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Comparative metabolomics analysis reveals the variations of eating quality among three high-quality rice cultivars

文献类型： 外文期刊

作者： Gong, Rong 1 ; Huang, Daoqiang 1 ; Chen, Yibo 1 ; Li, Hong 1 ; Wang, Zhidong 1 ; Zhou, Degui 1 ; Zhao, Lei 1 ; Pan, Yangy 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Rice Breeding, Rice Res Inst, Guangzhou 510640, Peoples R China

2.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen 518120, Peoples R China

关键词： High-quality rice; Metabolomics; Differentially accumulated metabolites (DAMs); Superior eating quality; Nutrient quality

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

ISSN： 1380-3743

年卷期： 2020 年 40 卷 12 期

页码：

收录情况： SCI

摘要： Good eating quality is a highly desirable trait of rice which determines its commercial value and market share. However, the molecular basis of this trait remains largely unknown. Here, three high-quality conventional rice cultivars, including two superior eating quality cultivars Meixiangzhan-2 (MXZ) and Xiangyaxiangzhan (XYXZ), and one ordinary eating quality cultivar Huanghuazhan (HHZ), were analyzed by comparative metabolomics to identify the inherent mechanism for the formation of superior eating quality. The results showed 58.8% of common differential substances between MXZ vs HHZ and XYXZ vs HHZ were enriched in MXZ and XYXZ, whereas 39.2% of them were prominently decreased compared with HHZ, mainly including amino acids, carbohydrates, lipids, phenolamides, and flavonoids, which may be the primary factors leading to the differences of taste and flavor among these three cultivars. We also found that lysine derivatives and fatty acids may have a close relationship with taste. These results above provide important insights into the taste-forming mechanism of rice and will be beneficial for superior eating quality rice breeding.

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