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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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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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Asia Biodiversity Research Institute, Chinese Academy of Sciences[2015CASEABRIRG001]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Ripe&order=desc&&fq=dc.project.title_filter%3ASoutheast%5C+Asia%5C+Biodiversity%5C+Research%5C+Institute%2C%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C%5B2015CASEABRIRG001%5C%5D"},{"jsname":"This thesis deals with the research work on the chemical constituents of Camellia taliensis, Camellia pachyandra, Camellia oleifera, Metapanax delavayi , Pu-er tea (Camellia sinensis var. assamica) and one of the dominant microorganisms in the post-fermentation of Pu-er tea, Aspergillus japonicus var. japonicus through the systematic phytochemical methods. By the modern techniques of chromatography, spectroscopy along with chemical degradation methods, 107 compounds were isolated and identified by MS, 1D and 2D NMR spectra along with other spectroscopic method along with chemical degradation. The compounds include hydrolysable tannins, flavan-3ols, flavonoid glycosides, triterpene glycosides, simple phenolics and so on, most of which were evaluated by antioxidant or anti-viral activities. Meantime, the HPLC analytical methods were applied to compare the chemical constituents of C. taliensis and C. pachyandra with with those of the cultivated tea, C. sinensis var. assamica. Above all, the detection methods were established for the analysis of tea polyphenols, tea polysaccharides, caffeine and the main polyphenolic constituents in tea. And finally, the progress of the research work on Pu-er tea was reviewed.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Ripe&order=desc&&fq=dc.project.title_filter%3AThis%5C+thesis%5C+deals%5C+with%5C+the%5C+research%5C+work%5C+on%5C+the%5C+chemical%5C+constituents%5C+of%5C+Camellia%5C+taliensis%2C%5C+Camellia%5C+pachyandra%2C%5C+Camellia%5C+oleifera%2C%5C+Metapanax%5C+delavayi%5C+%2C%5C+Pu%5C-er%5C+tea%5C+%5C%28Camellia%5C+sinensis%5C+var.%5C+assamica%5C%29%5C+and%5C+one%5C+of%5C+the%5C+dominant%5C+microorganisms%5C+in%5C+the%5C+post%5C-fermentation%5C+of%5C+Pu%5C-er%5C+tea%2C%5C+Aspergillus%5C+japonicus%5C+var.%5C+japonicus%5C+through%5C+the%5C+systematic%5C+phytochemical%5C+methods.%5C+By%5C+the%5C+modern%5C+techniques%5C+of%5C+chromatography%2C%5C+spectroscopy%5C+along%5C+with%5C+chemical%5C+degradation%5C+methods%2C%5C+107%5C+compounds%5C+were%5C+isolated%5C+and%5C+identified%5C+by%5C+MS%2C%5C+1D%5C+and%5C+2D%5C+NMR%5C+spectra%5C+along%5C+with%5C+other%5C+spectroscopic%5C+method%5C+along%5C+with%5C+chemical%5C+degradation.%5C+The%5C+compounds%5C+include%5C+hydrolysable%5C+tannins%2C%5C+flavan%5C-3ols%2C%5C+flavonoid%5C+glycosides%2C%5C+triterpene%5C+glycosides%2C%5C+simple%5C+phenolics%5C+and%5C+so%5C+on%2C%5C+most%5C+of%5C+which%5C+were%5C+evaluated%5C+by%5C+antioxidant%5C+or%5C+anti%5C-viral%5C+activities.%5C+Meantime%2C%5C+the%5C+HPLC%5C+analytical%5C+methods%5C+were%5C+applied%5C+to%5C+compare%5C+the%5C+chemical%5C+constituents%5C+of%5C+C.%5C+taliensis%5C+and%5C+C.%5C+pachyandra%5C+with%5C+with%5C+those%5C+of%5C+the%5C+cultivated%5C+tea%2C%5C+C.%5C+sinensis%5C+var.%5C+assamica.%5C+Above%5C+all%2C%5C+the%5C+detection%5C+methods%5C+were%5C+established%5C+for%5C+the%5C+analysis%5C+of%5C+tea%5C+polyphenols%2C%5C+tea%5C+polysaccharides%2C%5C+caffeine%5C+and%5C+the%5C+main%5C+polyphenolic%5C+constituents%5C+in%5C+tea.%5C+And%5C+finally%2C%5C+the%5C+progress%5C+of%5C+the%5C+research%5C+work%5C+on%5C+Pu%5C-er%5C+tea%5C+was%5C+reviewed."},{"jsname":"lastIndexed","jscount":"2024-05-24"}],"资助项目","dc.project.title_filter")'>
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Systematics and Biogeography of Aralia L. (Araliaceae):Revision of Aralia Sects. Aralia, Humiles, Nanae, andSciadodendron
期刊论文
出版物, 3111, 卷号: 57, 期号: 0, 页码: 1-172
作者:
Jun Wen
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浏览/下载：254/6
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提交时间：2017/07/24
Aralia
Aralia Sect. Aralia
Aralia Sect. Dimorphanthus
Aralia Sect. Humiles
Aralia Sect. Nanae
Aralia Sect. pentapanax
Aralia Sect. Sciadodendron
Biogeography
Araliaceae
Systematics
JATROPHA CURCAS L.AN INTERNATIONAL BOTANICAL ANSWER TOBIODIESEL PRODUCTION & RENEWABLE ENERGY
期刊论文
出版物, 3111, 期号: 0, 页码: 1—65
作者:
Zuo Z(作者)
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浏览/下载：156/1
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提交时间：2017/07/24
Diversity increases yield but reduces harvest index in crop mixtures
期刊论文
nature plants, 2021
作者:
Jianguo Chen
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浏览/下载：304/93
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提交时间：2021/08/23
Diversity increases yield but reduces harvest index in crop mixtures
期刊论文
NATURE PLANTS, 2021, 卷号: 7, 期号: 7, 页码: 893+
作者:
Chen,Jianguo
;
Engbersen,Nadine
;
Stefan,Laura
;
Schmid,Bernhard
;
Sun,Hang
;
Schob,Christian
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提交时间：2022/04/02
REPRODUCTIVE ALLOCATION
PLANT DIVERSITY
FUNCTIONAL TRAITS
PRODUCTIVITY
PLASTICITY
ALLOMETRY
COMPLEMENTARITY
VARIABILITY
MAIZE
LONG
Tropane alkaloid biosynthesis: a centennial review
期刊论文
NATURAL PRODUCT REPORTS, 2021, 卷号: 38, 期号: 9, 页码: 1634-1658
作者:
Huang,Jian-Ping
;
Wang,Yong-Jiang
;
Tian,Tian
;
Wang,Li
;
Yan,Yijun
;
Huang,Sheng-Xiong
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浏览/下载：122/34
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提交时间：2022/04/02
PUTRESCINE N-METHYLTRANSFERASE
TRANSFORMED ROOT CULTURES
2 TROPINONE REDUCTASES
ROLLE DES ACETATS
DATURA-STRAMONIUM
HYOSCYAMUS-NIGER
TOBACCO ALKALOIDS
ORNITHINE-DECARBOXYLASE
2-OXOGLUTARATE-DEPENDENT DIOXYGENASE
DIFFERENT STEREOSPECIFICITIES
Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra
期刊论文
JOURNAL OF PLANT ECOLOGY, 2021, 卷号: 14, 期号: 2, 页码: 229-240
作者:
Wang,Lin-Lin
;
Yang,Na-Cai
;
Chen,Min-Yu
;
Yang,Yong-Ping
;
Duan,Yuan-Wen
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浏览/下载：63/23
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提交时间：2022/04/02
natural selection
flower traits
polyploidy
sex separation
sexual dimorphism
GENDER DIMORPHISM
POLLEN LIMITATION
POLLINATOR VISITATION
PLANT REPRODUCTION
ALPINE PLANT
EVOLUTIONARY
STRATEGIES
DISPLAY
SYSTEM
FRUIT
Phylogenetic patterns suggest frequent multiple origins of secondary metabolites across the seed-plant 'tree of life'
期刊论文
NATIONAL SCIENCE REVIEW, 2021
作者:
Zhang,Yongzeng
;
Deng,Tao
;
Sun,Lu
;
Landis,Jacob B.
;
Moore,Michael J.
;
Wang,Hengchang
;
Wang,Yuehua
;
Hao,Xiaojiang
;
Chen,Jijun
;
Li,Shenghong
;
Xu,Maonian
;
Puno,Pema-Tenzin
;
Raven,Peter H.
;
Sun,Hang
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浏览/下载：134/21
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提交时间：2023/09/08
Climate-Fungal Pathogen Modeling Predicts Loss of Up to One-Third of Tea Growing Areas
期刊论文
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY, 2021, 卷号: 11, 页码: 610567
作者:
Tibpromma,Saowaluck
;
Dong,Yang
;
Ranjitkar,Sailesh
;
Schaefer,Douglas A.
;
Karunarathna,Samantha C.
;
Hyde,Kevin D.
;
Jayawardena,Ruvishika S.
;
Manawasinghe,Ishara S.
;
Bebber,Daniel P.
;
Promputtha,Itthayakorn
;
Xu,Jianchu
;
Mortimer,Peter E.
;
Sheng,Jun
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浏览/下载：96/25
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提交时间：2022/04/02
Camellia sinensis
climate change
crop loss
fungal diseases
perennial crops
BROWN BLIGHT DISEASE
CAMELLIA-SINENSIS
COLLETOTRICHUM-ACUTATUM
1ST REPORT
EXOBASIDIUM-VEXANS
YUNNAN PROVINCE
PLANT
GLOEOSPORIOIDES
PESTS
LEAF
Taxonomic revision of Sageretia (Rhamnaceae) from China I: identities of S. lucida, S. thea var. cordiformis and S. yunlongensis, with the description of a new species S. ellipsoidea
期刊论文
PHYTOKEYS, 2021, 期号: 179, 页码: 13-28
作者:
Yang,Yi
;
Peng,Hua
;
Sun,Hang
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浏览/下载：58/0
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提交时间：2022/04/02
Granite mountain
limestone mountain
Rhamnus
woody vine
Chemical ingredients characterization basing on 1H NMR and SHS-GC/MS in twelve cultivars of Coffea arabica roasted beans
期刊论文
FOOD RESEARCH INTERNATIONAL, 2021, 卷号: 147, 页码: 110544
作者:
Wang,Yanbing
;
Wang,Xiaoyuan
;
Hu,Guilin
;
Hong,Defu
;
Bai,Xuehui
;
Guo,Tieying
;
Zhou,Hua
;
Li,Jinhong
;
Qiu,Minghua
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浏览/下载：75/20
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提交时间：2022/04/02
Coffea arabica
Cultivar
GC
MS
Introgressed
Bourbon-Typica
H-1 NMR
CHLOROGENIC ACIDS
BEVERAGE QUALITY
AROMA COMPOUNDS
CLIMATE-CHANGE
GC
H-1-NMR
IMPACT
RUST
CUP
SPECTROSCOPY
