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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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中国科学院东亚植... [180]
共享文献 [167]
昆明植物所硕博研究... [71]
中国西南野生生物种... [70]
资源植物与生物技术... [34]
植物化学与西部植物... [15]
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李德铢 [57]
Sun Hang [49]
龚洵 [25]
伊廷双 [23]
许建初 [22]
高立志 [16]
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Funding Project
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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of the Royal Botanic Gardens Victoria","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Nucleotide%2Bsubstitution%2Brates&order=desc&&fq=dc.project.title_filter%3AFriends%5C+of%5C+the%5C+Royal%5C+Botanic%5C+Gardens%5C+Victoria"},{"jsname":"Glory Light International Fellowship for Chinese Botanists at Missouri Botanical Garden","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Nucleotide%2Bsubstitution%2Brates&order=desc&&fq=dc.project.title_filter%3AGlory%5C+Light%5C+International%5C+Fellowship%5C+for%5C+Chinese%5C+Botanists%5C+at%5C+Missouri%5C+Botanical%5C+Garden"},{"jsname":"Innovation Program of the Chinese Academy of Sciences[KSCX2-YW-Z-0926]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Nucleotide%2Bsubstitution%2Brates&order=desc&&fq=dc.project.title_filter%3AInnovation%5C+Program%5C+of%5C+the%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C%5BKSCX2%5C-YW%5C-Z%5C-0926%5C%5D"},{"jsname":"Kunming Institute of Botany, Chinese Academy of Sciences","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Nucleotide%2Bsubstitution%2Brates&order=desc&&fq=dc.project.title_filter%3AKunming%5C+Institute%5C+of%5C+Botany%2C%5C+Chinese%5C+Academy%5C+of%5C+Sciences"},{"jsname":"lastIndexed","jscount":"2020-10-27"}],"Funding Project","dc.project.title_filter")'>
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Evolutionary ecology of plant-plant interactions
期刊论文
出版物, 3111, 页码: 1-144
Authors:
Zuo Z(作者)
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Submit date：2017/07/19
Plastome phylogenomic study of Gentianeae (Gentianaceae): widespread gene tree discordance and its association with evolutionary rate heterogeneity of plastid genes
期刊论文
BMC Plant Biology, 2020, 卷号: 20, 期号: 1
Authors:
Zhang,Xu
;
Sun,Yanxia
;
Landis,Jacob B.
;
Lv,Zhenyu
;
Shen,Jun
;
Zhang,Huajie
;
Lin,Nan
;
Li,Lijuan
;
Sun,Jiao
;
Deng,Tao
;
Sun,Hang
;
Wang,Hengchang
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View/Download：14/0
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Submit date：2020/08/17
Plastome
Phylogenetic discordance
Gentianeae
Coalescence
Gene trees
Nucleotide substitution rates
Gene characteristics
Phylogenetic informativeness
Population Differentiation and Demographic History of the Cycas taiwaniana Complex (Cycadaceae) Endemic to South China as Indicated by DNA Sequences and Microsatellite Markers
期刊论文
FRONTIERS IN GENETICS, 2019, 卷号: 10, 页码: 15
Authors:
Wang, Xin-Hui
;
Li, Jie
;
Zhang, Li-Min
;
He, Zi-Wen
;
Mei, Qi-Ming
;
Gong, Xun
;
Jian, Shu-Guang
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Adobe PDF(1964Kb)
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View/Download：26/3
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Submit date：2020/03/18
Cycas taiwaniana complex
genetic diversity
phylogeographic structure
population dynamics
conservation
Evolutionary radiations of cushion plants on the Qinghai-Tibet Plateau: Insights from molecular phylogenetic analysis of two subgenera of Arenaria and Thylacospermum (Caryophyllaceae)
期刊论文
TAXON, 2019, 页码: 18
Authors:
Xu, Bo
;
Luo, Dong
;
Li, Zhi-Min
;
Sun, Hang
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View/Download：27/1
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Submit date：2020/03/18
cushion Arenaria
evolutionary radiations
molecular phylogeny
Qinghai-Tibet Plateau
Quaternary glaciation
Thylacospermum
Morphology and Multi-Gene Phylogeny Reveal Pestalotiopsis pinicola sp. nov. and a New Host Record of Cladosporium anthropophilum from Edible Pine (Pinus armandii) Seeds in Yunnan Province, China
期刊论文
PATHOGENS, 2019, 卷号: 8, 期号: 4, 页码: 18
Authors:
Tibpromma, Saowaluck
;
Mortimer, Peter E.
;
Karunarathna, Samantha C.
;
Zhan, Fangdong
;
Xu, Jianchu
;
Promputtha, Itthayakorn
;
Yan, Kai
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Submit date：2020/03/18
ascomycota
endophytic fungi
new taxon
saprobic fungi
taxonomy
weak pathogen
Evolutionary patterns of chimeric retrogenes in Oryza species
期刊论文
SCIENTIFIC REPORTS, 2019, 卷号: 9, 页码: 12
Authors:
Zhou, Yanli
;
Zhang, Chengjun
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View/Download：17/0
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Submit date：2020/03/02
Taxonomic and phylogenetic characterizations of Keissleriella bambusicola sp. nov. (Lentitheciaceae, Pleosporales) from Yunnan, China
期刊论文
PHYTOTAXA, 2019, 卷号: 423, 期号: 3, 页码: 129-144
Authors:
Jiang, Hong-Bo
;
Phookamsak, Rungtiwa
;
Doilom, Mingkwan
;
Mortimer, Peter E.
;
Xu, Jian-Chu
;
Lumyong, Saisamorn
;
Hyde, Kevin D.
;
Karunarathna, Samantha C.
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View/Download：22/9
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Submit date：2020/03/26
1 new species
bambusicolous fungi
Dothideomycetes
multi-gene phylogeny
sexual morph
Phylogenomic analysis reveals multiple evolutionary origins of selfing from outcrossing in a lineage of heterostylous plants
期刊论文
NEW PHYTOLOGIST, 2019, 卷号: 224, 期号: 3, 页码: 1290-1303
Authors:
Zhong, Li
;
Barrett, Spencer C. H.
;
Wang, Xin-Jia
;
Wu, Zhi-Kun
;
Sun, Hua-Ying
;
Li, De-Zhu
;
Wang, Hong
;
Zhou, Wei
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View/Download：49/8
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Submit date：2020/03/26
floral evolution
genetic diversity
heterostyly
homostyly
mating systems
phylogenomics
Primula
selfing
Vittaliana mangrovei Devadatha, Nikita, A.Baghela & VVSarma, gen. nov, sp. nov. (Phaeosphaeriaceae), from mangroves near Pondicherry (India), based on morphology and multigene phylogeny
期刊论文
CRYPTOGAMIE MYCOLOGIE, 2019, 卷号: 40, 期号: 7, 页码: 117-132
Authors:
Devadatha, Bandarupalli
;
Mehta, Nikita
;
Wanasinghe, Dhanushka N.
;
Baghela, Abhishek
;
Sarma, V. Venkateswara
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View/Download：27/3
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Submit date：2020/03/18
Pleosporales
Phaeosphaeriaceae
mangroves
marine fungi
new genus
new species
Plastid phylogenomics and biogeographic analysis support a trans-Tethyan origin and rapid early radiation of Cornales in the Mid-Cretaceous
期刊论文
MOLECULAR PHYLOGENETICS AND EVOLUTION, 2019, 卷号: 140, 页码: 16
Authors:
Fu, Chao-Nan
;
Mo, Zhi-Qiong
;
Yang, Jun-Bo
;
Ge, Xue-Jun
;
Li, De-Zhu
;
Xiang, Qiu-Yun (Jenny)
;
Gao, Lian-Ming
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View/Download：76/6
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Submit date：2019/12/20
Biogeography
Character coding
Cornales
Plastid genome
Phylogenomics
