carotenoid%5C+content%5C+%5C%28Car%5C%2FChl%5C%29%5C+while%5C+the%5C+plants%5C+grown%5C+under%5C+LL%5C+had%5C+the%5C+lowest%5C+ratio%5C+of%5C+leaf%5C+chlorophyll%5C+a%5C+and%5C+b%5C+%5C%28Chl%5C+a%5C%2Fb%5C%29.%5C+As%5C+a%5C+result%2C%5C+plasticity%5C+of%5C+leaf%5C+photosynthetic%5C+physiology%5C+of%5C+P.%5C+armeniacum%5C+in%5C+response%5C+to%5C+different%5C+light%5C+regimes%5C+depended%5C+largely%5C+on%5C+leaf%5C+nitrogen%5C+partitioning%5C+and%5C+leaf%5C+structure.%5C+As%5C+for%5C+the%5C+numbers%5C+of%5C+flowering%5C+and%5C+fruiting%2C%5C+ML%5C+was%5C+the%5C+best%5C+light%5C+level.3.%5C+The%5C+responses%5C+of%5C+P.%5C+armeniacum%5C+to%5C+different%5C+water%5C+regimes%5C+were%5C+not%5C+significantly%5C+different.%5C+But%5C+the%5C+Pmax%5C+and%5C+the%5C+maximum%5C+photochemical%5C+efficiency%5C+of%5C+PS%E2%85%A1%5C+%5C%28Fv%5C%2FFm%5C%29%5C+decreased%5C+with%5C+the%5C+increased%5C+frequency%5C+of%5C+watering.%5C+The%5C+reasons%5C+were%5C+that%5C+the%5C+plants%5C+have%5C+high%5C+respiration%5C+rate%5C+%5C%28Rd%5C%29%5C+and%5C+make%5C+more%5C+use%5C+of%5C+light%5C+energy%5C+to%5C+oxidation%5C+cycle.%5C+The%5C+plants%5C+watered%5C+every%5C+eight%5C+days%5C+%5C%28MW%5C%29%5C+and%5C+every%5C+twenty%5C+days%5C+%5C%28LW%5C%29%5C+had%5C+higher%5C+Pmax%5C+than%5C+the%5C+plant%5C+watered%5C+every%5C+four%5C+days%5C+%5C%28HW%5C%29%5C+mainly%5C+because%5C+of%5C+the%5C+higher%5C+PC%5C+and%5C+PB.%5C+Besides%2C%5C+the%5C+leaves%5C+of%5C+P.%5C+armeniacum%5C+had%5C+excellent%5C+property%5C+for%5C+holding%5C+water%5C+also%5C+contributed%5C+to%5C+the%5C+high%5C+photosynthetic%5C+capacity.4.%5C+Paphiopedilum.%5C+armeniacum%5C+was%5C+very%5C+sensitive%5C+to%5C+the%5C+low%5C+temperature.%5C+The%5C+plants%5C+significantly%5C+decreased%5C+photosynthetic%5C+capacity%5C+after%5C+grown%5C+under%5C+4%E2%84%83%5C+for%5C+three%5C+days%5C+and%5C+the%5C+photosynthetic%5C+machinery%5C+was%5C+destroyed%5C+after%5C+fifteen%5C+days.%5C+The%5C+photosynthetic%5C+capacity%5C+of%5C+P.%5C+armeniacum%5C+exhibited%5C+no%5C+change%5C+at%5C+10%E2%84%83%5C+and%5C+15%E2%84%83.5.%5C+Cypripedium%5C+flavum%5C+of%5C+four%5C+habitats%5C+%5C%28DB%2C%5C+XRD%2C%5C+XZD%5C+and%5C+TSQ%5C%29%5C+with%5C+different%5C+light%5C+intensity%5C+exhibited%5C+different%5C+photosynthetic%5C+characteristics%5C+after%5C+transplanted%5C+to%5C+the%5C+same%5C+environment%5C+in%5C+Kunming.%5C+Among%5C+the%5C+habitats%2C%5C+the%5C+light%5C+intensity%5C+of%5C+DB%5C+was%5C+the%5C+highest%5C+while%5C+XRD%5C+was%5C+the%5C+lowest.%5C+The%5C+light%5C+intensity%5C+of%5C+XZD%5C+and%5C+TSQ%5C+were%5C+not%5C+significantly%5C+difference.%5C+Among%5C+all%5C+the%5C+plants%5C+in%5C+Kunming%2C%5C+the%5C+plants%5C+of%5C+DB%5C+had%5C+the%5C+significantly%5C+highest%5C+Pmax%5C+but%5C+the%5C+plants%5C+of%5C+XRD%5C+had%5C+the%5C+lowest%5C+Pmax.%5C+The%5C+light%5C+saturation%5C+point%5C+%5C%28LSP%5C%29%5C+and%5C+photosynthetic%5C+nitrogen%5C+use%5C+efficiency%5C+%5C%28PNUE%5C%29%5C+agreed%5C+well%5C+with%5C+the%5C+light%5C+intensity%5C+of%5C+four%5C+habitats%5C+and%5C+contributed%5C+to%5C+the%5C+high%5C+Pmax%5C+of%5C+DB.%5C+The%5C+LMA%2C%5C+Chl%5C+and%5C+leaf%5C+nitrogen%5C+content%5C+were%5C+not%5C+different%5C+among%5C+all%5C+the%5C+plants.%5C+C.%5C+flavum%5C+exhibited%5C+sensitively%5C+response%5C+to%5C+the%5C+change%5C+of%5C+light%5C+in%5C+leaf%5C+construction%5C+while%5C+kept%5C+the%5C+plasticity%5C+of%5C+leaf%5C+photosynthetic%5C+characteristics%5C+which%5C+developed%5C+from%5C+its%5C+own%5C+habitat.6.%5C+The%5C+photosynthetic%5C+capacity%5C+of%5C+C.%5C+tibeticum%5C+and%5C+C.%5C+flavum%5C+were%5C+significantly%5C+increased%5C+at%5C+the%5C+flowering%5C+stage.%5C+For%5C+these%5C+two%5C+species%2C%5C+the%5C+significantly%5C+increased%5C+Amax%5C+were%5C+closely%5C+related%5C+to%5C+the%5C+maximum%5C+carboxylation%5C+rate%5C+by%5C+ribulose%5C-1%2C%5C+5%5C-bisphosphate%5C+carboxylase%5C%2Foxygenase%5C+%5C%28Vcmax%5C%29%2C%5C+photon%5C+saturated%5C+rate%5C+of%5C+electron%5C+transport%5C+%5C%28Jmax%5C%29%2C%5C+the%5C+rate%5C+of%5C+triose%5C+phosphate%5C+utilization%5C+%5C%28TPU%5C%29%5C+and%5C+actual%5C+quantum%5C+efficiency%5C+of%5C+the%5C+photosystem%5C+II%5C+photochemistry%5C+%5C%28%CE%A6PSII%5C%29%5C+respectively.%5C+However%2C%5C+flowering%5C+almost%5C+did%5C+not%5C+affect%5C+the%5C+photosynthetic%5C+capacity%5C+of%5C+C.%5C+guttatum.%5C+C.%5C+guttatum%5C+had%5C+the%5C+smallest%5C+plant%5C+size%2C%5C+the%5C+leaf%5C+area%2C%5C+the%5C+volume%5C+of%5C+labellum%5C+and%5C+the%5C+volume%5C+of%5C+fruit%2C%5C+but%5C+the%5C+biggest%5C+fruit%5C+volume%5C+per%5C+leaf%5C+area%5C+among%5C+three%5C+species.%5C+These%5C+results%5C+indicated%5C+that%5C+for%5C+C.%5C+flavum%5C+and%5C+C.%5C+tibeticum%5C+there%5C+were%5C+a%5C+physiological%5C+mechanism%5C+in%5C+photosynthesis%5C+to%5C+compensate%5C+the%5C+cost%5C+of%5C+flowering%5C+as%5C+well%5C+as%5C+increased%5C+resource%5C+acquisitions%2C%5C+which%5C+would%5C+be%5C+beneficial%5C+to%5C+the%5C+survival%5C+or%5C+future%5C+flowering%5C+of%5C+the%5C+plant.%5C+C.%5C+gutattum%5C+could%5C+keep%5C+a%5C+steady%5C+photosynthetic%5C+capacity%5C+during%5C+life%5C+history.%5C+This%5C+kind%5C+of%5C+pattern%5C+could%5C+decrease%5C+the%5C+effect%5C+of%5C+the%5C+reproductive%5C+costs%5C+as%5C+much%5C+as%5C+possible.%5C+In%5C+contrast%5C+to%5C+C.%5C+flavum%5C+and%5C+C.%5C+tibeticum%2C%5C+C.%5C+gutattum%5C+possessed%5C+a%5C+more%5C+economical%5C+and%5C+effective%5C+reproductive%5C+pattern%5C+which%5C+maybe%5C+related%5C+to%5C+its%5C+wider%5C+distribution.In%5C+conclusion%2C%5C+Paphiopedilum%5C+and%5C+Cypripedium%5C+have%5C+significantly%5C+different%5C+leaf%5C+traits%5C+which%5C+agree%5C+well%5C+with%5C+their%5C+habitats%5C+and%5C+there%5C+is%5C+a%5C+divergent%5C+and%5C+convergent%5C+evolution%5C+between%5C+the%5C+two%5C+genera.%5C+P.%5C+armeniacum%5C+is%5C+much%5C+tolerant%5C+and%5C+responsive%5C+to%5C+varying%5C+water%5C+and%5C+light%5C+availability%5C+but%5C+very%5C+sensitivity%5C+to%5C+the%5C+low%5C+temperature.%5C+Confronting%5C+the%5C+suddenly%5C+change%5C+of%5C+light%5C+environment%2C%5C+C.%5C+flavum%5C+can%5C+respond%5C+sensitively%5C+to%5C+the%5C+change%5C+of%5C+light%5C+in%5C+leaf%5C+construction%5C+but%5C+the%5C+plasticity%5C+of%5C+leaf%5C+photosynthetic%5C+characteristics%5C+which%5C+developed%5C+from%5C+its%5C+own%5C+habitat%5C+can%5C+hold%5C+for%5C+the%5C+next%5C+growing%5C+season.%5C+In%5C+contrast%5C+to%5C+C.%5C+flavum%5C+and%5C+C.%5C+tibeticum%2C%5C+C.%5C+gutattum%5C+possesses%5C+a%5C+more%5C+economical%5C+and%5C+effective%5C+reproductive%5C+pattern%5C+which%5C+maybe%5C+related%5C+to%5C+its%5C+wider%5C+distribution.%5C+The%5C+study%5C+of%5C+the%5C+relationship%5C+between%5C+the%5C+two%5C+genera%2C%5C+the%5C+response%5C+and%5C+tolerance%5C+to%5C+the%5C+environmental%5C+factors%5C+of%5C+the%5C+two%5C+genera%5C+are%5C+important%5C+for%5C+understanding%5C+the%5C+adaptation%5C+and%5C+evolution%5C+of%5C+the%5C+Cypripedioideae."},{"jsname":"Plant secondary metabolites are a class of small molecular compounds which are not necessary for plant growth and development in nature. They have many types and different functions. The current studies about these compounds were often focused on the chemistry, pharmacology and drug development. Research about their biological effects is few. Exploration the biological effects of plant secondary metabolites is important to study their biological function and application. Scutellarin is an active pharmaceutical ingredient extracted from Erigeron breviscapus(vant) Hand Mass. It is an important plant secondary metabolite, belonging to flavonoid. Previous studies found that some flavonoids such as quercetin, naringenin were auxin transport inhibitors in plants and they were related to plant growth and development closely. As an important flavonoid, scutellarin also plays an important role in plant growth and development is unknown. In this paper, scutellarin was selected as research object. Through a series of plant physiological, biochemical and molecular techniques to explore the biological effects of scutellarin on Arabidopsis thaliana, we get the results as follows: Scutellarin had a hormone-like effect on Arabidopsis thaliana. It promoted root elongation at low concentration obviously; however the effect disappeared at high concentration. We made a further study about it and found that scutellarin had antagonism with methyl jasmonate and 2,4-dichlorophenoxy acetic acid (2,4-D) in root elongation. It also had an influence on nitrogen metabolism. Microarray results showed that the biological effects of scutellarin had a complex relationship with plant hormone and nitrogen metabolism. These were consistent with our experimental phenomenas. All these manifested that scutellarin played an important role in plant growth and development as a similar plant hormone. We tried the experiment using some other flavonoids. It was found that not all the flavonoids had the same obvious effects on root elongation like scutellarin; the biological effects of them were closely related to their chemical structures. In addition, the other two aspects of research were also carried out in the paper. One was exploring the role of phospholipase Dδ (PLDδ) under ultraviolet radiation in Arabidopsis. Our evidences suggested knockout PLDδ intensified membrane damage induced by UV radiation. The other one was lipid data collection and calculation of acyl chain lengths of lipid molecules in Arabidopsis under senescence induced by various stresses. We showed that the acyl chains of phosphoserine (PS, a head-group class of membrane glycerolipids with very long chains of fatty acids.) lengthened with the development and senescence in Arabidopsis. In contrast, the acyl chain lengths of other major head-group classes of membrane glycerolipids subtly fluctuated.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=dc.language.iso_filter%3A%E4%B8%AD%E6%96%87&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Physiology&order=desc&&fq=dc.project.title_filter%3APlant%5C+secondary%5C+metabolites%5C+are%5C+a%5C+class%5C+of%5C+small%5C+molecular%5C+compounds%5C+which%5C+are%5C+not%5C+necessary%5C+for%5C+plant%5C+growth%5C+and%5C+development%5C+in%5C+nature.%5C+They%5C+have%5C+many%5C+types%5C+and%5C+different%5C+functions.%5C+The%5C+current%5C+studies%5C+about%5C+these%5C+compounds%5C+were%5C+often%5C+focused%5C+on%5C+the%5C+chemistry%2C%5C+pharmacology%5C+and%5C+drug%5C+development.%5C+Research%5C+about%5C+their%5C+biological%5C+effects%5C+is%5C+few.%5C+Exploration%5C+the%5C+biological%5C+effects%5C+of%5C+plant%5C+secondary%5C+metabolites%5C+is%5C+important%5C+to%5C+study%5C+their%5C+biological%5C+function%5C+and%5C+application.%5C+Scutellarin%5C+is%5C+an%5C+active%5C+pharmaceutical%5C+ingredient%5C+extracted%5C+from%5C+Erigeron%5C+breviscapus%5C%28vant%5C%29%5C+Hand%5C+Mass.%5C+It%5C+is%5C+an%5C+important%5C+plant%5C+secondary%5C+metabolite%2C%5C+belonging%5C+to%5C+flavonoid.%5C+Previous%5C+studies%5C+found%5C+that%5C+some%5C+flavonoids%5C+such%5C+as%5C+quercetin%2C%5C+naringenin%5C+were%5C+auxin%5C+transport%5C+inhibitors%5C+in%5C+plants%5C+and%5C+they%5C+were%5C+related%5C+to%5C+plant%5C+growth%5C+and%5C+development%5C+closely.%5C+As%5C+an%5C+important%5C+flavonoid%2C%5C+scutellarin%5C+also%5C+plays%5C+an%5C+important%5C+role%5C+in%5C+plant%5C+growth%5C+and%5C+development%5C+is%5C+unknown.%5C+In%5C+this%5C+paper%2C%5C+scutellarin%5C+was%5C+selected%5C+as%5C+research%5C+object.%5C+Through%5C+a%5C+series%5C+of%5C+plant%5C+physiological%2C%5C+biochemical%5C+and%5C+molecular%5C+techniques%5C+to%5C+explore%5C+the%5C+biological%5C+effects%5C+of%5C+scutellarin%5C+on%5C+Arabidopsis%5C+thaliana%2C%5C+we%5C+get%5C+the%5C+results%5C+as%5C+follows%5C%3A%5C+Scutellarin%5C+had%5C+a%5C+hormone%5C-like%5C+effect%5C+on%5C+Arabidopsis%5C+thaliana.%5C+It%5C+promoted%5C+root%5C+elongation%5C+at%5C+low%5C+concentration%5C+obviously%5C%3B%5C+however%5C+the%5C+effect%5C+disappeared%5C+at%5C+high%5C+concentration.%5C+We%5C+made%5C+a%5C+further%5C+study%5C+about%5C+it%5C+and%5C+found%5C+that%5C+scutellarin%5C+had%5C+antagonism%5C+with%5C+methyl%5C+jasmonate%5C+and%5C+2%2C4%5C-dichlorophenoxy%5C+acetic%5C+acid%5C+%5C%282%2C4%5C-D%5C%29%5C+in%5C+root%5C+elongation.%5C+It%5C+also%5C+had%5C+an%5C+influence%5C+on%5C+nitrogen%5C+metabolism.%5C+Microarray%5C+results%5C+showed%5C+that%5C+the%5C+biological%5C+effects%5C+of%5C+scutellarin%5C+had%5C+a%5C+complex%5C+relationship%5C+with%5C+plant%5C+hormone%5C+and%5C+nitrogen%5C+metabolism.%5C+These%5C+were%5C+consistent%5C+with%5C+our%5C+experimental%5C+phenomenas.%5C+All%5C+these%5C+manifested%5C+that%5C+scutellarin%5C+played%5C+an%5C+important%5C+role%5C+in%5C+plant%5C+growth%5C+and%5C+development%5C+as%5C+a%5C+similar%5C+plant%5C+hormone.%5C+We%5C+tried%5C+the%5C+experiment%5C+using%5C+some%5C+other%5C+flavonoids.%5C+It%5C+was%5C+found%5C+that%5C+not%5C+all%5C+the%5C+flavonoids%5C+had%5C+the%5C+same%5C+obvious%5C+effects%5C+on%5C+root%5C+elongation%5C+like%5C+scutellarin%5C%3B%5C+the%5C+biological%5C+effects%5C+of%5C+them%5C+were%5C+closely%5C+related%5C+to%5C+their%5C+chemical%5C+structures.%5C+In%5C+addition%2C%5C+the%5C+other%5C+two%5C+aspects%5C+of%5C+research%5C+were%5C+also%5C+carried%5C+out%5C+in%5C+the%5C+paper.%5C+One%5C+was%5C+exploring%5C+the%5C+role%5C+of%5C+phospholipase%5C+D%CE%B4%5C+%5C%28PLD%CE%B4%5C%29%5C+under%5C+ultraviolet%5C+radiation%5C+in%5C+Arabidopsis.%5C+Our%5C+evidences%5C+suggested%5C+knockout%5C+PLD%CE%B4%5C+intensified%5C+membrane%5C+damage%5C+induced%5C+by%5C+UV%5C+radiation.%5C+The%5C+other%5C+one%5C+was%5C+lipid%5C+data%5C+collection%5C+and%5C+calculation%5C+of%5C+acyl%5C+chain%5C+lengths%5C+of%5C+lipid%5C+molecules%5C+in%5C+Arabidopsis%5C+under%5C+senescence%5C+induced%5C+by%5C+various%5C+stresses.%5C+We%5C+showed%5C+that%5C+the%5C+acyl%5C+chains%5C+of%5C+phosphoserine%5C+%5C%28PS%2C%5C+a%5C+head%5C-group%5C+class%5C+of%5C+membrane%5C+glycerolipids%5C+with%5C+very%5C+long%5C+chains%5C+of%5C+fatty%5C+acids.%5C%29%5C+lengthened%5C+with%5C+the%5C+development%5C+and%5C+senescence%5C+in%5C+Arabidopsis.%5C+In%5C+contrast%2C%5C+the%5C+acyl%5C+chain%5C+lengths%5C+of%5C+other%5C+major%5C+head%5C-group%5C+classes%5C+of%5C+membrane%5C+glycerolipids%5C+subtly%5C+fluctuated."},{"jsname":"Plants respond to unpredictable alpine environments by a high degree of specialization in the structural and functional aspects of their flowers and pollination. However, few original data about the reproductive biology of these plants has been documented, particularly in the species-rich Himalaya-Hengduan Mountain regions. Incarvillea Juss. is notable for being a temperate and herbaceous member in the primarily tropical and woody family Bignoniaceae. Most species of the genus occur in alpine areas of the Himalaya-Hengduan Mountain regions. We investigated the reproductive biology of two alpine species, I. mairei and I. lutea. Incarvillea mairei was highly self-compatible, but depended on pollinators for seed production. The main pollinators were Halictus sp and Apis sp. at low altitude, and bumblebee at high altitude. Seed production was severely limited by pollinators, as indicated by supplemental hand-pollination experiments. The extended floral longevity and stigma receptivity greatly compensated for pollinator limitation. Outcrossing rates were high from 0.834 to 0.988 with altitude and cumulative inbreeding depression was 0.088, indicating a predominant outcrossing mating system. The combination of floral traits (approach herkogamy, sensitive stigma, anther appendages) and pollinator activities ensure a remarkably efficient pollination mechanism, as well as make it possible to ensure reproduction success in alpine habitats. Incarvillea lutea is self-compatible, but depends on insects for seed production. Both the fruit and seed set were high under natural conditions. The main pollinator is Halictus sp. The larger floral displays of I. lutea received more visitations, but facilitated geitonogamous pollination simultaneously. The cumulative inbreeding depression was 0.373. The corolla tube changed color with age from yellow to red. Young yellow flowers had a significant greater pollen and nectar reward. The co-occurrence of the change in amount of reward and flower color enabled I. lutea to direct pollinators to visit reproductive, highly rewarding yellow flowers. We suggest floral color change in I. lutea may serve as a mechanism for reducing geitonogamous pollination and increasing the efficiency of pollen transfer to enhance plant fitness.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=dc.language.iso_filter%3A%E4%B8%AD%E6%96%87&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Physiology&order=desc&&fq=dc.project.title_filter%3APlants%5C+respond%5C+to%5C+unpredictable%5C+alpine%5C+environments%5C+by%5C+a%5C+high%5C+degree%5C+of%5C+specialization%5C+in%5C+the%5C+structural%5C+and%5C+functional%5C+aspects%5C+of%5C+their%5C+flowers%5C+and%5C+pollination.%5C+However%2C%5C+few%5C+original%5C+data%5C+about%5C+the%5C+reproductive%5C+biology%5C+of%5C+these%5C+plants%5C+has%5C+been%5C+documented%2C%5C+particularly%5C+in%5C+the%5C+species%5C-rich%5C+Himalaya%5C-Hengduan%5C+Mountain%5C+regions.%5C+Incarvillea%5C+Juss.%5C+is%5C+notable%5C+for%5C+being%5C+a%5C+temperate%5C+and%5C+herbaceous%5C+member%5C+in%5C+the%5C+primarily%5C+tropical%5C+and%5C+woody%5C+family%5C+Bignoniaceae.%5C+Most%5C+species%5C+of%5C+the%5C+genus%5C+occur%5C+in%5C+alpine%5C+areas%5C+of%5C+the%5C+Himalaya%5C-Hengduan%5C+Mountain%5C+regions.%5C+We%5C+investigated%5C+the%5C+reproductive%5C+biology%5C+of%5C+two%5C+alpine%5C+species%2C%5C+I.%5C+mairei%5C+and%5C+I.%5C+lutea.%5C+Incarvillea%5C+mairei%5C+was%5C+highly%5C+self%5C-compatible%2C%5C+but%5C+depended%5C+on%5C+pollinators%5C+for%5C+seed%5C+production.%5C+The%5C+main%5C+pollinators%5C+were%5C+Halictus%5C+sp%5C+and%5C+Apis%5C+sp.%5C+at%5C+low%5C+altitude%2C%5C+and%5C+bumblebee%5C+at%5C+high%5C+altitude.%5C+Seed%5C+production%5C+was%5C+severely%5C+limited%5C+by%5C+pollinators%2C%5C+as%5C+indicated%5C+by%5C+supplemental%5C+hand%5C-pollination%5C+experiments.%5C+The%5C+extended%5C+floral%5C+longevity%5C+and%5C+stigma%5C+receptivity%5C+greatly%5C+compensated%5C+for%5C+pollinator%5C+limitation.%5C+Outcrossing%5C+rates%5C+were%5C+high%5C+from%5C+0.834%5C+to%5C+0.988%5C+with%5C+altitude%5C+and%5C+cumulative%5C+inbreeding%5C+depression%5C+was%5C+0.088%2C%5C+indicating%5C+a%5C+predominant%5C+outcrossing%5C+mating%5C+system.%5C+The%5C+combination%5C+of%5C+floral%5C+traits%5C+%5C%28approach%5C+herkogamy%2C%5C+sensitive%5C+stigma%2C%5C+anther%5C+appendages%5C%29%5C+and%5C+pollinator%5C+activities%5C+ensure%5C+a%5C+remarkably%5C+efficient%5C+pollination%5C+mechanism%2C%5C+as%5C+well%5C+as%5C+make%5C+it%5C+possible%5C+to%5C+ensure%5C+reproduction%5C+success%5C+in%5C+alpine%5C+habitats.%5C+Incarvillea%5C+lutea%5C+is%5C+self%5C-compatible%2C%5C+but%5C+depends%5C+on%5C+insects%5C+for%5C+seed%5C+production.%5C+Both%5C+the%5C+fruit%5C+and%5C+seed%5C+set%5C+were%5C+high%5C+under%5C+natural%5C+conditions.%5C+The%5C+main%5C+pollinator%5C+is%5C+Halictus%5C+sp.%5C+The%5C+larger%5C+floral%5C+displays%5C+of%5C+I.%5C+lutea%5C+received%5C+more%5C+visitations%2C%5C+but%5C+facilitated%5C+geitonogamous%5C+pollination%5C+simultaneously.%5C+The%5C+cumulative%5C+inbreeding%5C+depression%5C+was%5C+0.373.%5C+The%5C+corolla%5C+tube%5C+changed%5C+color%5C+with%5C+age%5C+from%5C+yellow%5C+to%5C+red.%5C+Young%5C+yellow%5C+flowers%5C+had%5C+a%5C+significant%5C+greater%5C+pollen%5C+and%5C+nectar%5C+reward.%5C+The%5C+co%5C-occurrence%5C+of%5C+the%5C+change%5C+in%5C+amount%5C+of%5C+reward%5C+and%5C+flower%5C+color%5C+enabled%5C+I.%5C+lutea%5C+to%5C+direct%5C+pollinators%5C+to%5C+visit%5C+reproductive%2C%5C+highly%5C+rewarding%5C+yellow%5C+flowers.%5C+We%5C+suggest%5C+floral%5C+color%5C+change%5C+in%5C+I.%5C+lutea%5C+may%5C+serve%5C+as%5C+a%5C+mechanism%5C+for%5C+reducing%5C+geitonogamous%5C+pollination%5C+and%5C+increasing%5C+the%5C+efficiency%5C+of%5C+pollen%5C+transfer%5C+to%5C+enhance%5C+plant%5C+fitness."},{"jsname":"Polyploidy, the presence of three or more genomes in an organism, has occurred extensively in plants, and plays a major role in the evolution and speciation of angiosperm. Despite extensive study of the cytotypes distribution and origin of polyploidy, few studies have been reported in China, especially in southwest region. Allium wallichii Kunth (Alliaceae) is a perennial herb, distributed in southwest China, northen India, Nepal, Sikkim and Bhutan. The multiple ploidy levels and rapid differentiation has made A. wallichii a good candidate for studying polyploidy. The cytotypes distribution and origin of A. wallichii polyploidy has been studied in Yunnan-Guizhou Plateu, a main distribution area of this plant. Root-tip squashes were used to identify the ploidy level and karyotypes of 412 plants from 17 populations sampled from Yunnan-Guizhou Plateau. Based on nuclear ITS DNA sequences in 83 individuals from 17 populations, phylogentic analysis were performed to investigate types of A. wallichii polyloids, and determine if the reproductive isolation has been established between diploids and tetraploids. Based on two chloroplast DNA (cpDNA) fragments (petL-psbE, trnQ-rps16), haplotypes were identified , and the origination of tetraploids were analyzed. The main results and conclusions are as follows: 1. Distribution of cytotypes, Cytotype distribution was analyzed based on 412 newly studied plants from seventeen populations and published literatures. Nine diploid populations, six diploid-tetraploid mixed populations occur in central to northwest Yunnan, while twelve tetraploid populations occur in the Yunnan-Guizhou Plateau. Furthermore, tetraploids has a wider altitude range (1400-3726 m) than diploids (2100-3638 m), which suggests the adaptative ability of tetraploid is much stronger than its diploid pregnancies. Tetraploid populations distributed in northwest Yunnan have much lower karyotype asymmetry with the asymmetry indexes (AI) ranges from 1.83 to 2.87 compared to other populations of other areas (AI, 2.03-3.02). This suggests tetraploid in northwest Yunnan is likely to have an earlier derivation. 2. Autoploidization origin of the tetraploids, Diploids are all 2A type except that Zhongdian D and Baoshan populations are 3A type, and tetraploids are all 2A type but Huize and Hezhang populations are 2B type. It shows high similarity of karyotypes of diploid and tetraploids. In addition, the undistinguishable morphology of A. wallichii with different ploidy levels in northwest Yunnan and the monophyly of A. wallichii in ITS strict consensus tree all suggest autopolyploid origins of tetraploids A. wallichii. 3. Multiple origins of tetraploids, Based on two cpDNA fragments (petL-psbE, trnQ-rps16) in 85 individuals from 17 populations across the Yunnan-Guizhou Plateau, a total of 17 haplotypes were identified, among them, 3 in diploids only, 11 in tetraploids only, and 3 found in both cytotypes. This, plus network analyses, indicated that tetraploids have arisen independently from diploids at least three times. 4. Productive isolation between diploids and teraploids, ITS phylogenetic analyses between diploid and tetraploid A. wallichii shows that diploids and tetraploids are both monophyly, with bootstrap value 100% and 88% respectively, indicating that the reproductive isolation has been established between them. Based on cpDNA haplotypes and ITS variation types analyses, extensive hybridization and gene introgression may have occurred among tetraploids.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&fq=dc.language.iso_filter%3A%E4%B8%AD%E6%96%87&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Physiology&order=desc&&fq=dc.project.title_filter%3APolyploidy%2C%5C+the%5C+presence%5C+of%5C+three%5C+or%5C+more%5C+genomes%5C+in%5C+an%5C+organism%2C%5C+has%5C+occurred%5C+extensively%5C+in%5C+plants%2C%5C+and%5C+plays%5C+a%5C+major%5C+role%5C+in%5C+the%5C+evolution%5C+and%5C+speciation%5C+of%5C+angiosperm.%5C+Despite%5C+extensive%5C+study%5C+of%5C+the%5C+cytotypes%5C+distribution%5C+and%5C+origin%5C+of%5C+polyploidy%2C%5C+few%5C+studies%5C+have%5C+been%5C+reported%5C+in%5C+China%2C%5C+especially%5C+in%5C+southwest%5C+region.%5C+Allium%5C+wallichii%5C+Kunth%5C+%5C%28Alliaceae%5C%29%5C+is%5C+a%5C+perennial%5C+herb%2C%5C+distributed%5C+in%5C+southwest%5C+China%2C%5C+northen%5C+India%2C%5C+Nepal%2C%5C+Sikkim%5C+and%5C+Bhutan.%5C+The%5C+multiple%5C+ploidy%5C+levels%5C+and%5C+rapid%5C+differentiation%5C+has%5C+made%5C+A.%5C+wallichii%5C+a%5C+good%5C+candidate%5C+for%5C+studying%5C+polyploidy.%5C+The%5C+cytotypes%5C+distribution%5C+and%5C+origin%5C+of%5C+A.%5C+wallichii%5C+polyploidy%5C+has%5C+been%5C+studied%5C+in%5C+Yunnan%5C-Guizhou%5C+Plateu%2C%5C+a%5C+main%5C+distribution%5C+area%5C+of%5C+this%5C+plant.%5C+Root%5C-tip%5C+squashes%5C+were%5C+used%5C+to%5C+identify%5C+the%5C+ploidy%5C+level%5C+and%5C+karyotypes%5C+of%5C+412%5C+plants%5C+from%5C+17%5C+populations%5C+sampled%5C+from%5C+Yunnan%5C-Guizhou%5C+Plateau.%5C+Based%5C+on%5C+nuclear%5C+ITS%5C+DNA%5C+sequences%5C+in%5C+83%5C+individuals%5C+from%5C+17%5C+populations%2C%5C+phylogentic%5C+analysis%5C+were%5C+performed%5C+to%5C+investigate%5C+types%5C+of%5C+A.%5C+wallichii%5C+polyloids%2C%5C+and%5C+determine%5C+if%5C+the%5C+reproductive%5C+isolation%5C+has%5C+been%5C+established%5C+between%5C+diploids%5C+and%5C+tetraploids.%5C+Based%5C+on%5C+two%5C+chloroplast%5C+DNA%5C+%5C%28cpDNA%5C%29%5C+fragments%5C+%5C%28petL%5C-psbE%2C%5C+trnQ%5C-rps16%5C%29%2C%5C+haplotypes%5C+were%5C+identified%5C+%2C%5C+and%5C+the%5C+origination%5C+of%5C+tetraploids%5C+were%5C+analyzed.%5C+The%5C+main%5C+results%5C+and%5C+conclusions%5C+are%5C+as%5C+follows%5C%3A%5C+1.%5C+Distribution%5C+of%5C+cytotypes%2C%5C+Cytotype%5C+distribution%5C+was%5C+analyzed%5C+based%5C+on%5C+412%5C+newly%5C+studied%5C+plants%5C+from%5C+seventeen%5C+populations%5C+and%5C+published%5C+literatures.%5C+Nine%5C+diploid%5C+populations%2C%5C+six%5C+diploid%5C-tetraploid%5C+mixed%5C+populations%5C+occur%5C+in%5C+central%5C+to%5C+northwest%5C+Yunnan%2C%5C+while%5C+twelve%5C+tetraploid%5C+populations%5C+occur%5C+in%5C+the%5C+Yunnan%5C-Guizhou%5C+Plateau.%5C+Furthermore%2C%5C+tetraploids%5C+has%5C+a%5C+wider%5C+altitude%5C+range%5C+%5C%281400%5C-3726%5C+m%5C%29%5C+than%5C+diploids%5C+%5C%282100%5C-3638%5C+m%5C%29%2C%5C+which%5C+suggests%5C+the%5C+adaptative%5C+ability%5C+of%5C+tetraploid%5C+is%5C+much%5C+stronger%5C+than%5C+its%5C+diploid%5C+pregnancies.%5C+Tetraploid%5C+populations%5C+distributed%5C+in%5C+northwest%5C+Yunnan%5C+have%5C+much%5C+lower%5C+karyotype%5C+asymmetry%5C+with%5C+the%5C+asymmetry%5C+indexes%5C+%5C%28AI%5C%29%5C+ranges%5C+from%5C+1.83%5C+to%5C+2.87%5C+compared%5C+to%5C+other%5C+populations%5C+of%5C+other%5C+areas%5C+%5C%28AI%2C%5C+2.03%5C-3.02%5C%29.%5C+This%5C+suggests%5C+tetraploid%5C+in%5C+northwest%5C+Yunnan%5C+is%5C+likely%5C+to%5C+have%5C+an%5C+earlier%5C+derivation.%5C+2.%5C+Autoploidization%5C+origin%5C+of%5C+the%5C+tetraploids%2C%5C+Diploids%5C+are%5C+all%5C+2A%5C+type%5C+except%5C+that%5C+Zhongdian%5C+D%5C+and%5C+Baoshan%5C+populations%5C+are%5C+3A%5C+type%2C%5C+and%5C+tetraploids%5C+are%5C+all%5C+2A%5C+type%5C+but%5C+Huize%5C+and%5C+Hezhang%5C+populations%5C+are%5C+2B%5C+type.%5C+It%5C+shows%5C+high%5C+similarity%5C+of%5C+karyotypes%5C+of%5C+diploid%5C+and%5C+tetraploids.%5C+In%5C+addition%2C%5C+the%5C+undistinguishable%5C+morphology%5C+of%5C+A.%5C+wallichii%5C+with%5C+different%5C+ploidy%5C+levels%5C+in%5C+northwest%5C+Yunnan%5C+and%5C+the%5C+monophyly%5C+of%5C+A.%5C+wallichii%5C+in%5C+ITS%5C+strict%5C+consensus%5C+tree%5C+all%5C+suggest%5C+autopolyploid%5C+origins%5C+of%5C+tetraploids%5C+A.%5C+wallichii.%5C+3.%5C+Multiple%5C+origins%5C+of%5C+tetraploids%2C%5C+Based%5C+on%5C+two%5C+cpDNA%5C+fragments%5C+%5C%28petL%5C-psbE%2C%5C+trnQ%5C-rps16%5C%29%5C+in%5C+85%5C+individuals%5C+from%5C+17%5C+populations%5C+across%5C+the%5C+Yunnan%5C-Guizhou%5C+Plateau%2C%5C+a%5C+total%5C+of%5C+17%5C+haplotypes%5C+were%5C+identified%2C%5C+among%5C+them%2C%5C+3%5C+in%5C+diploids%5C+only%2C%5C+11%5C+in%5C+tetraploids%5C+only%2C%5C+and%5C+3%5C+found%5C+in%5C+both%5C+cytotypes.%5C+This%2C%5C+plus%5C+network%5C+analyses%2C%5C+indicated%5C+that%5C+tetraploids%5C+have%5C+arisen%5C+independently%5C+from%5C+diploids%5C+at%5C+least%5C+three%5C+times.%5C+4.%5C+Productive%5C+isolation%5C+between%5C+diploids%5C+and%5C+teraploids%2C%5C+ITS%5C+phylogenetic%5C+analyses%5C+between%5C+diploid%5C+and%5C+tetraploid%5C+A.%5C+wallichii%5C+shows%5C+that%5C+diploids%5C+and%5C+tetraploids%5C+are%5C+both%5C+monophyly%2C%5C+with%5C+bootstrap%5C+value%5C+100%25%5C+and%5C+88%25%5C+respectively%2C%5C+indicating%5C+that%5C+the%5C+reproductive%5C+isolation%5C+has%5C+been%5C+established%5C+between%5C+them.%5C+Based%5C+on%5C+cpDNA%5C+haplotypes%5C+and%5C+ITS%5C+variation%5C+types%5C+analyses%2C%5C+extensive%5C+hybridization%5C+and%5C+gene%5C+introgression%5C+may%5C+have%5C+occurred%5C+among%5C+tetraploids."},{"jsname":"lastIndexed","jscount":"2024-06-17"}],"资助项目","dc.project.title_filter")'>
1. Seed do... [1]
1ncarville... [1]
Aconitum L... [1]
Bambusoide... [1]
C. sinensi... [1]
Chemical i... [1]
更多...
收录类别
CSCD [72]
资助机构
国家重点基础研究发展... [2]
Fund of St... [1]
The Chines... [1]
The Major ... [1]
The Nation... [1]
中国科学院寒旱区陆面... [1]
更多...
×
知识图谱
KIB OpenIR
开始提交
已提交作品
待认领作品
已认领作品
未提交全文
收藏管理
QQ客服
官方微博
反馈留言
浏览/检索结果:
共352条，第1-10条
帮助
限定条件
语种：中文
已选(
0
)
清除
条数/页：
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式：
请选择
作者升序
作者降序
WOS被引频次升序
WOS被引频次降序
期刊影响因子升序
期刊影响因子降序
发表日期升序
发表日期降序
题名升序
题名降序
提交时间升序
提交时间降序
王棕（ Roystonea regia ）的茎干储水和水分平衡策略
学位论文
博士, 2019
作者:
马仁义
Adobe PDF(1126Kb)
|
收藏
|
浏览/下载：188/1
|
提交时间：2021/01/05
MYC2调控玉米丁布类代谢物及茉莉酸浸种提高作物抗虫性的研究
学位论文
硕士, 2018
作者:
马灿容
Adobe PDF(4168Kb)
|
收藏
|
浏览/下载：168/2
|
提交时间：2021/01/05
杓兰属和兜兰属植物叶片结构、扩散导度与光合作用
学位论文
硕士, 2018
作者:
杨忠慧
Adobe PDF(3899Kb)
|
收藏
|
浏览/下载：76/1
|
提交时间：2021/01/05
两种特定环境条件变化对种子萌发的影响
学位论文
博士, 2018
作者:
胡晓龙
Adobe PDF(4713Kb)
|
收藏
|
浏览/下载：43/0
|
提交时间：2021/01/05
复杂FG及其结构片段的确切结构与抗凝活性研究
学位论文
博士, 2018
作者:
尹荣华
Adobe PDF(31449Kb)
|
收藏
|
浏览/下载：72/1
|
提交时间：2021/01/05
广义马铃苣苔属系统分类和花粉形态研究
学位论文
博士, 2018
作者:
张亚梅
Adobe PDF(9012Kb)
|
收藏
|
浏览/下载：68/3
|
提交时间：2021/01/05
西双版纳橡胶林和热带季雨林土壤呼吸的时空变化研究
学位论文
硕士, 2018
作者:
赵永丽
Adobe PDF(3016Kb)
|
收藏
|
浏览/下载：88/2
|
提交时间：2021/01/05
翘首杜鹃的保护生物学研究
学位论文
博士, 2018
作者:
李盛辉
Adobe PDF(6028Kb)
|
收藏
|
浏览/下载：69/4
|
提交时间：2021/01/05
中国植物学会八十五周年学术年会论文集摘要汇编
会议录
会议录编者:
植物学会
Adobe PDF(8518Kb)
|
收藏
|
浏览/下载：211/11
|
提交时间：2018/10/24
12th全国天然有机化学学术会议摘要集
会议录
会议录编者:
中国化学会
Adobe PDF(123481Kb)
|
收藏
|
浏览/下载：181/8
|
提交时间：2018/10/24
