Genetic mapping and identification of Lg^(f) loci controlling green fuzz in Upland cotton(Gossypium hirsutum L.)

作     者：Dexin Liu Xueying Liu Yao Su Xiao Zhang Kai Guo Zhonghua Teng Jian Zhang Dajun Liu Zhengsheng Zhang Dexin Liu;Xueying Liu;Yao Su;Xiao Zhang;Kai Guo;Zhonghua Teng;Jian Zhang;Dajun Liu;Zhengsheng Zhang

作者机构：College of Agronomy and BiotechnologySouthwest UniversityChongqing 400716China 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2021年第9卷第4期

页      面：777-784页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the Genetically Modified Organisms Breeding Major Project of China(2016ZX08005005-001) the National Natural Science Foundation of China(31701471) the Fundamental Research Funds for the Central Universities(SWU118093) 

主　　题：Upland cotton Green fuzz Lg^(f) MYB9 Green pigment 

摘      要：Naturally colored cotton fiber is environment-friendly but has monotonous color and poor fiber *** of green fiber or fuzz genes would aid in investigating the biosynthesis of green pigments in cotton fibers. In this study, we established a mapping population and found that the Lg^(f) trait(white lint and green fuzz) from Gossypium hirsutum race latifolium is controlled by an incompletely dominant *** Lg^(f) locus was mapped to a 71-kb interval on chromosome 21 containing seven genes, including a transcription factor with similarity to Arabidopsis MYB9. Harboring 13 SNPs and a 4-bp insertion/deletion in its promoter, GhMYB9 was highly up-regulated in the critical period for green pigment development in fuzz. Virus-induced gene silencing of GhMYB9 in a green-fuzz accession of G. hirsutum race latifolium TX-41 conferred white or light green fuzz. These results suggest that GhMYB9 is an important contributor to green pigments in cotton fiber and shed light on the regulatory mechanism controlling green pigmentation.