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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... [209]
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昆明植物所硕博研究... [62]
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许建初 [41]
杨祝良 [40]
李德铢 [20]
Sun Hang [20]
Yang Jing [15]
赵琪 [13]
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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
Authors:
Jun Wen
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Submit date：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
Boletes clarified
期刊论文
出版物, 3111, 期号: 0, 页码: 1-38
Authors:
David Arora
;
Jonathan L. Frank
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Submit date：2017/07/24
Appendiculati
Boletaceae
Butter Boletes
Butyriboletus
Molecular phylogenetics
New Genus
New Species
Taxonomy
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
Use of Substitute Species in Conservation Biology
期刊论文
Conservation Biology, 3111, 期号: 0, 页码: 1821-1826
Authors:
TIM CARO
;
JOHN EADIE
;
ANDREW SIH
Adobe PDF(172Kb)
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Submit date：2017/07/24
Looking for the undiscovered asexual taxa: case studies from lesser studied life modes and habitats
期刊论文
MYCOSPHERE, 2021, 卷号: 12, 期号: 1, 页码: 1186-1229
Authors:
Wijayawardene,N. N.
;
Phillips,A. J. L.
;
Tibpromma,S.
;
Dai,D. Q.
;
Selbmann,L.
;
Monteiro,J. S.
;
Aptroot,A.
;
Flakus,A.
;
Rajeshkumar,K. C.
;
Coleine,C.
;
Pereira,D. C.
;
Fan,X.
;
Zhang,L.
;
Maharachchikumbura,S. S. N.
;
Souza,M. F.
;
Kukwa,M.
;
Suwannarach,N.
;
Rodriguez-Flakus,P.
;
Ashtekar,N.
;
Dauner,L.
;
Tang,L. Z.
;
Jin,X. C.
;
Karunarathna,S. C.
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Submit date：2022/04/02
7 new taxa
Ascomycota
DNA sequences
fungal diversity
habitat
life modes
phylogeny
taxonomy
ROCK-INHABITING FUNGI
LICHENICOLOUS FUNGI
SP-NOV
ENDOPHYTIC FUNGI
BLACK FUNGI
PYRENOCARPOUS LICHENS
PHYLOGENETIC ANALYSIS
INCERTAE SEDIS
SEQUENCE DATA
SP. NOV.
Integrative approaches for species delimitation in Ascomycota
期刊论文
FUNGAL DIVERSITY, 2021, 卷号: 109, 期号: 1, 页码: 155-179
Authors:
Maharachchikumbura,Sajeewa S. N.
;
Chen,Yanpeng
;
Ariyawansa,Hiran A.
;
Hyde,Kevin D.
;
Haelewaters,Danny
;
Perera,Rekhani H.
;
Samarakoon,Milan C.
;
Wanasinghe,Dhanushka N.
;
Bustamante,Danilo E.
;
Liu,Jian-Kui
;
Lawrence,Daniel P.
;
Cheewangkoon,Ratchadawan
;
Stadler,Marc
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Submit date：2022/04/02
Ascomycetes
Phylogenetics
Species concept
Systematics
DNA-SEQUENCE DATA
FUSARIUM-SOLANI
MUSCODOR-ALBUS
FUNGAL ENDOPHYTES
DIVERGENCE TIMES
TREE ESTIMATION
EVOLUTION
GENUS
NAMES
PHYLOGENY
Biphasic taxonomic approaches for generic relatedness and phylogenetic relationships of Teichosporaceae
期刊论文
FUNGAL DIVERSITY, 2021, 卷号: 110, 期号: 1, 页码: 199-241
Authors:
Tennakoon,Danushka S.
;
Jeewon,Rajesh
;
Thambugala,Kasun M.
;
Gentekaki,Eleni
;
Wanasinghe,Dhanushka N.
;
Promputtha,Itthayakorn
;
Hyde,Kevin D.
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Submit date：2022/04/02
1 new species
Dothideomycetes
Multi-locus phylogeny
Pleosporales
Sexual morph
Taxonomy
MULTIGENE PHYLOGENY
SP-NOV
FUNGI
LOPHIOSTOMATACEAE
PLEOSPORALES
MISTURATOSPHAERIA
CLASSIFICATION
SYSTEMATICS
ASCOMYCOTA
OUTLINE
Morphological and phylogenetic characterization of fungi within Bambusicolaceae: introducing two new species from the Greater Mekong Subregion
期刊论文
MYCOLOGICAL PROGRESS, 2021, 卷号: 20, 期号: 5, 页码: 721-732
Authors:
Monkai,Jutamart
;
Wanasinghe,Dhanushka N.
;
Jeewon,Rajesh
;
Promputtha,Itthayakorn
;
Phookamsak,Rungtiwa
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View/Download：19/0
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Submit date：2022/04/02
Bambusicola
Dothideomycetes
Fungal taxonomy
Palmiascoma
Pleosporales
NORTHERN THAILAND
BAMBOO
YUNNAN
NOV
PLEOSPORALES
DIDYMOSPHAERIACEAE
DIATRYPACEAE
MASSARINEAE
XYLARIALES
DIVERSITY
Delimiting species in Basidiomycota: a review
期刊论文
FUNGAL DIVERSITY, 2021, 卷号: 109, 期号: 1, 页码: 181-237
Authors:
Cao,Bin
;
Haelewaters,Danny
;
Schoutteten,Nathan
;
Begerow,Dominik
;
Boekhout,Teun
;
Giachini,Admir J.
;
Gorjon,Sergio P.
;
Gunde-Cimerman,Nina
;
Hyde,Kevin D.
;
Kemler,Martin
;
Li,Guo-Jie
;
Liu,Dong-Mei
;
Liu,Xin-Zhan
;
Nuytinck,Jorinde
;
Papp,Viktor
;
Savchenko,Anton
;
Savchenko,Kyryll
;
Tedersoo,Leho
;
Theelen,Bart
;
Thines,Marco
;
Tomsovsky,Michal
;
Toome-Heller,Merje
;
Uron,Judith P.
;
Verbeken,Annemieke
;
Vizzini,Alfredo
;
Yurkov,Andrey M.
;
Zamora,Juan Carlos
;
Zhao,Rui-Lin
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Submit date：2022/04/02
Biological species concept
Morphological species concept
Phylogenetic species concept
Taxonomy
INTERNAL TRANSCRIBED SPACER
FRAGMENT-LENGTH-POLYMORPHISMS
FLIGHT MASS-SPECTROMETRY
RUST FUNGI PUCCINIALES
NUCLEAR RIBOSOMAL DNA
MOLECULAR PHYLOGENETIC-RELATIONSHIPS
HEBELOMA-CRUSTULINIFORME COMPLEX
ASSESSING NATURAL RELATIONSHIPS
DESORPTION IONIZATION-TIME
MULTIPLE GENE GENEALOGIES
Cyanescent Gyroporus (Gyroporaceae, Boletales) from China
期刊论文
MYCOKEYS, 2021, 期号: 81, 页码: 165-183
Authors:
Huang,Cong
;
Zhang,Ming
;
Wu,Xing-Liang
;
Wu,Gang
;
Xu,Jian-Ping
;
Yang,Zhu L.
;
Li,Yan-Chun
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View/Download：5/0
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Submit date：2022/04/02
Boletes
distribution
new taxa
phylogeny
taxonomy
DIVERSITY
