College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, China.
Collaborative Innovation Center for Genetic Improvement and High Quality and Efficiency Production of Northeast Japonica Rice in China, Shenyang Agricultural University, Shenyang, Liaoning, China.
J Food Sci. 2024 Sep;89(9):5517-5530. doi: 10.1111/1750-3841.17229. Epub 2024 Aug 10.
Germinated brown rice has recently garnered widespread attention due to its high nutritional value. Previous research demonstrated that the bioactive components and functional properties of germinated brown rice varieties exhibit significant differences. Three germinated rice cultivars weedy rice WR04-6 (WR) and two cultivated rice cultivars with superior eating quality, Koshihikari (YG) and Daohuaxiang (DHX), were analyzed using metabolites and transcriptome profiling. Widely targeted metabolomics results showed that 85.9% and 71.2% of differential metabolites for WR vs. YG and WR vs. DHX were enriched in WR, respectively. The substances mainly included amino acids and derivatives, carbohydrates and its derivatives, organic acids and its derivatives, and flavonoids. Higher antioxidant activity was detected in WR compared to cultivated rice in metabolome analysis. Transcriptome analyses indicated that 18 responsive genes played pivotal roles in the conversion of key metabolites. These findings will provide theoretical underpinnings for the development of rice germplasm resources and the formulation of functional germinated grain foods.
发芽糙米因其营养价值高而备受关注。先前的研究表明，不同发芽糙米品种的生物活性成分和功能特性存在显著差异。本研究采用代谢组学和转录组学分析了三种发芽糙米品种野生稻 WR04-6（WR）和两种食用品质优良的栽培稻品种越光（YG）和稻花香（DHX）。广泛靶向代谢组学结果表明，WR 与 YG 和 WR 与 DHX 的差异代谢物分别有 85.9%和 71.2%在 WR 中富集。这些物质主要包括氨基酸及其衍生物、碳水化合物及其衍生物、有机酸及其衍生物和类黄酮。代谢组学分析表明，WR 的抗氧化活性高于栽培稻。转录组分析表明，18 个响应基因在关键代谢物的转化中发挥关键作用。这些发现为水稻种质资源的开发和功能性发芽谷物食品的制定提供了理论依据。
