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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
Adobe PDF(7233Kb)
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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
Boletes clarified
期刊论文
出版物, 3111, 期号: 0, 页码: 1-38
作者:
David Arora
;
Jonathan L. Frank
Adobe PDF(1003Kb)
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浏览/下载：247/1
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提交时间：2017/07/24
Appendiculati
Boletaceae
Butter Boletes
Butyriboletus
Molecular phylogenetics
New Genus
New Species
Taxonomy
Reviewing the world's edible mushroom species: A new evidence-based classification system
期刊论文
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY, 2021
作者:
Li,Huili
;
Tian,Yang
;
Menolli Jr,Nelson
;
Ye,Lei
;
Karunarathna,Samantha C.
;
Perez-Moreno,Jesus
;
Rahman,Mohammad Mahmudur
;
Rashid,Md Harunur
;
Phengsintham,Pheng
;
Rizal,Leela
;
Kasuya,Taiga
;
Lim,Young Woon
;
Dutta,Arun Kumar
;
Khalid,Abdul Nasir
;
Le Thanh Huyen
;
Balolong,Marilen Parungao
;
Baruah,Gautam
;
Madawala,Sumedha
;
Thongklang,Naritsada
;
Hyde,Kevin D.
;
Kirk,Paul M.
;
Xu,Jianchu
;
Sheng,Jun
;
Boa,Eric
;
Mortimer,Peter E.
Adobe PDF(1089Kb)
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浏览/下载：143/57
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提交时间：2023/09/08
Niche overlap and divergence times support niche conservatism in eastern Asia-Eastern North America disjunct plants
期刊论文
GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2021, 卷号: 30, 期号: 10, 页码: 1990-2003
作者:
Yin,Xue
;
Jarvie,Scott
;
Guo,Wen-Yong
;
Deng,Tao
;
Mao,Lingfeng
;
Zhang,Minhua
;
Chu,Chengjin
;
Qian,Hong
;
Svenning,Jens-Christian
;
He,Fangliang
Adobe PDF(1818Kb)
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浏览/下载：119/59
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提交时间：2022/04/02
divergence times
EAS-ENA plant disjunction
ensemble ecological niche models
niche conservatism
niche overlap
pairwise species
SPECIES DISTRIBUTION MODELS
SAMPLE-SIZE
PSEUDO-ABSENCES
VASCULAR PLANTS
EVOLUTION
ECOLOGY
DIVERSITY
DISTRIBUTIONS
ACCURACY
ANGIOSPERMS
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.
Adobe PDF(3951Kb)
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浏览/下载：87/30
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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
Colletotrichum dracaenigenum, a new species on Dracaena fragrans
期刊论文
PHYTOTAXA, 2021, 卷号: 491, 期号: 2, 页码: 143-157
作者:
Chaiwan,Napalai
;
Tibpromma,Saowaluck
;
Jayawardena,Ruvishika S.
;
Mapook,Ausana
;
Wanasinghe,Dhanushka N.
;
Mortimer,Peter E.
;
Lumyong,Saisamorn
;
Hyde,Kevin D.
浏览
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Adobe PDF(5895Kb)
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浏览/下载：65/19
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提交时间：2022/04/02
Morphology
Multi-locus
Novel species
Phylogeny
Taxonomy
FUNGI
DIVERSITY
SPP.
ANTHRACNOSE
FAMILIES
GENERA
Patterns of phylogenetic beta diversity measured at deep evolutionary histories across geographical and ecological spaces for angiosperms in China
期刊论文
JOURNAL OF BIOGEOGRAPHY, 2021, 卷号: 48, 期号: 4, 页码: 773-784
作者:
Qian,Hong
;
Jin,Yi
;
Leprieur,Fabien
;
Wang,Xianli
;
Deng,Tao
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Adobe PDF(1074Kb)
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浏览/下载：102/33
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提交时间：2022/04/02
Chinese flora
environmental gradient
flowering plants
latitudinal gradient
phylogenetic beta diversity
1ST FOSSIL RECORD
VASCULAR PLANTS
SPECIES RICHNESS
ASIAN MONSOON
COMMUNITY STRUCTURE
NICHE CONSERVATISM
EASTERN ASIA
SCALE
TERRESTRIAL
ENVIRONMENT
Kaziboletus, a new boletoid genus of Boletaceae associated with Shorea robusta in Bangladesh
期刊论文
MYCOLOGICAL PROGRESS, 2021, 卷号: 20, 期号: 9, 页码: 1145-1156
作者:
Hosen,Md Iqbal
;
Yang,Zhu L.
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Adobe PDF(10526Kb)
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浏览/下载：47/7
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提交时间：2022/04/02
Asian distribution
Dipterocarpaceae
Leccinoideae
Tropical bolete
BOLETALES
TAXA
PHYLLOPORUS
OCTAVIANIA
GENERA
ASIA
Plastome phylogenomics of Cephalotaxus (Cephalotaxaceae) and allied genera
期刊论文
ANNALS OF BOTANY, 2021, 卷号: 127, 期号: 5, 页码: 697-708
作者:
Ji,Yunheng
;
Liu,Changkun
;
Landis,Jacob B.
;
Deng,Min
;
Chen,Jiahui
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Adobe PDF(2975Kb)
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浏览/下载：74/17
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提交时间：2022/04/02
Gymnosperm
Cephalotaxaceae
Taxaceae
phylogeny
molecular dating
taxonomic delineation
recent speciation
QUANTITATIVE RECONSTRUCTION
PHYLOGENETIC-RELATIONSHIPS
EVOLUTIONARY HISTORY
MOLECULAR PHYLOGENY
SOUTHWEST CHINA
TAXACEAE
FLORA
CHLOROPLAST
SEQUENCE
CLIMATE
Fossil fruits of Firmiana and Tilia from the middle Miocene of South Korea and the efficacy of the Bering land bridge for the migration of mesothermal plants
期刊论文
PLANT DIVERSITY, 2021, 卷号: 43, 期号: 6, 页码: 480-491
作者:
Jia,Lin-Bo
;
Nam,Gi-Soo
;
Su,Tao
;
Stull,Gregory W.
;
Li,Shu-Feng
;
Huang,Yong-Jiang
;
Zhou,Zhe-Kun
Adobe PDF(31764Kb)
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浏览/下载：93/18
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提交时间：2022/04/02
8 December 2020
Asia
Bering land bridge
Biogeography
Middle Miocene
Malvaceae
NORTH-AMERICA
EASTERN ASIA
CLIMATE
PATTERNS
GRADIENTS
EVOLUTION
MALVACEAE
EURASIA
BRACTS
EUROPE
