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Genome-wide identification and expression analysis of the carotenoid metabolic pathway genes in pepper (Capsicum annuumL.)

文献类型： 外文期刊

作者： Guo, Qinwei 1 ; Liu, Huiqin 1 ; Zhang, Xinhui 1 ; Zhang, Ting 1 ; Li, Chaosen 1 ; Xiang, Xiaomin 1 ; Cui, Wenhao 1 ; Fang 1 ;

作者机构： 1.Quzhou Acad Agr Sci, Inst Vegetables, Quzhou Key Lab Germplasm Innovat & Utilizat Crop, Quzhou, Peoples R China

2.China Jiliang Univ, Coll Life Sci, Lab Plant Qual & Safety Biol, Hangzhou, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Vegetables, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou, Peoples R China

4.Zhejiang Acad Agr Sci, China Australia Res Ctr Crop Improvement, Hangzhou, Peoples R China

5.Jinhua Acad Agr Sci, Inst Vegetables, Lab Pepper Mol Breeding, Jinhua, Zhejiang, Peoples R China

关键词： carotenoid metabolic pathways; comparative analysis; expression patterns; fruit development; abiotic stress

期刊名称：BIOTECHNOLOGY & BIOTECHNOLOGICAL EQUIPMENT （ 影响因子：1.632； 五年影响因子：2.029 ）

ISSN： 1310-2818

年卷期： 2020 年 34 卷 1 期

页码：

收录情况： SCI

摘要： Carotenoids belong to a major family of isoprenoids which play vital roles in plant growth and development. Pepper (Capsicum annuumL.) is not only a vegetable and condiment grown worldwide, but also can be used as a model organism in fruit color research. In this study, 61 genes known to be involved in mevalonate (MVA), plastidial 2-C-methyl-d-erythritol-4-phosphate (MEP) and carotenoid metabolism (biosynthesis and catabolism) pathways were identified and characterized based on the genome of pepper plants. In the present study, it was found that 56 of the 61 carotenoid metabolism genes in pepper were unevenly distributed throughout 12 chromosomes.CaGGPPS2,CaGGPPS4aandCaGGPPS4bwere generally clustered into one region. This study identifiedCaHMGR1/CaHMGR3andCaHMGR1/CaHMGR2as segregation duplication events. In addition, the pepper carotenoid metabolism genes had high variations in gene structure. The key carotenoid metabolism genes showed different expression patterns during the pepper fruit development and under environmental stress conditions. The results obtained in this research investigation will contribute insight to the evolution and function of carotenoid metabolic pathways in pepper fruit.

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