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题名: Multigene molecular phylogenetics reveals true morels (Morchella) are especially species-rich in China
作者: Du, Xi-Hui1, 3; Zhao, Qi1; O'Donnell, Kerry2; Rooney, Alejandro P.2; null(杨祝良)1
刊名: FUNGAL GENETICS AND BIOLOGY
关键词: Ascomycota ; Biodiversity ; Conservation biology ; DNA sequence ; Fungi ; Range evolution
英文摘要: The phylogenetic diversity of true morels (Morchella) in China was estimated by initially analyzing nuclear ribosomal internal transcribed spacer (ITS) rDNA sequences from 361 specimens collected in 21 provinces during the 2003-2011 growing seasons, together with six collections obtained on loan from three Chinese herbaria. Based on the results of this preliminary screen, 40 Esculenta Clade (yellow morels) and 30 Elata Clade (black morels) were chosen to represent the full range of phylogenetic diversity sampled. To investigate their species limits, we generated DNA sequences from portions of three protein-coding genes (RPB1, RPB2 and EF-1 alpha) and domains D1 and D2 of the nuclear large subunit (LSU) rDNA for all 70 collections. To fully assess evolutionary relationships, previously published multilocus DNA sequence data representing all known Morchella species was included in this study. Phylogenetic analyses employing maximum parsimony and maximum likelihood frameworks resolved 30 species in China compared with 22 in Europe and 19 within North America. Eleven novel phylogenetically distinct species were discovered in China, including two species within the Elata Clade and nine within the Esculenta Clade. Of the 30 species in China, 20 appear to be endemic, nine were also represented in Europe, and four putatively fire-adapted species have disjunct distributions in China, Europe and western North America. Although the diversification time estimates place the Esculenta Clade in China as early as the late Cretaceous and the Elata Clade by the early Oligocene, 27 of the 30 species evolved between the middle Miocene 12 Mya and present. (C) 2012 Elsevier Inc. All rights reserved.
出版日期: 2012-06-01
卷号: 49, 期号:6, 页码:455-469
DOI标识: 10.1016/j.fgb.2012.03.006
语种: 英语
收录类别: SCI
学科分类: Genetics & Heredity ; Mycology
ISSN号: 1087-1845
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/17635
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650201, Yunnan Province, Peoples R China
2.ARS, Bacterial Foodborne Pathogens & Mycol Res Unit, Natl Ctr Agr Utilizat Res, USDA, Peoria, IL 61604 USA
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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