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A genome for gnetophytes and early evolution of seed plants

文献类型：期刊论文

作者Wan, Tao2,3; Liu, Zhi-Ming4; Li, Ling-Fei2; Leitch, Andrew R.5; Leitch, Ilia J.6; Lohaus, Rolf7,8; Liu, Zhong-Jian9,10; Xin, Hai-Ping3,11; Gong, Yan-Bing12; Liu, Yang2
刊名NATURE PLANTS
出版日期2018-02-01
卷号4期号:2页码:82-89
ISSN号2055-026X
DOI10.1038/s41477-017-0097-2
英文摘要Gnetophytes are an enigmatic gymnosperm lineage comprising three genera, Gnetum, Welwitschia and Ephedra, which are morphologically distinct from all other seed plants. Their distinctiveness has triggered much debate as to their origin, evolution and phylogenetic placement among seed plants. To increase our understanding of the evolution of gnetophytes, and their relation to other seed plants, we report here a high-quality draft genome sequence for Gnetum montanum, the first for any gnetophyte. By using a novel genome assembly strategy to deal with high levels of heterozygosity, we assembled >4 Gb of sequence encoding 27,491 protein-coding genes. Comparative analysis of the G. montanum genome with other gymnosperm genomes unveiled some remarkable and distinctive genomic features, such as a diverse assemblage of retrotransposons with evidence for elevated frequencies of elimination rather than accumulation, considerable differences in intron architecture, including both length distribution and proportions of (retro) transposon elements, and distinctive patterns of proliferation of functional protein domains. Furthermore, a few gene families showed Gnetum-specific copy number expansions (for example, cellulose synthase) or contractions (for example, Late Embryogenesis Abundant protein), which could be connected with Gnetum's distinctive morphological innovations associated with their adaptation to warm, mesic environments. Overall, the G. montanum genome enables a better resolution of ancestral genomic features within seed plants, and the identification of genomic characters that distinguish Gnetum from other gymnosperms.
资助项目Novogene Bioinformatics Institute, Beijing, China[NHT140016] ; Novogene Bioinformatics Institute, Beijing, China[NVT140016004] ; Scientific Project of Shenzhen Urban Administration[201519] ; Innovation of Science and Technology Commission of Shenzhen[JSGG20140515164852417] ; Sino-Africa Joint Research Center[SAJL201607] ; Ghent University[01MR0310W] ; European Union Seventh Framework Programme under European Research Council[322739-DOUBLEUP]
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000425119600012
出版者NATURE PUBLISHING GROUP
源URL[http://202.127.146.157/handle/2RYDP1HH/3796]  
专题中国科学院武汉植物园
通讯作者Wang, Qing-Feng; Van de Peer, Yves; Zhang, Jin-Bo; Wang, Xiao-Ming
作者单位1.Univ Pretoria, Genom Res Inst, Pretoria, South Africa
2.Shenzhen & Chinese Acad Sci, Fairy Lake Bot Garden, Key Lab Southern Subtrop Plant Divers, Shenzhen, Peoples R China
3.Chinese Acad Sci, Sinoafrica Joint Res Ctr, Wuhan, Hubei, Peoples R China
4.Novogene Bioinformat Inst, Beijing, Peoples R China
5.Queen Mary Univ London, Sch Biol & Chem Sci, London, England
6.Royal Bot Gardens, Jodrell Lab, Richmond, England
7.Univ Ghent, Dept Plant Biotechnol & Bioinformat, Ghent, Belgium
8.Ctr Plant Syst Biol VIB, Ghent, Belgium
9.Natl Orchid Conservat Ctr China, Shenzhen Key Lab Orchid Conservat & Utilizat, Shenzhen, Peoples R China
10.Orchid Conservat & Res Ctr, Shenzhen, Peoples R China
推荐引用方式
GB/T 7714		 Wan, Tao,Liu, Zhi-Ming,Li, Ling-Fei,et al. A genome for gnetophytes and early evolution of seed plants[J]. NATURE PLANTS,2018,4(2):82-89.
APA Wan, Tao.,Liu, Zhi-Ming.,Li, Ling-Fei.,Leitch, Andrew R..,Leitch, Ilia J..,...&Wang, Xiao-Ming.(2018).A genome for gnetophytes and early evolution of seed plants.NATURE PLANTS,4(2),82-89.
MLA Wan, Tao,et al."A genome for gnetophytes and early evolution of seed plants".NATURE PLANTS 4.2(2018):82-89.

入库方式： OAI收割

来源：武汉植物园

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