气候变化领域集成服务门户(CCPortal): The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts

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DOI	10.1038/s41467-021-24528-4
	The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts
	Wan T.; Liu Z.; Leitch I.J.; Xin H.; Maggs-Kölling G.; Gong Y.; Li Z.; Marais E.; Liao Y.; Dai C.; Liu F.; Wu Q.; Song C.; Zhou Y.; Huang W.; Jiang K.; Wang Q.; Yang Y.; Zhong Z.; Yang M.; Yan X.; Hu G.; Hou C.; Su Y.; Feng S.; Yang J.; Yan J.; Chu J.; Chen F.; Ran J.; Wang X.; Van de Peer Y.; Leitch A.R.; Wang Q.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The gymnosperm Welwitschia mirabilis belongs to the ancient, enigmatic gnetophyte lineage. It is a unique desert plant with extreme longevity and two ever-elongating leaves. We present a chromosome-level assembly of its genome (6.8 Gb/1 C) together with methylome and transcriptome data to explore its astonishing biology. We also present a refined, high-quality assembly of Gnetum montanum to enhance our understanding of gnetophyte genome evolution. The Welwitschia genome has been shaped by a lineage-specific ancient, whole genome duplication (~86 million years ago) and more recently (1-2 million years) by bursts of retrotransposon activity. High levels of cytosine methylation (particularly at CHH motifs) are associated with retrotransposons, whilst long-term deamination has resulted in an exceptionally GC-poor genome. Changes in copy number and/or expression of gene families and transcription factors (e.g. R2R3MYB, SAUR) controlling cell growth, differentiation and metabolism underpin the plant’s longevity and tolerance to temperature, nutrient and water stress. © 2021, The Author(s).
语种	英语
scopus关键词	cytosine; transcription factor; transcriptome; rain; transcriptome; desert; genome; gymnosperm; longevity; metabolism; plant; Article; cell differentiation; cell growth; cell metabolism; chromosome; copy number variation; desert; gene expression; Gnetophyta; Gnetum; Gnetum montanum; gymnosperm; longevity; methylation; methylome; nonhuman; nutrient; plant genome; retroposon; sequence analysis; water stress; Welwitschia mirabilis; Africa; Cycadophyta; desert climate; DNA methylation; DNA sequence; genetics; geography; meristem; molecular evolution; molecular genetics; plant leaf; species difference; Gnetum montanum; Gymnospermae; Welwitschia; Welwitschia mirabilis; Africa; Cycadopsida; Desert Climate; DNA Methylation; Evolution, Molecular; Genome, Plant; Geography; Meristem; Molecular Sequence Annotation; Plant Leaves; Rain; Sequence Analysis, DNA; Species Specificity; Transcriptome
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251385
作者单位	Core Botanical Gardens/Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China; Sino-Africa Joint Research Centre, Chinese Academy of Sciences, Wuhan, China; Key Laboratory of Southern Subtropical Plant Diversity, FairyLake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, China; Royal Botanic Gardens, Kew, Surrey, United Kingdom; Gobabeb Research and Training Centre, Walvis Bay, Namibia; State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China; Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium; Center for Plant Systems Biology, VIB, Ghent, Belgium; School of Resources and Environmental Science, Hubei University, Wuhan, China; Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China; Seqhealth Technology, Wuhan, China; Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China; Shanghai Key Laboratory of P...
推荐引用方式 GB/T 7714	Wan T.,Liu Z.,Leitch I.J.,et al. The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts[J],2021,12(1).
APA	Wan T..,Liu Z..,Leitch I.J..,Xin H..,Maggs-Kölling G..,...&Wang Q..(2021).The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts.Nature Communications,12(1).
MLA	Wan T.,et al."The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts".Nature Communications 12.1(2021).