Genomic insight into the divergence and adaptive potential of a forgotten landrace G. hirsutum L. purpurascens

文献类型： 外文期刊

第一作者： Nazir, Mian Faisal

作者： Nazir, Mian Faisal;He, Shoupu;Ahmed, Haris;Sarfraz, Zareen;Jia, Yinhua;Li, Hongge;Sun, Gaofei;Iqbal, Muhammad Shahid;Pan, Zhaoe;Du, Xiongming

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关键词： Gossypium purpurascens; Upland cotton; Genetic differentiation; G. hirsutum; Domestication

期刊名称：JOURNAL OF GENETICS AND GENOMICS （ 影响因子：4.275； 五年影响因子：5.223 ）

ISSN： 1673-8527

年卷期： 2021 年 48 卷 6 期

页码：

收录情况： SCI

摘要： Wild progenitors are an excellent source for strengthening the genetic basis and accumulation of desirable variation lost because of directional selection and adaptation in modern cultivars. Here, we re-evaluate a landrace of Gossypium hirsutum, formerly known as Gossypium purpurascens. Our study seeks to understand the genomic structure, variation, and breeding potential of this landrace, providing potential insights into the biogeographic history and genomic changes likely associated with domestication. A core set of accessions, including current varieties, obsolete accessions, G. purpurascens, and other geographical landraces, are subjected to genotyping along with multilocation phenotyping. Population fixation statistics suggests a marked differentiation between G. purpurascens and three other groups, emphasizing the divergent genomic behavior of G. purpurascens. Phylogenetic analysis establishes the primitive nature of G. purpurascens, identifying it as a vital source of functional variation, the inclusion of which in the upland cotton (cultivated G. hirsutum) gene pool may broaden the genetic basis of modern cultivars. Genome-wide association results indicate multiple loci associated with domestication regions corresponding to flowering and fiber quality. Moreover, the conserved nature of G. purpurascens can also provide insights into the evolutionary process of G. hirsutum. Copyright (C) 2021, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, and Genetics Society of China. Published by Elsevier Limited and Science Press. All rights reserved.

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