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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
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植物化学与西部植... [161]
昆明植物所硕博研... [152]
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中国科学院东亚植物... [61]
资源植物与生物技术... [57]
离退休 [19]
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郝小江 [41]
张颖君 [22]
邸迎彤 [19]
刘爱忠 [19]
张于 [18]
李艳 [16]
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云南植物研究 [22]
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植物分类与资源学报 [14]
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GST, P < 0.05) were exhibited by this species. The SAMOVA revealed seven diverging groups of related chlorotypes, six of them had distinct nonoverlapping geographical ranges: one in the northeast comprising 10 populations, a second with a southeast distribution comprising 22 populations, and the remaning four groups comprising 15 populations located in the west part of the species’ range along different river valleys. The genetic clustering of populations into three regions was also supported by analysis of molecular variance, which showed that most genetic variation (82.43%) was found among these three regions. Two clusters were distinguished by both phylogenetic analysis and genealogical analysis of chlorotypes, one consisting of chlorotypes from the western region and the second consisting of those from the eastern region. Significant genetic differences between the two regions might be attributed to vicariance and restricted gene flow, and this vicariance could be explained by the physical environmental heterogeneity on each side of the Tanaka-Kaiyong Line. Following the uplift of the Tibetan Plateau, the reorganization of the major river drainages was primarily caused by river separation and capture events. These historical events could change the distribution of S. davidii from fragmented to continuous (Upper/Lower Jinshajiang and Yalongjiang/Daduhe), and from continuous to fragmented (Nujiang and Jinshajiang/Honghe). However, spatial and temporal patterns of phylogeographic divergence are strongly associated with historical disjunction rather than modern drainage connections. Moreover, the following north-south split in the eastern region and effective isolation with their genetic diversity were essentially modelled by genetic drift. The higher chlorotype richness and genetic divergence for populations in western region compared with other two regions suggests that there were multipe refugia or in situ survival of S. davidii in the Himalayan-Hengduan Mountain region. Fixation of chlorotypes in the northeastern region and near fixation in the southeastern region suggest a recent colonization of these areas. We further found that this species underwent past range expansion around 37-303 thousand years ago (kya). The southeastern populations likely experienced a demographic expansion via unidirectional gene flow along rivers, while northeastern populations underwent a more northward expansion, both from initial populations (s) (21, 22, 23) preserved on eastern refugia (Jinshajiang). This process might have been accompanied with a series of founder effects or bottlenecks making populations genetically impoverished. 3. Phylogeographic analysisbased on nuclear sequence，We sequenced the nuclear (ncpGS) region in all populations sampled, recovering 23 nuclear haplotypes. Compared to cpDNA, both NST (0.470) and GST (0.338) were relatively lower, but NST was also significantly larger than GST. 37.10% of the total variation was distributed among regions which was much lower than that shown by chlorotypes. Thus, more extensive distribution of nuclear haplotypes was exhibited across the geographical range instead of the strong population subdivision observed in chlorotypes. Similarly to the chloroplast data, we found that genetic differentiation of nDNA was positively correlated with the geographical distance, but the increase in the geographical distance between populations did not increase the genetic differentiation of nDNA as rapidly as that of cpDNA. These contrasting levels between the chloroplast and nuclear genomes of S. davidii are likely due to limited gene flow of cpDNA by seeds vs. the extensive gene flow of nDNA by wind-mediated pollen in the population history. We also determined from nuclear markers that haplotype diversity was reduced in the southeastern and northeastern regions due to the loss of rare haplotypes in western region. This reduction of gene diversity is also a signature of founder events or recent bottleneck during post-glacial colonization. However, nuclear diversity within populations remains high. This provides evidence that regionally pollen flow might be sufficiently high to blur the genetic identity of founder populations over a reasonably large spatial scale.3. Relationships among three varieties，The phylogenetic analysis identified two phylogroups of chlorotypes, corresponding to S. davidii var. davidii and var. chuansinesis. The former was distinguished by the abscence of predonminant nuclear haplotype H1 of the latter. The monophyletic group of chlorotypes in var. davidii and var. liangshanesis showed their relatively close relationship. And their genetic divergence from the third variety appears to be relative to their slight morphological difference in leaf size and the divergent environmental niche spaces they occupy. Thus, the observed differences in morphological characters between var. chuansinesis and other two varieties can be explained by the seed dispersal limitation illustrated above (as inferred by geographical separation) and by environmental heterogeneity (as inferred by precipitation or elevation) or by a combination of both. After all, the geological changes, drainage reorganization, and floristic differences following the Himalayan uplift have been suggested to affect the genetic structure of S. davidii. These results provide new insights into the phylogeographic pattern of plants in China. In addition, the unique population genetic structure found in S. davidii has provided important insights into the evolutionary history of this species. The genetic profile uncovered in this study is also critical for its conservation management. Our study has uncovered the existence of at least two ‘evolutionary significant units’ independent units within S. davidii, corresponding to var. davidii from eastern region and var. chuansinensis from western region. The conservation efforts should first focus on most western populations and on the southeastern ones exhibiting high levels of genetic diversity, while the genetically homogeneous northeastern populations located in the degraded Loess Plateau should require much greater conservation 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Master degree thesis studied on the chemical constituents and bioactivities of Azadirachta indica and Jatropha curcas which both have insecticidal activity. 58 compounds, including four new ones, were isolated and identified from this two species by various chromatographic processes. The cytotoxicities of some compounds obtained from Azadirachta indica were evaluated. Finally, this thesis also made a review on the chemical constituents and bioactivities from plants of genus Melia. Chapter 1 Chemical constituents and bioactivities of Azadirachta indica，From the methanol extract of branches and leaves of Azadirachta indicia, 53 compounds, including four new ones, were isolated and identified based on spectral techniques. These compounds referred to sesquiterpenoids, triterpenoids, steroids and flavonoids. Two of the new compounds were C30 triterpenoids and the other two were tetranortriterpenoids. 26 compounds were evaluated for their cytotoxicities and some were found to have potential cytotoxicities. The abundant constituent, nimbolide, showed strong cytotoxicities against all the tested cell lines. Chapter 2 Chemical constituents of Jatropha curcas，Nine known compounds were isolated from the methanol extract of branches and leaves of J. curcas. Chapter 3 Review on chemical constituents and bioactivities of genus Melia，This chapter made a review on the chemical constituents and bioactivities of genus Melia based on the literatures which were reported before 2010.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Euphorbiaceae&order=desc&&fq=dc.project.title_filter%3AThe%5C+Master%5C+degree%5C+thesis%5C+studied%5C+on%5C+the%5C+chemical%5C+constituents%5C+and%5C+bioactivities%5C+of%5C+Azadirachta%5C+indica%5C+and%5C+Jatropha%5C+curcas%5C+which%5C+both%5C+have%5C+insecticidal%5C+activity.%5C+58%5C+compounds%2C%5C+including%5C+four%5C+new%5C+ones%2C%5C+were%5C+isolated%5C+and%5C+identified%5C+from%5C+this%5C+two%5C+species%5C+by%5C+various%5C+chromatographic%5C+processes.%5C+The%5C+cytotoxicities%5C+of%5C+some%5C+compounds%5C+obtained%5C+from%5C+Azadirachta%5C+indica%5C+were%5C+evaluated.%5C+Finally%2C%5C+this%5C+thesis%5C+also%5C+made%5C+a%5C+review%5C+on%5C+the%5C+chemical%5C+constituents%5C+and%5C+bioactivities%5C+from%5C+plants%5C+of%5C+genus%5C+Melia.%5C+Chapter%5C+1%5C+Chemical%5C+constituents%5C+and%5C+bioactivities%5C+of%5C+Azadirachta%5C+indica%EF%BC%8CFrom%5C+the%5C+methanol%5C+extract%5C+of%5C+branches%5C+and%5C+leaves%5C+of%5C+Azadirachta%5C+indicia%2C%5C+53%5C+compounds%2C%5C+including%5C+four%5C+new%5C+ones%2C%5C+were%5C+isolated%5C+and%5C+identified%5C+based%5C+on%5C+spectral%5C+techniques.%5C+These%5C+compounds%5C+referred%5C+to%5C+sesquiterpenoids%2C%5C+triterpenoids%2C%5C+steroids%5C+and%5C+flavonoids.%5C+Two%5C+of%5C+the%5C+new%5C+compounds%5C+were%5C+C30%5C+triterpenoids%5C+and%5C+the%5C+other%5C+two%5C+were%5C+tetranortriterpenoids.%5C+26%5C+compounds%5C+were%5C+evaluated%5C+for%5C+their%5C+cytotoxicities%5C+and%5C+some%5C+were%5C+found%5C+to%5C+have%5C+potential%5C+cytotoxicities.%5C+The%5C+abundant%5C+constituent%2C%5C+nimbolide%2C%5C+showed%5C+strong%5C+cytotoxicities%5C+against%5C+all%5C+the%5C+tested%5C+cell%5C+lines.%5C+Chapter%5C+2%5C+Chemical%5C+constituents%5C+of%5C+Jatropha%5C+curcas%EF%BC%8CNine%5C+known%5C+compounds%5C+were%5C+isolated%5C+from%5C+the%5C+methanol%5C+extract%5C+of%5C+branches%5C+and%5C+leaves%5C+of%5C+J.%5C+curcas.%5C+Chapter%5C+3%5C+Review%5C+on%5C+chemical%5C+constituents%5C+and%5C+bioactivities%5C+of%5C+genus%5C+Melia%EF%BC%8CThis%5C+chapter%5C+made%5C+a%5C+review%5C+on%5C+the%5C+chemical%5C+constituents%5C+and%5C+bioactivities%5C+of%5C+genus%5C+Melia%5C+based%5C+on%5C+the%5C+literatures%5C+which%5C+were%5C+reported%5C+before%5C+2010."},{"jsname":"The Xianfeng flora and its palaeoclimte were studied using three quantitative methods. The vegetation and climatic change in Yunnan were also discussed in this paper. The results are summarized as follows:1） 34 species belonging to 9 families, 21 genera were identified in Xianfeng flora. The dominant families are Fagaceae and Lauraceae. Most genera are tropic and subtropic distribution. Consequently, Xianfeng flora is a typical subtropic flora dominanted by Fagaceae and Lauraceae.2）Two new coniferous species were identified, Pinus prekesiya and Tsuga miodumosa. P. prekesiya sp. nov., which belongs to subsection Pinus of subgenus Pinus shows a combination of characters of P. kesiya and P. yunnanensis, but has a closer affinity with P. kesiya which distributes in the humid region of Yunnan and therefore suggests a more humid climate in central Yunnan during the late Miocene than today. The general cooling trend during the late Neogene and topographic change due to the dramatic Tibetan uplift might have cause a vicariance origin of P. kesiya and P. yunnanensis from the ancestral P. prekesiya. Tsuga miodumosa shows a closest affinity with T. dumosa and might represent the ancestral stock of T. dumosa. The discovery of the Tsuga cone confirmed the presence of Tsuga in the Miocene of southwestern China and represents the earliest Tsuga megafossil record in China. The new species provides fossil evidence to support molecular phylogeny study that T. dumosa might be differentiated in the Miocene. It also support the hypothesis that diversification of the genus occurred mainly during Miocene and Pliocene time as global climate cooled and new habitats formed in response to major orogenic events.3）The MATs results from three methods (CA: 17.2-18.0°C；CLAMP3B: 15.7±1.33°C；LMA: 17.2±1.6°C) are higher than present. This indicates that the climate at late Miocene is warmer than today. The MAPs from CA and CLAMP are 1206-1537.4mm and 1297.0±184.7mm respectively, which are higher than today (1003.2mm) obviously. This indicates that the climate is more humid in late Miocene. The differences between precipitation in humid season and dry season suggest the existence of seasonality，but not so strong as today. The palaeoelevation was reconstructed using CA method; the result indicates a lower elevation (1330-1500m) of Xianfeng in late Miocene compared to today.4) The palaeoenvirmental change was discussed based on the comparisons of fossil records and paleoclimate constructions. The results show that, at late Miocene, most floras represented ever-green forests dominanted by Fagaceae and Lauraceae etc. The climate of Yunnan in Miocene was warmer and more humid than today. At Pliocene age, the vegetation type in West Yunnan is still typical ever-green forest, while in the Sanying flora, the species adapt to cold environment like Quercus sect. Heterobalnus increased greatly.5) Two monsoon sensitivity indices were used to illustrate the change of sensitivity of monsoon climate. The results suggest lower seasonality and monsoon sensitivity, especially the winter monsoon sensitivity during late Miocene.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Euphorbiaceae&order=desc&&fq=dc.project.title_filter%3AThe%5C+Xianfeng%5C+flora%5C+and%5C+its%5C+palaeoclimte%5C+were%5C+studied%5C+using%5C+three%5C+quantitative%5C+methods.%5C+The%5C+vegetation%5C+and%5C+climatic%5C+change%5C+in%5C+Yunnan%5C+were%5C+also%5C+discussed%5C+in%5C+this%5C+paper.%5C+The%5C+results%5C+are%5C+summarized%5C+as%5C+follows%5C%3A1%EF%BC%89%5C+34%5C+species%5C+belonging%5C+to%5C+9%5C+families%2C%5C+21%5C+genera%5C+were%5C+identified%5C+in%5C+Xianfeng%5C+flora.%5C+The%5C+dominant%5C+families%5C+are%5C+Fagaceae%5C+and%5C+Lauraceae.%5C+Most%5C+genera%5C+are%5C+tropic%5C+and%5C+subtropic%5C+distribution.%5C+Consequently%2C%5C+Xianfeng%5C+flora%5C+is%5C+a%5C+typical%5C+subtropic%5C+flora%5C+dominanted%5C+by%5C+Fagaceae%5C+and%5C+Lauraceae.2%EF%BC%89Two%5C+new%5C+coniferous%5C+species%5C+were%5C+identified%2C%5C+Pinus%5C+prekesiya%5C+and%5C+Tsuga%5C+miodumosa.%5C+P.%5C+prekesiya%5C+sp.%5C+nov.%2C%5C+which%5C+belongs%5C+to%5C+subsection%5C+Pinus%5C+of%5C+subgenus%5C+Pinus%5C+shows%5C+a%5C+combination%5C+of%5C+characters%5C+of%5C+P.%5C+kesiya%5C+and%5C+P.%5C+yunnanensis%2C%5C+but%5C+has%5C+a%5C+closer%5C+affinity%5C+with%5C+P.%5C+kesiya%5C+which%5C+distributes%5C+in%5C+the%5C+humid%5C+region%5C+of%5C+Yunnan%5C+and%5C+therefore%5C+suggests%5C+a%5C+more%5C+humid%5C+climate%5C+in%5C+central%5C+Yunnan%5C+during%5C+the%5C+late%5C+Miocene%5C+than%5C+today.%5C+The%5C+general%5C+cooling%5C+trend%5C+during%5C+the%5C+late%5C+Neogene%5C+and%5C+topographic%5C+change%5C+due%5C+to%5C+the%5C+dramatic%5C+Tibetan%5C+uplift%5C+might%5C+have%5C+cause%5C+a%5C+vicariance%5C+origin%5C+of%5C+P.%5C+kesiya%5C+and%5C+P.%5C+yunnanensis%5C+from%5C+the%5C+ancestral%5C+P.%5C+prekesiya.%5C+Tsuga%5C+miodumosa%5C+shows%5C+a%5C+closest%5C+affinity%5C+with%5C+T.%5C+dumosa%5C+and%5C+might%5C+represent%5C+the%5C+ancestral%5C+stock%5C+of%5C+T.%5C+dumosa.%5C+The%5C+discovery%5C+of%5C+the%5C+Tsuga%5C+cone%5C+confirmed%5C+the%5C+presence%5C+of%5C+Tsuga%5C+in%5C+the%5C+Miocene%5C+of%5C+southwestern%5C+China%5C+and%5C+represents%5C+the%5C+earliest%5C+Tsuga%5C+megafossil%5C+record%5C+in%5C+China.%5C+The%5C+new%5C+species%5C+provides%5C+fossil%5C+evidence%5C+to%5C+support%5C+molecular%5C+phylogeny%5C+study%5C+that%5C+T.%5C+dumosa%5C+might%5C+be%5C+differentiated%5C+in%5C+the%5C+Miocene.%5C+It%5C+also%5C+support%5C+the%5C+hypothesis%5C+that%5C+diversification%5C+of%5C+the%5C+genus%5C+occurred%5C+mainly%5C+during%5C+Miocene%5C+and%5C+Pliocene%5C+time%5C+as%5C+global%5C+climate%5C+cooled%5C+and%5C+new%5C+habitats%5C+formed%5C+in%5C+response%5C+to%5C+major%5C+orogenic%5C+events.3%EF%BC%89The%5C+MATs%5C+results%5C+from%5C+three%5C+methods%5C+%5C%28CA%5C%3A%5C+17.2%5C-18.0%C2%B0C%EF%BC%9BCLAMP3B%5C%3A%5C+15.7%C2%B11.33%C2%B0C%EF%BC%9BLMA%5C%3A%5C+17.2%C2%B11.6%C2%B0C%5C%29%5C+are%5C+higher%5C+than%5C+present.%5C+This%5C+indicates%5C+that%5C+the%5C+climate%5C+at%5C+late%5C+Miocene%5C+is%5C+warmer%5C+than%5C+today.%5C+The%5C+MAPs%5C+from%5C+CA%5C+and%5C+CLAMP%5C+are%5C+1206%5C-1537.4mm%5C+and%5C+1297.0%C2%B1184.7mm%5C+respectively%2C%5C+which%5C+are%5C+higher%5C+than%5C+today%5C+%5C%281003.2mm%5C%29%5C+obviously.%5C+This%5C+indicates%5C+that%5C+the%5C+climate%5C+is%5C+more%5C+humid%5C+in%5C+late%5C+Miocene.%5C+The%5C+differences%5C+between%5C+precipitation%5C+in%5C+humid%5C+season%5C+and%5C+dry%5C+season%5C+suggest%5C+the%5C+existence%5C+of%5C+seasonality%EF%BC%8Cbut%5C+not%5C+so%5C+strong%5C+as%5C+today.%5C+The%5C+palaeoelevation%5C+was%5C+reconstructed%5C+using%5C+CA%5C+method%5C%3B%5C+the%5C+result%5C+indicates%5C+a%5C+lower%5C+elevation%5C+%5C%281330%5C-1500m%5C%29%5C+of%5C+Xianfeng%5C+in%5C+late%5C+Miocene%5C+compared%5C+to%5C+today.4%5C%29%5C+The%5C+palaeoenvirmental%5C+change%5C+was%5C+discussed%5C+based%5C+on%5C+the%5C+comparisons%5C+of%5C+fossil%5C+records%5C+and%5C+paleoclimate%5C+constructions.%5C+The%5C+results%5C+show%5C+that%2C%5C+at%5C+late%5C+Miocene%2C%5C+most%5C+floras%5C+represented%5C+ever%5C-green%5C+forests%5C+dominanted%5C+by%5C+Fagaceae%5C+and%5C+Lauraceae%5C+etc.%5C+The%5C+climate%5C+of%5C+Yunnan%5C+in%5C+Miocene%5C+was%5C+warmer%5C+and%5C+more%5C+humid%5C+than%5C+today.%5C+At%5C+Pliocene%5C+age%2C%5C+the%5C+vegetation%5C+type%5C+in%5C+West%5C+Yunnan%5C+is%5C+still%5C+typical%5C+ever%5C-green%5C+forest%2C%5C+while%5C+in%5C+the%5C+Sanying%5C+flora%2C%5C+the%5C+species%5C+adapt%5C+to%5C+cold%5C+environment%5C+like%5C+Quercus%5C+sect.%5C+Heterobalnus%5C+increased%5C+greatly.5%5C%29%5C+Two%5C+monsoon%5C+sensitivity%5C+indices%5C+were%5C+used%5C+to%5C+illustrate%5C+the%5C+change%5C+of%5C+sensitivity%5C+of%5C+monsoon%5C+climate.%5C+The%5C+results%5C+suggest%5C+lower%5C+seasonality%5C+and%5C+monsoon%5C+sensitivity%2C%5C+especially%5C+the%5C+winter%5C+monsoon%5C+sensitivity%5C+during%5C+late%5C+Miocene."},{"jsname":"The floritistic composition, characteristics, endemism, origin and evolution were studied on the base of literature checked, field investigation, specimens checked and previous research work. The main result are as follows: 1. Guishan Region is rich in seed-plants. The Guishan Region flora consists of 129 families and 488 genera and 1069 species of which 6 species in 5 genera and 3 families belong to Gymnosperm, 842 species in 381 genera and 100 families belong to dicotyledon, 421 species in 102 genera and 26 families belong to monocotyledon.2. Flora Composition: The floristic elements of 62.02% tropical families and 37.98% temperate one indicates that the flora of this region has a close relationship with tropical flora historically and geographically. The floristic elements of 44.68% tropical genera and 52.96% temperate one reveals dominant temperate property, which one of the typical floristic characters in subtropical mountain region; the floristic elements of 53.83% tropical species(excluding species which are endemic to china and distribute world-wide ), 46.17% temperate ones indicates that the flora is subtropical in nature. 433 species are endemic to China ,43.96% of all the species (excluding the species world-wide).Very few species (44 species endemic to China accounted for 10.16%) distribute to the North, most of which distribute only to Shanxi, Henan, Gansu Province., indicating weak feature of temperate flora of Guishan region in nature. Statistical analysis showed that indicates that the flora of this region has a close relationship with tropical flora historically and geographically, shows transitional features in flora between tropical to temperate flora.. 3. By the comparison with five adjacent limestone and non-limestone flora on the level of family and genus, we found that the flora of Guishan Region is most closely related to the flora of Shishan Mountain and Xiaobaicaoling and Wuliang Mountain all of which situate in Central Yunnan. So the flora position of Guishan Region is: Central Yunnan Plaetau Subregion, the Yunnan Plaetau Region, the Sino-Himalayan forest Subkingdom, the east Asiatic Kingdom.4. The endemic plants in Guishan Region are rich, and the flora of Guishan Region shows limestone features. 10 genera are endemic to China, 433 species are endemic to China. Among the Chineses endemic plants, 1 genes and 7 species are endemic to Guishan Region in which 1 genes(Parasiometrum) and 3 species (Begonia guishanensis, Petrocosmea guishanensis, Parasiometrum mileens) are limestone exclusive.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Euphorbiaceae&order=desc&&fq=dc.project.title_filter%3AThe%5C+floritistic%5C+composition%2C%5C+characteristics%2C%5C+endemism%2C%5C+origin%5C+and%5C+evolution%5C+were%5C+studied%5C+on%5C+the%5C+base%5C+of%5C+literature%5C+checked%2C%5C+field%5C+investigation%2C%5C+specimens%5C+checked%5C+and%5C+previous%5C+research%5C+work.%5C+The%5C+main%5C+result%5C+are%5C+as%5C+follows%5C%3A%5C+1.%5C+Guishan%5C+Region%5C+is%5C+rich%5C+in%5C+seed%5C-plants.%5C+The%5C+Guishan%5C+Region%5C+flora%5C+consists%5C+of%5C+129%5C+families%5C+and%5C+488%5C+genera%5C+and%5C+1069%5C+species%5C+of%5C+which%5C+6%5C+species%5C+in%5C+5%5C+genera%5C+and%5C+3%5C+families%5C+belong%5C+to%5C+Gymnosperm%2C%5C+842%5C+species%5C+in%5C+381%5C+genera%5C+and%5C+100%5C+families%5C+belong%5C+to%5C+dicotyledon%2C%5C+421%5C+species%5C+in%5C+102%5C+genera%5C+and%5C+26%5C+families%5C+belong%5C+to%5C+monocotyledon.2.%5C+Flora%5C+Composition%5C%3A%5C+The%5C+floristic%5C+elements%5C+of%5C+62.02%25%5C+tropical%5C+families%5C+and%5C+37.98%25%5C+temperate%5C+one%5C+indicates%5C+that%5C+the%5C+flora%5C+of%5C+this%5C+region%5C+has%5C+a%5C+close%5C+relationship%5C+with%5C+tropical%5C+flora%5C+historically%5C+and%5C+geographically.%5C+The%5C+floristic%5C+elements%5C+of%5C+44.68%25%5C+tropical%5C+genera%5C+and%5C+52.96%25%5C+temperate%5C+one%5C+reveals%5C+dominant%5C+temperate%5C+property%2C%5C+which%5C+one%5C+of%5C+the%5C+typical%5C+floristic%5C+characters%5C+in%5C+subtropical%5C+mountain%5C+region%5C%3B%5C+the%5C+floristic%5C+elements%5C+of%5C+53.83%25%5C+tropical%5C+species%5C%28excluding%5C+species%5C+which%5C+are%5C+endemic%5C+to%5C+china%5C+and%5C+distribute%5C+world%5C-wide%5C+%5C%29%2C%5C+46.17%25%5C+temperate%5C+ones%5C+indicates%5C+that%5C+the%5C+flora%5C+is%5C+subtropical%5C+in%5C+nature.%5C+433%5C+species%5C+are%5C+endemic%5C+to%5C+China%5C+%2C43.96%25%5C+of%5C+all%5C+the%5C+species%5C+%5C%28excluding%5C+the%5C+%5C+species%5C+world%5C-wide%5C%29.Very%5C+few%5C+species%5C+%5C%2844%5C+species%5C+endemic%5C+to%5C+China%5C+accounted%5C+for%5C+10.16%25%5C%29%5C+distribute%5C+to%5C+the%5C+North%2C%5C+most%5C+of%5C+which%5C+distribute%5C+only%5C+to%5C+Shanxi%2C%5C+Henan%2C%5C+Gansu%5C+Province.%2C%5C+indicating%5C+weak%5C+feature%5C+of%5C+temperate%5C+flora%5C+of%5C+Guishan%5C+region%5C+in%5C+nature.%5C+Statistical%5C+analysis%5C+showed%5C+that%5C+%5C+indicates%5C+that%5C+the%5C+flora%5C+of%5C+this%5C+region%5C+has%5C+a%5C+close%5C+relationship%5C+with%5C+tropical%5C+flora%5C+historically%5C+and%5C+geographically%2C%5C+shows%5C+transitional%5C+features%5C+in%5C+flora%5C+between%5C+tropical%5C+to%5C+temperate%5C+flora..%5C+3.%5C+By%5C+the%5C+comparison%5C+with%5C+five%5C+adjacent%5C+limestone%5C+and%5C+non%5C-limestone%5C+flora%5C+on%5C+the%5C+level%5C+of%5C+family%5C+and%5C+genus%2C%5C+we%5C+found%5C+that%5C+the%5C+flora%5C+of%5C+Guishan%5C+Region%5C+is%5C+most%5C+closely%5C+related%5C+to%5C+the%5C+flora%5C+of%5C+Shishan%5C+Mountain%5C+and%5C+Xiaobaicaoling%5C+and%5C+Wuliang%5C+Mountain%5C+all%5C+of%5C+which%5C+situate%5C+in%5C+Central%5C+Yunnan.%5C+So%5C+the%5C+flora%5C+position%5C+of%5C+Guishan%5C+Region%5C+is%5C%3A%5C+Central%5C+Yunnan%5C+Plaetau%5C+Subregion%2C%5C+the%5C+Yunnan%5C+Plaetau%5C+Region%2C%5C+the%5C+Sino%5C-Himalayan%5C+forest%5C+Subkingdom%2C%5C+the%5C+east%5C+Asiatic%5C+Kingdom.4.%5C+The%5C+endemic%5C+plants%5C+in%5C+Guishan%5C+Region%5C+are%5C+rich%2C%5C+and%5C+the%5C+flora%5C+of%5C+Guishan%5C+Region%5C+shows%5C+limestone%5C+features.%5C+10%5C+genera%5C+are%5C+endemic%5C+to%5C+China%2C%5C+433%5C+species%5C+are%5C+endemic%5C+to%5C+China.%5C+Among%5C+the%5C+Chineses%5C+endemic%5C+plants%2C%5C+1%5C+genes%5C+and%5C+7%5C+species%5C+are%5C+endemic%5C+to%5C+Guishan%5C+Region%5C+in%5C+which%5C+1%5C+genes%5C%28Parasiometrum%5C%29%5C+and%5C+3%5C+species%5C+%5C%28Begonia%5C+guishanensis%2C%5C+Petrocosmea%5C+guishanensis%2C%5C+Parasiometrum%5C+mileens%5C%29%5C+are%5C+limestone%5C+exclusive."},{"jsname":"The membrane system of cell performs many important functions, such as separates cells from the environment, keeps the biochemical reactions in order ect.. The integrity of membrane is very important for plants to survive, especially under the environmental stress. Among all environmental factors, temperature has the closest relationship with membrane and intensively study on this area has been reported. Most researches are mainly focused on the relationship between the composition of fatty acid about membrane and low temperature, while that with high temperature are rare. Nowadays, the increasing concentration of CO2 resulted in increasing temperature and high temperature has become an important inhibition to crop productivity. Thus, it’s necessary and emergent to study the relationship between membrane lipids and high temperature.In the present dissertation, Arabidopsis and its high temperature sensitive mutant were chosen to study the relationship between membrane lipids and high temperature. The ESI-MS/MS was used to examine the composition of membrane lipids. High temperature includes two categories, one is heat stress and the other is moderate heat stress. Heat stress can be divided into two processes: with and without heat acclimation. Five results have been obtained grounding on these works. Firstly, different change models of membrane lipids during heat stress and moderate stress had been found. The degradation of membrane lipids during moderate heat stress was controlled, while that of heat stress was out of control. During moderate heat stress, the degradation mainly happened on chloroplast, such as DGDG and PG, especially those lipids which has polyunsaturated fatty acids. Under heat stress, the degradation about plasma membrane and chloroplast membrane shared same rates. Secondly, the degradation of membrane lipids was reduced when plants had experienced heat acclimation before heat stress, and this change had nothing to do with accumulation of HSP101. The results suggested the acquired thermo-tolerance not only had related with HSP101, but also with membrane lipids. Thirdly, the amount of phosphatidic acid (PA) played an important role during heat stress. If the amount of PA rose to proper extent, it benefited the plants, while if it rose to high level, it destroyed the membrane structure. At last, the HSP101 mutant had higher ratio of polyunsaturated fatty acids/ saturated fatty acids than that of wild Arabidopsis under long term moderate heat stress. The dissertation also included other two parts: the drought-tolerance of Thellungiella halophila and the chemical structure and bioactivity of the second metabolites from endophytes, which were isolated from Trewia nudiflor. Thellungiella halophila shared the same characteristic with Arabidopsis in many aspects, such as dwarf phenotype, short life cycle, fertility and small genome. The research indicated that at cDNA level, they were also very similar. Besides these Thellungiella halophila was more tolerant to stress condition. The previous research about Thellungiella halophila mainly focused on the high-salinity stress, and the researches of drought stress were rare. In this dissertation we focused on the drought-resistance of Thellungiella halophila. Compare to Arabidopsis, Thellungiella halophila could keep water content in high level, more resist to ROS, good photosynthesis activity and keep the membrane system integrity under drought stress. It was interesting that the substances, which rose when Arabidopsis under stress, were at high level in normal Thellungiella halophila, such as: proline, ABA. The degradation of membrane lipids mainly happened on chloroplast membrane of Arabidopsis. In contrast, the membrane of Thellungiella halophila didn’t change. All these evidence indicated that Thellungiella halophila was more drought-tolerant than Arabidopsis. During the research about the chemical structure and bioactivity of the second metabolites from endophytes, which were isolated from Trewia nudiflor, we isolated 46 endophytes from different parts of plants . 34 species of them were selected for bioactivity test, and the bioactivity test show that 50% of them have some bioactivity. We also isolated 24 compounds from 6 endophytes, and 22 of them have been identified by spectra data, including: macrolides, azaphilones, anthraquinones, and steroids. 8 of them are novel compounds. Judging from results, we know the Trewia nudiflor is good resources to isolate endophytes and the endophytes are good resources to search for novel and bioactivity compounds.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Euphorbiaceae&order=desc&&fq=dc.project.title_filter%3AThe%5C+membrane%5C+system%5C+of%5C+cell%5C+performs%5C+many%5C+important%5C+functions%2C%5C+such%5C+as%5C+separates%5C+cells%5C+from%5C+the%5C+environment%2C%5C+keeps%5C+the%5C+biochemical%5C+reactions%5C+in%5C+order%5C+ect..%5C+The%5C+integrity%5C+of%5C+membrane%5C+is%5C+very%5C+important%5C+for%5C+plants%5C+to%5C+survive%2C%5C+especially%5C+under%5C+the%5C+environmental%5C+stress.%5C+Among%5C+all%5C+environmental%5C+factors%2C%5C+temperature%5C+has%5C+the%5C+closest%5C+relationship%5C+with%5C+membrane%5C+and%5C+intensively%5C+study%5C+on%5C+this%5C+area%5C+has%5C+been%5C+reported.%5C+Most%5C+researches%5C+are%5C+mainly%5C+focused%5C+on%5C+the%5C+relationship%5C+between%5C+the%5C+composition%5C+of%5C+fatty%5C+acid%5C+about%5C+membrane%5C+and%5C+low%5C+temperature%2C%5C+while%5C+that%5C+with%5C+high%5C+temperature%5C+are%5C+rare.%5C+Nowadays%2C%5C+the%5C+increasing%5C+concentration%5C+of%5C+CO2%5C+resulted%5C+in%5C+increasing%5C+temperature%5C+and%5C+high%5C+temperature%5C+has%5C+become%5C+an%5C+important%5C+inhibition%5C+to%5C+crop%5C+productivity.%5C+Thus%2C%5C+it%E2%80%99s%5C+necessary%5C+and%5C+emergent%5C+to%5C+study%5C+the%5C+relationship%5C+between%5C+membrane%5C+lipids%5C+and%5C+high%5C+temperature.In%5C+the%5C+present%5C+dissertation%2C%5C+Arabidopsis%5C+and%5C+its%5C+high%5C+temperature%5C+sensitive%5C+mutant%5C+were%5C+chosen%5C+to%5C+study%5C+the%5C+relationship%5C+between%5C+membrane%5C+lipids%5C+and%5C+high%5C+temperature.%5C+The%5C+ESI%5C-MS%5C%2FMS%5C+was%5C+used%5C+to%5C+examine%5C+the%5C+composition%5C+of%5C+membrane%5C+lipids.%5C+High%5C+temperature%5C+includes%5C+two%5C+categories%2C%5C+one%5C+is%5C+heat%5C+stress%5C+and%5C+the%5C+other%5C+is%5C+moderate%5C+heat%5C+stress.%5C+Heat%5C+stress%5C+can%5C+be%5C+divided%5C+into%5C+two%5C+processes%5C%3A%5C+with%5C+and%5C+without%5C+heat%5C+acclimation.%5C+Five%5C+results%5C+have%5C+been%5C+obtained%5C+grounding%5C+on%5C+these%5C+works.%5C+Firstly%2C%5C+different%5C+change%5C+models%5C+of%5C+membrane%5C+lipids%5C+during%5C+heat%5C+stress%5C+and%5C+moderate%5C+stress%5C+had%5C+been%5C+found.%5C+The%5C+degradation%5C+of%5C+membrane%5C+lipids%5C+during%5C+moderate%5C+heat%5C+stress%5C+was%5C+controlled%2C%5C+while%5C+that%5C+of%5C+heat%5C+stress%5C+was%5C+out%5C+of%5C+control.%5C+During%5C+moderate%5C+heat%5C+stress%2C%5C+the%5C+degradation%5C+mainly%5C+happened%5C+on%5C+chloroplast%2C%5C+such%5C+as%5C+DGDG%5C+and%5C+PG%2C%5C+especially%5C+those%5C+lipids%5C+which%5C+has%5C+polyunsaturated%5C+fatty%5C+acids.%5C+Under%5C+heat%5C+stress%2C%5C+the%5C+degradation%5C+about%5C+plasma%5C+membrane%5C+and%5C+chloroplast%5C+membrane%5C+shared%5C+same%5C+rates.%5C+Secondly%2C%5C+the%5C+degradation%5C+of%5C+membrane%5C+lipids%5C+was%5C+reduced%5C+when%5C+plants%5C+had%5C+experienced%5C+heat%5C+acclimation%5C+before%5C+heat%5C+stress%2C%5C+and%5C+this%5C+change%5C+had%5C+nothing%5C+to%5C+do%5C+with%5C+accumulation%5C+of%5C+HSP101.%5C+The%5C+results%5C+suggested%5C+the%5C+acquired%5C+thermo%5C-tolerance%5C+not%5C+only%5C+had%5C+related%5C+with%5C+HSP101%2C%5C+but%5C+also%5C+with%5C+membrane%5C+lipids.%5C+Thirdly%2C%5C+the%5C+amount%5C+of%5C+phosphatidic%5C+acid%5C+%5C%28PA%5C%29%5C+played%5C+an%5C+important%5C+role%5C+during%5C+heat%5C+stress.%5C+If%5C+the%5C+amount%5C+of%5C+PA%5C+rose%5C+to%5C+proper%5C+extent%2C%5C+it%5C+benefited%5C+the%5C+plants%2C%5C+while%5C+if%5C+it%5C+rose%5C+to%5C+high%5C+level%2C%5C+it%5C+destroyed%5C+the%5C+membrane%5C+structure.%5C+At%5C+last%2C%5C+the%5C+HSP101%5C+mutant%5C+had%5C+higher%5C+ratio%5C+of%5C+polyunsaturated%5C+fatty%5C+acids%5C%2F%5C+saturated%5C+fatty%5C+acids%5C+than%5C+that%5C+of%5C+wild%5C+Arabidopsis%5C+under%5C+long%5C+term%5C+moderate%5C+heat%5C+stress.%5C+The%5C+dissertation%5C+also%5C+included%5C+other%5C+two%5C+parts%5C%3A%5C+the%5C+drought%5C-tolerance%5C+of%5C+Thellungiella%5C+halophila%5C+and%5C+the%5C+chemical%5C+structure%5C+and%5C+bioactivity%5C+of%5C+the%5C+second%5C+metabolites%5C+from%5C+endophytes%2C%5C+which%5C+were%5C+isolated%5C+from%5C+Trewia%5C+nudiflor.%5C+Thellungiella%5C+halophila%5C+shared%5C+the%5C+same%5C+characteristic%5C+with%5C+Arabidopsis%5C+in%5C+many%5C+aspects%2C%5C+such%5C+as%5C+dwarf%5C+phenotype%2C%5C+short%5C+life%5C+cycle%2C%5C+fertility%5C+and%5C+small%5C+genome.%5C+The%5C+research%5C+indicated%5C+that%5C+at%5C+cDNA%5C+level%2C%5C+they%5C+were%5C+also%5C+very%5C+similar.%5C+Besides%5C+these%5C+Thellungiella%5C+halophila%5C+was%5C+more%5C+tolerant%5C+to%5C+stress%5C+condition.%5C+The%5C+previous%5C+research%5C+about%5C+Thellungiella%5C+halophila%5C+mainly%5C+focused%5C+on%5C+the%5C+high%5C-salinity%5C+stress%2C%5C+and%5C+the%5C+researches%5C+of%5C+drought%5C+stress%5C+were%5C+rare.%5C+In%5C+this%5C+dissertation%5C+we%5C+focused%5C+on%5C+the%5C+drought%5C-resistance%5C+of%5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Project","dc.project.title_filter")'>
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Systema Angiospermarum
期刊论文
出版物, 3111, 页码: 1—21
Authors:
Zuo Z(作者)
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Submit date：2017/07/19
Bioengineering of Crops for Biofuels and Bioenergy
期刊论文
Energy Plantation Demonstration Project Center and Biotechnology Laboratory, 3111, 期号: 0, 页码: 1—16
Authors:
Ashwani Kumar
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Submit date：2017/07/24
台湾北部福山地区亚热带雨林幼苗之研究
期刊论文
出版物, 3111, 页码: 1-100
Authors:
吕佳陵
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Submit date：2017/07/19
EVOLUTION OF ANGIOSPERM POLLEN. 6. THE CELASTRALES, OXALIDALES, AND MALPIGHIALES (COM) GLADE AND ZYGOPHYLLALES
期刊论文
ANNALS OF THE MISSOURI BOTANICAL GARDEN, 2018, 卷号: 103, 期号: 3, 页码: 393-442
Authors:
Tao, Zhi-Bin
;
Wortley, Alexandra H.
;
Lu, Lu
;
Li, De-Zhu
;
Wang, Hong
;
Blackmore, Stephen
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Submit date：2019/03/18
Celastrales
Character State Distribution
Correlated Evolution
Fabids
Malpighiales
Oxalidales
Pollen Morphology
Pollination Syndrome
Systematic Significance
Zygophyllales
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
Editors:
植物学会
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Submit date：2018/10/24
Phylogenetic and morphological characterization of Byssosphaeria inacarangae sp nov., anu B. taiwanense sp nov from Macaranga tanarius
期刊论文
PHYTOTAXA, 2018, 卷号: 364, 期号: 3, 页码: 211-226
Authors:
Tennakoon, Danushka S.
;
Jeewon, Rajesh
;
Kuo, Chang-Hsin
;
Hyde, Kevin D.
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Submit date：2018/09/27
2 new species
Dothideomycetes
Macaranga
phylogeny
taxonomy
Neolinocarpon phayaoense sp nov (Linocarpaceae) from Thailand
期刊论文
PHYTOTAXA, 2018, 卷号: 362, 期号: 1, 页码: 77-86
Authors:
Senwanna, Chanokned
;
Phookamsak, Rungtiwa
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Bahkali, Ali H.
;
Elgorban, Abdallah M.
;
Cheewangkoon, Ratchadawan
;
Hyde, Kevin D.
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Submit date：2018/09/17
1 New Species
Para Rubber
Sordariomycetes
Taxonomy
无权访问的条目
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无权访问的条目
演示报告
Authors:
DAVID KIMUTAI MELLY
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无权访问的条目
演示报告
Authors:
张贝西
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