The PIN gene family in cotton (Gossypium hirsutum): genome-wide identification and gene expression analyses during root development and abiotic stress responses

被引:32
作者
He, Peng [1 ,2 ]
Zhao, Peng [1 ]
Wang, Limin [3 ]
Zhang, Yuzhou [2 ]
Wang, Xiaosi [2 ]
Xiao, Hui [2 ]
Yu, Jianing [2 ]
Xiao, Guanghui [1 ]
机构
[1] Shaanxi Normal Univ, Minist Educ Med Plant Resources & Nat Pharmaceut, Coll Life Sci,Key Lab, Natl Engn Lab Resource Dev Endangered Crude Drugs, Xian 710119, Shaanxi, Peoples R China
[2] Shaanxi Normal Univ, Coll Life Sci, Xian 710119, Shaanxi, Peoples R China
[3] Huazhong Agr Univ, Natl Ctr Crop Mol Breeding Technol, Natl Key Lab Crop Genet Improvement, Coll Plant Sci & Technol,Natl Ctr Oil Crop Improv, Wuhan 430070, Hubei, Peoples R China
来源
BMC GENOMICS | 2017年 / 18卷
基金
中国国家自然科学基金;
关键词
Auxin; PIN-formed; Cotton; Root development; Expression patterns; Abiotic stress; POLAR AUXIN TRANSPORT; ARABIDOPSIS-THALIANA; TRANSCRIPTION FACTOR; PROVIDES INSIGHTS; FIBER DEVELOPMENT; PROTEIN FAMILY; PLANT; SEQUENCE; HOMEOSTASIS; DATABASE;
D O I
10.1186/s12864-017-3901-5
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Background: Cell elongation and expansion are significant contributors to plant growth and morphogenesis, and are often regulated by environmental cues and endogenous hormones. Auxin is one of the most important phytohormones involved in the regulation of plant growth and development and plays key roles in plant cell expansion and elongation. Cotton fiber cells are a model system for studying cell elongation due to their large size. Cotton is also the world's most utilized crop for the production of natural fibers for textile and garment industries, and targeted expression of the IAA biosynthetic gene iaaM increased cotton fiber initiation. Polar auxin transport, mediated by PIN and AUX/LAX proteins, plays a central role in the control of auxin distribution. However, very limited information about PIN-FORMED (PIN) efflux carriers in cotton is known. Results: In this study, 17 PIN-FORMED (PIN) efflux carrier family members were identified in the Gossypium hirsutum (G. hirsutum) genome. We found that PIN1-3 and PIN2 genes originated from the At subgenome were highly expressed in roots. Additionally, evaluation of gene expression patterns indicated that PIN genes are differentially induced by various abiotic stresses. Furthermore, we found that the majority of cotton PIN genes contained auxin (AuxREs) and salicylic acid (SA) responsive elements in their promoter regions were significantly up-regulated by exogenous hormone treatment. Conclusions: Our results provide a comprehensive analysis of the PIN gene family in G. hirsutum, including phylogenetic relationships, chromosomal locations, and gene expression and gene duplication analyses. This study sheds light on the precise roles of PIN genes in cotton root development and in adaption to stress responses.
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页数:10
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