文献类型： 外文期刊
作者： Zhang, Sujun 1 ; Chen, Jie 2 ; Jiang, Tao 3 ; Wang, Haitao 1 ; Cai, Xiao 1 ; Liu, Cunjing 1 ; Tang, Liyuan 1 ; Li, Xinghe 1 ; Sun, Yaqian 3 ; Zhang, Jianhong 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Inst Cotton, Key Lab Biol & Genet Improvement Cotton Huanghuaih, Shijiazhuang 050051, Hebei, Peoples R China
2.Yazhouwan Natl Lab, Sanya 572024, Hainan, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Inst Cash Crops, Shijiazhuang 050051, Hebei, Peoples R China
关键词： Cotton; Red-spot-petal; MYB-encoding gene; Glutathione S transferase gene; Glycosyl-transferase gene
期刊名称：CROP JOURNAL （ 影响因子：5.6； 五年影响因子：6.0 ）
ISSN： 2095-5421
年卷期： 2025 年 13 卷 3 期
页码：
收录情况： SCI
摘要： Red petal spots are beneficial for attracting cotton pollinators and producing hybrid seeds, and the anthocyanin pathway is generally regarded as a metabolic cause of petal coloration. The current study identified an MYB-encoding gene (Gar07G09390, GaMYB) as a candidate gene involved in cotton coloration by map-based cloning, and this MYB could positively regulate a candidate glutathione S transferase gene (Gar07G08900, GaGST). To unveil potentially involved genes within the GaMYB-regulating-GaGST route, color metabolites of both GaMYB- and GaGST-virus-induced gene silencing (VIGS) petals were investigated, revealing that they were largely glycosyl-decorated flavonoids. Accordingly, a transcriptomic survey of both VIGS petals identified a glycosyl-transferase gene (GaGT, Gar02G15390). Notably, this GaGT is adjacent to one of the genome-wide association study loci concerning petal spots in Gossypium arboreum, and it is also positively regulated by GaMYB. This new regulatory route including both GST and GT regulated by MYB is conserved among the three cotton species examined in this study (Gossypium arboreum, Gossypium hirsutum, and Gossypium barbadense). Accordingly, comprehensively evaluating the influence of these candidates and their homologs on cotton coloration may provide a more in-depth understanding of cotton coloration, ultimately facilitating the breeding of more colorful cotton. (c) 2025 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NCND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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