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Identification and expression of the CCO family during development, ripening and stress response in banana

文献类型： 外文期刊

作者： Zeng, Liming 1 ; Zeng, Liwang 3 ; Wang, Yu 3 ; Xie, Zhengnan 3 ; Zhao, Minhua 4 ; Chen, Jie 4 ; Ye, Xiaoxue 3 ; Tie, Weiwei 3 ; Li, Meiying 3 ; Shang, Sang 1 ; Tian, Libo 1 ; Zeng, Jian 4 ; Hu, Wei 3 ;

作者机构： 1.Hainan Univ, Sanya Nanfan Res Inst, Sanya, Hainan, Peoples R China

2.Hainan Univ, Sch Hort, Key Lab Qual Regulat Trop Hort Crops Hainan Prov, Haikou, Peoples R China

3.Chinese Acad Trop Agr Sci, Sanya Res Inst, Inst Sci & Tech Informat, Inst Trop Biosci & Biotechnol, Hainan, Peoples R China

4.Shaoguan Univ, Henry Fok Sch Biol & Agr, Guangdong Prov Key Lab Utilizat & Conservat Food &, Shaoguan, Guangdong, Peoples R China

5.Hainan Univ, Sch Life Sci, Haikou, Peoples R China

6.Chinese Acad Trop Agr Sci, Hainan Inst Trop Agr Resources, Hainan Key Lab Protect & Utilizat Trop Bioresource, Hainan, Peoples R China

关键词： Banana; Genome wide; CCOs; Stress; Development; Ripening

期刊名称：GENETICA （ 影响因子：1.5； 五年影响因子：1.5 ）

ISSN： 0016-6707

年卷期： 2023 年 151 卷 2 期

页码：

收录情况： SCI

摘要： Plant hormone abscisic acid (ABA) plays an important role in plant growth, development and response to biotic / abiotic stressors. Thus, it is necessary to investigate the crucial genes associated with ABA synthesis. Currently, the carotenoid cleavage oxygenases (CCOs) family that function as the key step for ABA synthesis are not well understood in banana. In this study, 13 MaCCO genes and 12 MbCCO genes, divided into NCED subgroup and CCD subgroup, were identified from the banana genome, and their evolutionary relationship, protein motifs, and gene structures were also determined. Transcriptomic analysis suggested the involvement of CCO genes in banana development, ripening, and response to abiotic and biotic stressors, and homologous gene pairs showed homoeologue expression bias in the A or B subgenome. Our results identified MaNCED3A, MaCCD1, and MbNCED3B as the genes with the highest expression during fruit development and ripening. MaNCED5 / MbNCED5 and MaNCED9A might respond to abiotic stress, and MaNCED3A, 3B, 6 A, 9 A, and MbNCED9A showed transcriptional changes that could be a response to Foc4 infection. These findings may contribute to the characterization of key enzymes involved in ABA biosynthesis, as well as to identify potential targets for the genetic improvement of banana.

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