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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 < 0.001) and low levels of seed-based gene flow. C. debaoensis (Cycadaceae) is an endangered species restricted to the border of Guangxi and Yunnan province in southwest China. This species has been classified into two types: sand and karst, according to the soil matrix they grow on. We examined chloroplast sequence variation of the cpDNA sequences from 11 populations of this species. Significant population genetic differentiation was detected (GST= 0.684 and FST = 0.74160). There was marked genetic differentiation between populations in the sand and karst regions and no expansion was detected. Climate changes during glacial periods have had significant effects on the current distribution of cycads. The molecular phylogenetic data, together with the geographic distribution of the haplotypes, suggest that C. debaoensis experienced range contraction during glacial periods, and that the current populations are still confined to the original refugia in southwest China which have favorable habitats in glacial period. These results imply that small refugia were maintained in both sand and karst regions during the LGM (last glacial maximum). This species had no postglacial recolonization and only stayed in these refugia up to now. The low within-population diversity of C. debaoensis suggests that there were strong bottleneck events or founder effects within each separate region during the Quaternary climatic oscillations. Relatively high genetic and haplotype diversities were detected in the newly discovered populations, which located at intermediate locality of sand regions and had morphological variation; this is probably the consequence of the admixture of different haplotypes colonizing the area from separate sources. C. micholitzii occurs in the Annan Highlands in central Vietnam near the Laos border. C. bifida occurs in North Vietnam; its distribution extends across the border into adjacent localities in Guangxi and Yunnan in China. For the comparability between them,theywere considered as the same species C. micholitzii by many academicians. The cpDNA sequences from 11 populations showed that these very controversial species, C. micholitzii and C. bifida, is paraphyletic and should belong to the same species C. micholitzii. AMOVA analysis showed that the component of among-population within region/species (76.46%) was unexpectedly larger than the among-species/region component (14.97%), which also indicates that there is no justification for recognizing two species as C. micholitzii and C. bifida. This hypothesis was also supported by the geological data, especially the neotectonic history of the indo-china block, which started to move south since Oligocene and cause the geographic isolation of these two groups. Therefore, the most likely explanation to the phenotypic similarities between these two groups may be the retention of ancestral polymorphisms in the paraphyletic group due to incomplete lineage sorting. Furthermore, the similarities may also be ascribed to pollen-mediated gene flow among geographically proximate populations and/or phenotypic convergence under similar selection schemes in the same region. C.micholitzi had the higest genetic diversity (HT = 0.980,) and genetic differentiation (GST = 0.830, NST = 0.915) among the C. micholitzii complex. The high genetic diversity might be attributed to its long evolutionary history, highly diverse habitats. The ineffective mode of seed dispersal and dramatic neotectonic movement in the distribution range of this species could result in the high genetic differentiation. 2. Phylogeographic analysis based on nuclear ribosomal sequences, We sequenced the nrDNA ITS in all 27 populations sampled, 7 haplotypes were identified, among which C. micholitzii had 6, while C. multipinnata, C. longipetiolula and C. debaoensis shared the remaining one. Compared to chloroplast genes, nuclear genes had higher correlation between genetic and geographical distance, but lower interspecies differentiation (54.42% vs 25.24%). Phylogeographical structure of C. micholitzii and C.bifida based on ITS Variation was consistent with the morphology differentiation. This similar in nuclear gene should be ascribed to pollen-mediated gene flow among geographically proximate populations.Long-distance gene flow over the two groups was clearly interrupted, which brought on the nrDNA genetic differenciation between the geographically isolated groups, to a certain extent affected the morphological variation. 3. Interspecies relationships among Cycas micholitzii complex, We analysed chloroplast sequence variation of the atpB-rbcL and psbA-trnH intergenic spacers in 27 populations sampled of C. micholitzii complex, AMOVA analysis showed that the component of among-species/region component (59.21%). However, phylogenic analysis showed that the haplotypes of C. micholitzii complex couldn`t grouped into four clusters closely corresponding to the narrowly defined C. micholitzi, C. multipinnata, C. debaoensis and C. longipetiolula. We concluded that the conflict may result from several factors: firstly incomplete lineage sorting of C. micholitzii; secondly hybridization/introgression of sympatrically cycads, which would be supported by evidence base on nrDNA ITS sequences; thirdly intramolecular recombination in cpDNA of cycads; eventually the neotectonic movement in the distribution range of this 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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：255/6
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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
HANDBOOKOF BIOLOGICAL STATISTICS
期刊论文
出版物, 3111, 期号: 0, 页码: 1-291
作者:
JOHN H. MCDONALD
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浏览/下载：245/2
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提交时间：2017/07/24
Evolutionary ecology of plant-plant interactions
期刊论文
出版物, 3111, 页码: 1-144
作者:
Zuo Z(作者)
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浏览/下载：234/4
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提交时间：2017/07/19
Genome size variation and polyploidy prevalence in the genus Eragrostis are associated with the global dispersal in arid area
期刊论文
FRONTIERS IN PLANT SCIENCE, 2023, 卷号: 14, 页码: 1066925
作者:
Hutang,Ge-Ran
;
Tong,Yan
;
Zhu,Xun-Ge
;
Gao,Li-Zhi
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Adobe PDF(2586Kb)
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浏览/下载：12/2
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提交时间：2024/05/09
genome size
phylogeny
Eragrostis
adaptation
environmental factors
GRASS SUBFAMILY CHLORIDOIDEAE
NUCLEAR-DNA CONTENT
TEF ZUCC TROTTER
CHROMOSOME-NUMBERS
PHYLOGENETIC SIGNAL
NICHE CONSERVATISM
MOLECULAR PHYLOGENY
DROUGHT TOLERANCE
MODEL SELECTION
SOUTH-AFRICAN
基于图像和光谱的植物化学指标评估技术探索
学位论文
: 中国科学院大学, 2022
作者:
任子珏
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浏览/下载：4/0
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提交时间：2024/05/14
进化生态学，伪装植物，生物色彩，花色进化，化学防御
Evolutionary ecology, Cryptic coloration, Biological color, Evolution of flower color, Chemical defense
Nuclear phylotranscriptomics and phylogenomics support numerous polyploidization events and hypotheses for the evolution of rhizobial nitrogen-fixing symbiosis in Fabaceae
期刊论文
MOLECULAR PLANT, 2021, 卷号: 14, 期号: 5, 页码: 748-773
作者:
Zhao,Yiyong
;
Zhang,Rong
;
Jiang,Kai-Wen
;
Qi,Ji
;
Hu,Yi
;
Guo,Jing
;
Zhu,Renbin
;
Zhang,Taikui
;
Egan,Ashley N.
;
Yi,Ting-Shuang
;
Huang,Chien-Hsun
;
Ma,Hong
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浏览/下载：68/0
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提交时间：2022/04/02
Fabaceae
Leguminosae
nuclear phylogeny
divergence times
whole-genome duplication
rhizobial nodulation
COMPARATIVE GENOMICS
PHYLOGENETIC PERSPECTIVES
EARLY DIVERSIFICATION
PENALIZED LIKELIHOOD
ANCESTRAL POLYPLOIDY
MOLECULAR EVOLUTION
LOTUS-JAPONICUS
ANALYSES REVEAL
GENE
LEGUMINOSAE
Arbuscular mycorrhizal trees influence the latitudinal beta-diversity gradient of tree communities in forests worldwide
期刊论文
NATURE COMMUNICATIONS, 2021, 卷号: 12, 期号: 1, 页码: 3137
作者:
Zhong,Yonglin
;
Chu,Chengjin
;
Myers,Jonathan A.
;
Gilbert,Gregory S.
;
Lutz,James A.
;
Stillhard,Jonas
;
Zhu,Kai
;
Thompson,Jill
;
Baltzer,Jennifer L.
;
He,Fangliang
;
LaManna,Joseph A.
;
Davies,Stuart J.
;
Aderson-Teixeira,Kristina J.
;
Burslem,David F. R. P.
;
Alonso,Alfonso
;
Chao,Kuo-Jung
;
Wang,Xugao
;
Gao,Lianming
;
Orwig,David A.
;
Yin,Xue
;
Sui,Xinghua
;
Su,Zhiyao
;
Abiem,Iveren
;
Bissiengou,Pulcherie
;
Bourg,Norm
;
Butt,Nathalie
;
Cao,Min
;
Chang-Yang,Chia-Hao
;
Chao,Wei-Chun
;
Chapman,Hazel
;
Chen,Yu-Yun
;
Coomes,David A.
;
Cordell,Susan
;
de Oliveira,Alexandre A.
;
Du,Hu
;
Fang,Suqin
;
Giardina,Christian P.
;
Hao,Zhanqing
;
Hector,Andrew
;
Hubbell,Stephen P.
;
Janik,David
;
Jansen,Patrick A.
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Jiang,Mingxi
;
Jin,Guangze
;
Kenfack,David
;
Kral,Kamil
;
Larson,Andrew J.
;
Li,Buhang
;
Li,Xiankun
;
Li,Yide
;
Lian,Juyu
;
Lin,Luxiang
;
Liu,Feng
;
Liu,Yankun
;
Liu,Yu
;
Luan,Fuchen
;
Luo,Yahuang
;
Ma,Keping
;
Malhi,Yadvinder
;
McMahon,Sean M.
;
McShea,William
;
Memiaghe,Herve
;
Mi,Xiangcheng
;
Morecroft,Mike
;
Novotny,Vojtech
;
O'Brien,Michael J.
;
den Ouden,Jan
;
Parker,Geoffrey G.
;
Qiao,Xiujuan
;
Ren,Haibao
;
Reynolds,Glen
;
Samonil,Pavel
;
Sang,Weiguo
;
Shen,Guochun
;
Shen,Zhiqiang
;
Song,Guo-Zhang Michael
;
Sun,I-Fang
;
Tang,Hui
;
Tian,Songyan
;
Uowolo,Amanda L.
;
Uriarte,Maria
;
Wang,Bin
;
Wang,Xihua
;
Wang,Youshi
;
Weiblen,George D.
;
Wu,Zhihong
;
Xi,Nianxun
;
Xiang,Wusheng
;
Xu,Han
;
Xu,Kun
;
Ye,Wanhui
;
Yu,Mingjian
;
Zeng,Fuping
;
Zhang,Minhua
;
Zhang,Yingming
;
Zhu,Li
;
Zimmerman,Jess K.
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浏览/下载：271/171
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提交时间：2022/04/02
NEGATIVE DENSITY-DEPENDENCE
NESTEDNESS
TEMPERATURE
COMPONENTS
TURNOVER
PLANTS
FUNGI
ASSOCIATIONS
ECOLOGY
NETWORK
Appressorial interactions with host and their evolution
期刊论文
FUNGAL DIVERSITY, 2021, 卷号: 110, 期号: 1, 页码: 75-107
作者:
Chethana,K. W. Thilini
;
Jayawardena,Ruvishika S.
;
Chen,Yi-Jyun
;
Konta,Sirinapa
;
Tibpromma,Saowaluck
;
Phukhamsakda,Chayanard
;
Abeywickrama,Pranami D.
;
Samarakoon,Milan C.
;
Senwanna,Chanokned
;
Mapook,Ausana
;
Tang,Xia
;
Gomdola,Deecksha
;
Marasinghe,Diana S.
;
Padaruth,Oundhyalah D.
;
Balasuriya,Abhaya
;
Xu,Jianping
;
Lumyong,Saisamorn
;
Hyde,Kevin D.
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浏览/下载：80/12
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提交时间：2022/04/02
Ancestral characters
Evolution
Host-recognition
Hyaline appressoria
Infection process
Melanized appressoria
Proto-appressoria
ACTIVATED PROTEIN-KINASE
UROMYCES-VICIAE-FABAE
INFECTION STRUCTURE FORMATION
SCANNING-ELECTRON-MICROSCOPY
BEAUVERIA-BASSIANA INFECTION
BOTRYTIS-CINEREA VIRULENCE
BIOLOGICAL-CONTROL AGENTS
WALL-DEGRADING ENZYMES
GREY MOLD FUNGUS
ENTOMOPATHOGENIC FUNGUS
Morphological and Phylogenetic Appraisal of Novel and Extant Taxa of Stictidaceae from Northern Thailand
期刊论文
JOURNAL OF FUNGI, 2021, 卷号: 7, 期号: 10, 页码: 880
作者:
Wei,De-Ping
;
Wanasinghe,Dhanushka N.
;
Gentekaki,Eleni
;
Thiyagaraja,Vinodhini
;
Lumyong,Saisamorn
;
Hyde,Kevin D.
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浏览/下载：88/30
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提交时间：2022/04/02
lichenization
new species
non-lichenized fungi
Ostropales
phylogeny
taxonomy
LICHENICOLOUS FUNGI
ASCOMYCOTA
OSTROPALES
STICTIS
PLACEMENT
KEY
ODONTOTREMATACEAE
CLASSIFICATION
ABSCONDITELLA
COMBINATIONS
Comprehensive Review of Tolypocladium and Description of a Novel Lineage from Southwest China
期刊论文
PATHOGENS, 2021, 卷号: 10, 期号: 11, 页码: 1389
作者:
Yu,Feng-Ming
;
Thilini Chethana,Kandawatte Wedaralalage
;
Wei,De-Ping
;
Liu,Jian-Wei
;
Zhao,Qi
;
Tang,Song-Ming
;
Li,Lu
;
Hyde,Kevin David
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Adobe PDF(1933Kb)
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浏览/下载：70/9
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提交时间：2022/04/02
new taxon
diversity
ecology
host shift
multi-gene
mycoparasite
taxonomic key
SP-NOV
PHYLOGENETIC-RELATIONSHIPS
CORDYCEPS
FUNGI
DIVERSIFICATION
PERFORMANCE
EVOLUTION
PATHOGEN
NUCLEAR
SOIL
