Evolution and Stress Responses of Gossypium hirsutum SWEET Genes

文献类型： 外文期刊

第一作者： Wei Li;;Zhongying Ren;;Zhenyu Wang

作者： Wei Li;Zhongying Ren;Zhenyu Wang;Ma, Xiongfeng;Yang, Daigang;Kuan Sun;Xiaoyu Pei;Yangai Liu;Kunlun He;Fei Zhang;Chengxiang Song;Xiaojian Zhou;Wensheng Zhang;Xiongfeng Ma;Daigang Yang

作者机构：

关键词： cotton; SWEET; evolution; stress response; artificial selection

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2018 年 19 卷 3 期

页码：

收录情况： SCI

摘要： The SWEET (sugars will eventually be exported transporters) proteins are sugar efflux transporters containing the MtN3 saliva domain, which affects plant development as well as responses to biotic and abiotic stresses. These proteins have not been functionally characterized in the tetraploid cotton, Gossypium hirsutum, which is a widely cultivated cotton species. In this study, we comprehensively analyzed the cotton SWEET gene family. A total of 55 putative G. hirsutum SWEET genes were identified. The GhSWEET genes were classified into four clades based on a phylogenetic analysis and on the examination of gene structural features. Moreover, chromosomal localization and an analysis of homologous genes in Gossypium arboreum, Gossypium raimondii, and G. hirsutum suggested that a whole-genome duplication, several tandem duplications, and a polyploidy event contributed to the expansion of the cotton SWEET gene family, especially in Clade III and IV. Analyses of cis-acting regulatory elements in the promoter regions, expression profiles, and artificial selection revealed that the GhSWEET genes were likely involved in cotton developmental processes and responses to diverse stresses. These findings may clarify the evolution of G. hirsutum SWEET gene family and may provide a foundation for future functional studies of SWEET proteins regarding cotton development and responses to abiotic stresses.

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