Genome-Wide Identification and Functional Investigation of 1-Aminocyclopropane-1-carboxylic Acid Oxidase (ACO) Genes in Cotton

Plants

卷:10

Lu Sun¹  Yonglin Yang²  Fei Wei³  Hengling Wei³  Yujun Xue³  Pengyun Chen³  Pengbo Hao³ 

[1] Handan Academy of Agricultural Sciences, Handan 056001, China;

[2] Shihezi Academy of Agricultural Sciences, Shihezi 832099, China;

[3] State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China;

关键词: G. hirsutum;    ACO gene;    expression patterns;    flowering;    stress response;   

DOI  :  10.3390/plants10081699

来源: DOAJ

【 摘 要 】

ACO is one of the rate-limiting enzymes in the biosynthesis of ethylene, and it plays a critical role in the regulation of plant growth and development. However, the function of ACO genes in cotton is not well studied. In this study, a total of 332 GhACOs, 187 GaACOs, and 181 GrACOs were identified in G. hirsutum, G. arboretum, and G. raimondii, respectively. Gene duplication analysis showed that whole-genome duplication (WGD) and tandem duplication were the major forces driving the generation of cotton ACO genes. In the promoters of GhACOs, there were cis-acting elements responding to stress, phytohormones, light, and circadian factors, indicating the possible involvement of GhACOs in these processes. Expression and co-expression analyses illustrated that most GhACOs were not only widely expressed in various tissues but also coexpressed with other genes in response to salt and drought stress. GhACO106_At overexpression in Arabidopsis promoted flowering and increased salt tolerance. These results provide a comprehensive overview of the ACO genes of cotton and lay the foundation for subsequent functional studies of these genes.

【 授权许可】

Unknown