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dc.contributor.author | Wan, Tao![]() |
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dc.contributor.author | Liu, Zhiming![]() |
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dc.contributor.author | Leitch, Ilia J.![]() |
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dc.contributor.author | Xin, Haiping![]() |
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dc.contributor.author | Maggs-Kolling, Gillian![]() |
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dc.contributor.author | Gong, Yanbing![]() |
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dc.contributor.author | Li, Zhen![]() |
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dc.contributor.author | Marais, Eugene![]() |
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dc.contributor.author | Liao, Yiying![]() |
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dc.contributor.author | Dai, Can![]() |
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dc.contributor.author | Liu, Fan![]() |
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dc.contributor.author | Wu, Qijia![]() |
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dc.contributor.author | Song, Chi![]() |
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dc.contributor.author | Zhou, Yadong![]() |
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dc.contributor.author | Huang, Weichang![]() |
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dc.contributor.author | Jiang, Kai![]() |
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dc.contributor.author | Wang, Qi![]() |
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dc.contributor.author | Yang, Yong![]() |
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dc.contributor.author | Zhong, Zhixiang![]() |
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dc.contributor.author | Yang, Ming![]() |
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dc.contributor.author | Yan, Xue![]() |
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dc.contributor.author | Hu, Guangwan![]() |
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dc.contributor.author | Hou, Chen![]() |
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dc.contributor.author | Su, Yingjuan![]() |
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dc.contributor.author | Feng, Shixiu![]() |
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dc.contributor.author | Yang, Ji![]() |
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dc.contributor.author | Yan, Jijun![]() |
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dc.contributor.author | Chu, Jinfang![]() |
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dc.contributor.author | Chen, Fan![]() |
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dc.contributor.author | Ran, Jinhua![]() |
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dc.contributor.author | Wang, Xiaoquan![]() |
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dc.contributor.author | Van de Peer, Yves![]() |
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dc.contributor.author | Leitch, Andrew R.![]() |
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dc.contributor.author | Wang, Qingfeng![]() |
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dc.date.accessioned | 2022-02-04T11:17:33Z | |
dc.date.available | 2022-02-04T11:17:33Z | |
dc.date.issued | 2021 | |
dc.description.abstract | 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. | en_ZA |
dc.description.department | Biochemistry | en_ZA |
dc.description.department | Genetics | en_ZA |
dc.description.department | Microbiology and Plant Pathology | en_ZA |
dc.description.librarian | pm2022 | en_ZA |
dc.description.uri | http://www.nature.com/ncomms/index.html | en_ZA |
dc.identifier.citation | Wan, T., Liu, Z., Leitch, I.J. et al. The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts. Nature Communications 12, 4247 (2021). https://doi.org/10.1038/s41467-021-24528-4. | en_ZA |
dc.identifier.issn | 2041-1723 (online) | |
dc.identifier.other | 10.1038/s41467-021-24528-4 | |
dc.identifier.uri | http://hdl.handle.net/2263/83636 | |
dc.language.iso | en | en_ZA |
dc.publisher | Nature Research | en_ZA |
dc.rights | © The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License. | en_ZA |
dc.subject | Welwitschia genome | en_ZA |
dc.subject | Longevity | en_ZA |
dc.subject | Deserts | en_ZA |
dc.title | The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts | en_ZA |
dc.type | Article | en_ZA |