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Assembly and phylogenomic analysis of cotton mitochondrial genomes provide insights into the history of cotton evolution

引用

The Crop Journal 2023年第6期11卷 1782-1792页

作者： Yanlei Feng Yukang Wang Hejun Lu Jun Li Delara Akhter Fang Liu Ting Zhao Xingxing Shen Xiaobo Li James Whelan Tianzhen Zhang Jianping Hu Ronghui Pan College of Agriculture and Biotechnology&ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 310058/311215ZhejiangChina Zhejiang Laboratory Hangzhou 311121ZhejiangChina Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province School of Life SciencesWestlake UniversityHangzhou 310024ZhejiangChina Department of Genetics and Plant Breeding Sylhet Agricultural UniversitySylhet 3100Bangladesh State Key Laboratory of cotton Biology Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang 450000HenanChina Institute of Biology Westlake Institute for Advanced StudyHangzhou 310024ZhejiangChina College of Life Science Zhejiang UniversityHangzhou 310058ZhejiangChina Michigan State University Department of Energy Plant Research Laboratory and Plant Biology DepartmentEast LansingMI 48824USA

cotton is a major crop that provides the most important renewable textile fibers in the *** of the taxonomy and evolution of cotton species have received wide attentions,not only due to cotton’s economic value but also due to the fact that Gossypium is an ideal model system to study the origin,evolution,and cultivation of polyploid *** studies suggested the involvement of mitochondrial genome editing sites and copy number as well as mitochondrial functions in cotton fiber ***,with only a few mitogenomes assembled in the cotton genus Gossypium,our knowledge about their roles in cotton evolution and speciation is still *** close this gap,here we assembled 20 mitogenomes from 15 cotton species spanning all the cotton clades(A–G,K,and AD genomes)and 5 cotton relatives using short and long sequencing *** analyses uncovered a high level of mitochondrial gene sequence conservation,abundant sequence repeats and many insertions of foreign sequences,as well as extensive structural variations in cotton *** sequence repeats and foreign sequences caused significant mitogenome size inflation in Gossypium and its close relative Kokia in general,while there is no significant difference between the lint and fuzz cotton mitogenomes in terms of gene content,RNA editing,and gene expression ***,we further revealed the specific presence and expression of two novel mitochondrial open reading frames(ORFs)in lint-fiber cotton ***,these structural features and novel ORFs help us gain valuable insights into the history of cotton evolution and polyploidization and the origin of species producing long lint fibers from a mitogenomic perspective.

关键词： cotton evolution cotton phylogeny Lint fiber cotton Mitochondrial genome Mitochondrial genes

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