Genome-Wide Identification, Evolution and Expression Analyses of GA2ox Gene Family in Brassica napus L.
文献类型: 外文期刊
作者: Li, Yanhua 1 ; Huang, Hualei 1 ; Shi, Youming 1 ; Huang, Shuqin 1 ; Liu, Tao 1 ; Xiao, Changming 1 ; Tian, Xiaoqing 2 ; Zhao, Ping 1 ; Dai, Xiaoyan 3 ; Huang, Taocui 1 ; Zhou, Yan 1 ;
作者机构: 1.Chongqing Acad Agr Sci, Chongqing 401329, Peoples R China
2.Chongqing Municipal Agr Sch, Chongqing 401329, Peoples R China
3.Fengdu Agr Technol Serv Ctr, Chongqing 408201, Peoples R China
关键词: Brassica napus; GA2ox gene family; evolution; expression patterns
期刊名称:PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY ( 影响因子:1.7; 五年影响因子:1.4 )
ISSN: 0031-9457
年卷期: 2023 年 92 卷 3 期
页码:
收录情况: SCI
摘要: Gibberellin 2-oxidases (GA2ox) are important enzymes that maintain the balance of bioactive GAs in plants. GA2ox genes have been identified and characterized in many plants, but these genes were not investigated in Bras-sica napus. Here, we identified 31 GA2ox genes in B. napus and 15 of these BnaGA2ox genes were distributed in the A and C subgenomes. Subcellular localization predictions suggested that all BnaGA2ox proteins were localized in the cytoplasm, and gene structure analysis showed that the BnaGA2ox genes contained 2-4 exons. Phylogenetic analysis indicated that BnGA2ox family proteins in monocotyledons and dicotyledons can be divided into four groups, including two C19-GA2ox and two C20-GA2ox clades. Group 4 is a C20-GA2ox Class discovered recently. Most BnaGA2ox genes had a syntenic relationship with AtGA2ox genes. BnaGA2ox genes in the C subgenome had experienced stronger selection pressure than genes in the A subgenome. BnaGA2ox genes were highly expressed in specific tissues such as those involved in growth and development, and most of them were mainly involved in abiotic responses, regulation of phytohormones and growth and development. Our study provided a valuable evolutionary analysis of GA2ox genes in monocotyledons and dicotyledons, as well as an insight into the biological functions of GA2ox family genes in B. napus.
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