文献类型： 外文期刊

作者： Xu, Yanchao ¹ ; Wei, Yangyang ³ ; Zhou, Zhongli ¹ ; Cai, Xiaoyan ¹ ; Boden, Scott A. ⁵ ; Umer, Muhammad Jawad ¹ ; Safdar, Luqman B. ⁵ ; Liu, Yuling ³ ; Jin, Dingsha ⁶ ; Hou, Yuqing ¹ ; Wang, Yuhong ¹ ; Wall, Sarah Brooke ⁷ ; Wang, Kunbo ¹ ; Yu, Shuxun ¹ ; Zhang, Baohong ⁷ ; Peng, Renhai ³ ; Liu, Fang ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Cotton Res, Natl Key Lab Cotton Biobreeding & Integrated Utili, Anyang 455000, Peoples R China

2.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 40070, Peoples R China

3.Anyang Inst Technol, Coll Biol & Food Engn, Anyang 455000, Peoples R China

4.Chinese Acad Agr Sci, Natl Nanfan Res Inst Sanya, Sanya 572024, Peoples R China

5.Univ Adelaide, Sch Agr Food & Wine, Adelaide, SA 5005, Australia

6.Hainan Acad Agr Sci, Sanya Inst, Sanya 572000, Peoples R China

7.East Carolina Univ, Dept Biol, Greenville, NC 27858 USA

8.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450001, Peoples R China

关键词： cotton speciation; Gossypium genus; incomplete lineage sorting; ILS; phylogenetic analysis; gene tree resolution

期刊名称：PLANT COMMUNICATIONS （ 影响因子：10.5； 五年影响因子：10.5 ）

ISSN： 2590-3462

年卷期： 2024 年 5 卷 2 期

页码：

收录情况： SCI

摘要： Cotton (Gossypium) stands as a crucial economic crop, serving as the primary source of natural fiber for the textile sector. However, the evolutionary mechanisms driving speciation within the Gossypium genus remain unresolved. In this investigation, we leveraged 25 Gossypium genomes and introduced four novel assemblies-G. harknessii, G. gossypioides, G. trilobum, and G. klotzschianum (Gklo)-to delve into the speciation history of this genus. Notably, we encountered intricate phylogenies potentially stemming from introgression. These complexities are further compounded by incomplete lineage sorting (ILS), a factor likely to have been instrumental in shaping the swift diversification of cotton. Our focus subsequently shifted to the rapid radiation episode during a concise period in Gossypium evolution. For a recently diverged lineage comprising G. davidsonii, Gklo, and G. raimondii, we constructed a finely detailed ILS map. Intriguingly, this analysis revealed the non-random distribution of ILS regions across the reference Gklo genome. Moreover, we identified signs of robust natural selection influencing specific ILS regions. Noteworthy variations pertaining to speciation emerged between the closely related sister species Gklo and G. davidsonii. Approximately 15.74% of speciation structural variation genes and 12.04% of speciation-associated genes were estimated to intersect with ILS signatures. These findings enrich our understanding of the role of ILS in adaptive radiation, shedding fresh light on the intricate speciation history of the Gossypium genus.