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A reference-grade genome assembly for Gossypium bickii and insights into its genome evolution and formation of pigment glands and gossypol

文献类型： 外文期刊

作者： Sheng, Kuang 1 ; Sun, Yue 1 ; Liu, Meng 2 ; Cao, Yuefen 1 ; Han, Yifei 1 ; Li, Cheng 3 ; Muhammad, Uzair 1 ; Daud, Muhammad Khan 4 ; Wang, Wanru 1 ; Li, Huazu 1 ; Samrana, Samrana 1 ; Hui, Yixuan 1 ; Zhu, Shuijin 1 ; Chen, Jinhong 1 ; Zhao, Tianlun 1 ;

作者机构： 1.Zhejiang Univ, Inst Crop Sci, Coll Agr & Biotechnol, Hangzhou, Peoples R China

2.Novogene Bioinformat Inst, Beijing, Peoples R China

3.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr,Genome Anal Lab,M, Shenzhen, Peoples R China

4.Kohat Univ Sci & Technol, Dept Biotechnol & Genet Engn, Kohat, Pakistan

5.Zhejiang Univ, Hainan Inst, Sanya, Peoples R China

关键词： Gossypium bickii; genome; evolution; gossypol; pigment glands

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： 2023 年 4 卷 1 期

页码：

收录情况： SCI

摘要： The pigment gland is a morphological characteristic of Gossypium and its related genera. Gossypium bickii (G1) is characterized by delayed pigment gland morphogenesis in the cotyledons. In this study, a reference -grade genome of G1 was generated, and comparative genomics analysis showed that G1 was closest to Gossypium australe (G2), followed by A-and D-genome species. Two large fragment translocations in chro-mosomes 5 and 13 were detected between the G genome and other Gossypium genomes and were unique to the G1 and G2 genomes. Compared with the G2 genome, two large fragment inversions in chromosomes 12 and 13 were detected in G1. According to the phylogeny, divergence time, and similarity analysis of nuclear and chloroplast genomes, G1 was formed by hybridization between Gossypium sturtianum (C1) and a common ancestor of G2 and Gossypium nelsonii (G3). The coordinated expression patterns of pigment gland formation (GoPGF) and gossypol biosynthesis genes in G1 were verified to be consistent with its phenotype, and nine genes that were related to the process of pigment gland formation were identified. A novel gene, GbiCYP76B6, regulated by GoPGF, was found to affect gossypol biosynthesis. These findings offer insights into the origin and evolution of G1 and its mechanism of pigment gland formation and gossypol biosynthesis.

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