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Chromosome-level reference genome of tetraploid Isoetes sinensis provides insights into evolution and adaption of lycophytes

文献类型: 外文期刊

作者: Cui, Jinteng 1 ; Zhu, Yunke 2 ; Du, Hai 4 ; Liu, Zhenhua 5 ; Shen, Siqian 1 ; Wang, Tongxin 1 ; Cui, Wenwen 1 ; Zhang, Rong 6 ; Jiang, Sanjie 7 ; Wu, Yanmin 2 ; Gu, Xiaofeng 2 ; Yu, Hao 8 ; Liang, Zhe 2 ;

作者机构: 1.Beijing Agr Univ, Coll Landscape Architecture, Beijing 102206, Peoples R China

2.Chinese Acad Agr Sci, Biotechnol Res Inst, Beijing 100081, Peoples R China

3.Glbizzia Biosci, Beijing 102699, Peoples R China

4.Southwest Univ, Coll Agron & Biotechnol, Chongqing 400715, Peoples R China

5.BiosmartSeek, Wuhan 430072, Peoples R China

6.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Beijing 100068, Peoples R China

7.BGI Genom, Shenzhen 518083, Peoples R China

8.Natl Univ Singapore, Dept Biol Sci, Singapore 117543, Singapore

关键词: Isoetes sinensis; genome; evolution; Lycophyta; polyploid; environmental stress

期刊名称:GIGASCIENCE ( 影响因子:9.2; 五年影响因子:9.3 )

ISSN: 2047-217X

年卷期: 2023 年 12 卷

页码:

收录情况: SCI

摘要: Background: The Lycophyta species are the extant taxa most similar to early vascular plants that were once abundant on Earth. However, their distribution has greatly diminished. So far, the absence of chromosome-level assembled lycophyte genomes has hindered our understanding of evolution and environmental adaption of lycophytes. Findings: We present the reference genome of the tetraploid aquatic quillwort, Isoetes sinensis, a lycophyte. This genome represents the first chromosome-level assembled genome of a tetraploid seed-free plant. Comparison of genomes between I. sinensis and Isoetes-taiwanensis revealed conserved and different genomic features between diploid and polyploid lycophytes. Comparison of the I. sinensis genome with those of other species representing the evolutionary lineages of green plants revealed the inherited genetic tools for transcriptional regulation and most phytohormones in I. sinensis. The presence and absence of key genes related to development and stress responses provide insights into environmental adaption of lycophytes. Conclusions: The high-quality reference genome and genomic analysis presented in this study are crucial for future genetic and environmental studies of not only I. sinensis but also other lycophytes.

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