Genome-wide identification and characterization of genes involved in carotenoid metabolic in three stages of grapevine fruit development
文献类型： 外文期刊
作者： Leng, Xiangpeng 1 ; Wang, Peipei 1 ; Wang, Chen 1 ; Zhu, Xudong 1 ; Li, Xiaopeng 1 ; Li, Hongyan 2 ; Mu, Qian 3 ; Li, Ao; 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Hort, Tongwei Rd 6, Nanjing 210095, Jiangsu, Peoples R China
2.Guangxi Acad Agr Sci, Grape & Wine Res Inst, Daxuedong Rd 174, Nanning 530007, Peoples R China
3.Shandong Aacad Grape, Gongyenan Rd 103, Jinan 250110, Peoples R China
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2017 年 7 卷
页码：
收录情况： SCI
摘要： Carotenoids not only play indispensable roles in plant growth and development but also enhance nutritional value and health benefits for humans. In this study, total carotenoids progressively decreased during fruit ripening. Fifty-four genes involving in mevalonate (MVA), 2-C-methyl-D-erythritol 4-phosphate (MEP), carotenoid biosynthesis and catabolism pathway were identified. The expression levels of most of the carotenoid metabolism related genes kept changing during fruit ripening generating a metabolic flux toward carotenoid synthesis. Down regulation of VvDXS, VvDXR, VvGGPPS and VvPSY and a dramatic increase in the transcription levels of VvCCD might be responsible for the reduction of carotenoids content. The visible correlation between carotenoid content and gene expression profiles suggested that transcriptional regulation of carotenoid biosynthesis pathway genes is a key mechanism of carotenoid accumulation. In addition, the decline of carotenoids was also accompanied with the reduction of chlorophyll content. The reduction of chlorophyll content might be due to the obstruction in chlorophyll synthesis and acceleration of chlorophyll degradation. These results will be helpful for better understanding of carotenoid biosynthesis in grapevine fruit and contribute to the development of conventional and transgenic grapevine cultivars for further enrichment of carotenoid content.
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