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Genome-wide characterization and expression profiling of B3 superfamily during ethylene-induced flowering in pineapple (Ananas comosus L.)

文献类型： 外文期刊

作者： Ruan, Cheng Cheng 1 ; Chen, Zhe 1 ; Hu, Fu Chu 1 ; Fan, Wei 2 ; Wang, Xiang He 1 ; Guo, Li Jun 1 ; Fan, Hong Yan 1 ; Luo, 1 ;

作者机构： 1.Hainan Acad Agr Sci, Inst Trop Fruit Trees, Key Lab Trop Fruit Tree Biol Hainan Prov, Haikou 571100, Hainan, Peoples R China

2.Yunnan Agr Univ, Coll Resources & Environm, Kunming 650201, Yunnan, Peoples R China

关键词： Pineapple; Flowering; Ethylene; B3

期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）

ISSN： 1471-2164

年卷期： 2021 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Background The B3 superfamily (B3s) represents a class of large plant-specific transcription factors, which play diverse roles in plant growth and development process including flowering induction. However, identification and functional surveys of B3 superfamily have not been reported in ethylene-induced pineapple flowering (Ananas comosus). Results 57 B3 genes containing B3 domain were identified and phylogenetically classified into five subfamilies. Chromosomal localization analysis revealed that 54 of 57 AcB3s were located on 21 Linkage Groups (LG). Collinearity analysis demonstrated that the segmental duplication was the main event in the evolution of B3 gene superfamily, and most of them were under purifying selection. The analysis of cis-element composition suggested that most of these genes may have function in response to abscisic acid, ethylene, MeJA, light, and abiotic stress. qRT-PCR analysis of 40 AcB3s containing ethylene responsive elements exhibited that the expression levels of 35 genes were up-regulated within 1 d after ethephon treatment and some were highly expressed in flower bud differentiation period in stem apex, such as Aco012003, Aco019552 and Aco014401. Conclusion This study provides a basic information of AcB3s and clues for involvement of some AcB3s in ethylene-induced flowering in pineapple.

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