Genome-Wide Characterization and Functional Analysis of ABCG Subfamily Reveal Its Role in Cutin Formation in Cotton
文献类型： 外文期刊
作者： Huo, Xuehan 1 ; Pan, Ao 3 ; Lei, Mingyang 1 ; Song, Zhangqiang 2 ; Chen, Yu 2 ; Wang, Xin 1 ; Gao, Yang 2 ; Zhang, Jingxia 2 ; Wang, Shengli 2 ; Zhao, Yanxiu 1 ; Wang, Furong 1 ; Zhang, Jun 1 ;
作者机构： 1.Shandong Normal Univ, Life Sci Coll, Jinan 250358, Peoples R China
2.Shandong Acad Agr Sci, Inst Ind Crops, Key Lab Cotton Breeding & Cultivat Huang Huai Hai, Minist Agr & Rural Affairs, Jinan 250100, Peoples R China
3.Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Peoples R China
关键词： Gossypium; ABCG; function; cutin formation; ultrastructure; VIGS
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN：
年卷期： 2023 年 24 卷 3 期
页码：
收录情况： SCI
摘要： ATP-binding cassette transporter G (ABCG) has been shown to be engaged in export of broad-spectrum compounds with structural differences, but little is known concerning its role in cutin formation of cotton (Gossypium spp.). In this study, we conduct a genome-wide survey and detected 69, 71, 124 and 131 ABCG genes within G. arboretum, G. raimondii, G. hirsutum and G. barbadense, separately. The above ABCGs could be divided into four groups (Ia, Ib, Ic, II). Some ABCG genes such as GhABCG15, whose homologous gene transports cuticular lipid in Arabidopsis, was preferentially expressed in the development of fiber. A weighted gene co-expression network analysis (WGCNA) demonstrated that GhABCG expression was significantly associated with the amount of 16-Hydroxypalmitate (a main component of cutin precursor) in cotton fibers. Further, silencing of GhABCG15 by virus-induced gene silencing (VIGS) in cotton generated brightened and crinkled leaves as well as reduced thickness of cuticle and increased permeability. Chemical composition analysis showed the cutin content in GhABCG15-silenced leaves had decreased while the wax content had increased. Our results provide an insight for better understanding of the role of the Gossypium ABCG family and revealed the essential role of GhABCGs in cotton cutin formation.
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