Institute of Vegetables Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China.
Int J Mol Sci. 2023 Sep 7;24(18):13781. doi: 10.3390/ijms241813781.
Pak choi is one of the most important leafy vegetables planted in East Asia and provides essential nutrients for the human body. Purple pak choi differs mainly in leaf colour but exhibits distinct nutritional profiles from green pak choi. In this study, we performed metabolic and transcriptomic analyses to uncover the mechanisms underlying the differences in metabolite biosynthesis profiles between the two pak choi varieties. Metabolite profiling revealed significant differences in the levels of metabolites, mainly amino acids and their derivatives and flavonoids. Furthermore, 34 flavonoids significantly differed between green and purple pak choi leaves, and cyanidin and its derivative anthocyanins were abundant in purple pak choi. In addition, we found that the structural genes , , , and , as well as the transcription factor , play a major role in anthocyanin synthesis. These results provide insight into the molecular mechanisms underlying leaf pigmentation in pak choi and offer a platform for assessing related varieties.
白菜是东亚地区最重要的叶菜之一，为人体提供必需的营养物质。紫白菜主要在叶片颜色上有所不同，但与绿白菜相比，其营养成分明显不同。在这项研究中，我们进行了代谢组学和转录组学分析，以揭示两种白菜品种在代谢物生物合成谱差异背后的机制。代谢组学分析显示，代谢物水平存在显著差异，主要是氨基酸及其衍生物和类黄酮。此外，绿白菜和紫白菜叶片中的 34 种类黄酮差异显著，而紫白菜中含有丰富的矢车菊素及其衍生物花青素。此外，我们发现结构基因 、 、 、 和转录因子 对花青素合成起主要作用。这些结果为白菜叶片色素形成的分子机制提供了深入了解，并为相关品种的评估提供了一个平台。
