数字农科院2.0

Genetic, metabolomic and transcriptomic analyses of the cotton yellow anther trait

文献类型： 外文期刊

作者： Qian Liang;Xiaokang Feng;Daowu Hu;Yan Long Jin;Xuefeng Wang;Xiao Hu Ma;Rui Liang;Qian Hao Zhu;Shoupu He;Huaguo Zhu;Feng Liu;Xinyu Zhang;Jie Sun;Fei Xue

作者机构：

关键词： Carotenoid biosynthesis;Flavonoid biosynthesis;PSY;Wild cotton;Yellow anther

期刊名称： International Journal of Biological Macromolecules

ISSN： 0141-8130

年卷期： 2025 年 300 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： In the fiber industry, cotton (Gossypium hirsutum L.) is an important crop. One of the most important morphology traits of plants is the color of the anthers, is closely related to pollen fertility and stress resistance. Upland cotton anthers appear white, while island cotton and many wild cotton species have yellow anthers. Carotenoids are natural pigments in plants which involved in many metabolic processes, including photosynthesis, photoprotection, photomorphogenesis, growth and development. Here, we characterized the yellow anther trait of G. hirsutum. Carotenoid and flavonoid profiles in the yellow anthers were greatly altered compared to that in the white anthers, indicating that both carotenoids and flavonoids contribute to the yellow anther phenotype. Map-based cloning identified GhYA (GH_A05G4013) encoding a phytoene synthase to be the candidate gene responsible for anther coloration. GhYA is predominantly expressed in anthers, with its expression level gradually decreasing with the development of anthers. Haplotype analysis revealed that white anthers are associated with two haplotypes, with X74 belonging to HAP1. Through evolutionary analysis, it was found that although there are many white anther Germplasm in upland cotton, the two types of white anther haplotypes were mutated from yellow anthers respectively. Comparative transcriptome analysis between the yellow anther and white anther accessions revealed differentially expressed genes related to both the carotenoid and flavonoid biosynthesis pathways, in line with the changed profiles of the two types of metabolites in yellow anthers; meanwhile, it also indicates potential cross-talk between the flavonoid and carotenoid pathways. According to the results, the PSY gene is critical for the regulation of carotenoids accumulation in cotton anthers.

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