2024年5月27日，Elsevier 旗下top期刊《Food Chemistry》在线发表了云南师范大学能源与环境科学学院黄益宗研究员课题组与农业农村部环境保护科研监测所保琼莉副研究员课题组最新研究成果《Metabolic regulation mechanism of melatonin for reducing cadmium accumulation and improving quality in rice》。云南师范大学能源与环境科学学院黄益宗研究员和农业农村部环境保护科研监测所保琼莉副研究员为共同通讯作者。

https://www.sciencedirect.com/science/article/pii/S0308814624015073

Abstract

Melatonin acts as a potential regulator of cadmium (Cd) tolerance in rice. However, its practical value in rice production remains unclear. In order to support the hypothesis that melatonin affects Cd accumulation and rice quality, we undertook the experiments. The results showed that exogenous melatonin application was associated with reduced Cd accumulation (23–43%) in brown rice. Fourier transform infrared spectroscopy (FTIR) analysis showed that exogenous melatonin affected the rice protein secondary structure and starch short-range structure. Metabolomics based on LC–MS/MS revealed that exogenous melatonin altered the brown rice metabolic profile, decreased fatty acid metabolite content, but increased amino acid metabolite, citric acid, melatonin biosynthetic metabolite, and plant hormone contents. These findings indicate that exogenous melatonin can effectively reduced Cd accumulation and improve rice quality through metabolic network regulation, serving as an effective treatment for rice cultivated in Cd-contaminated soil.

扩展阅读：

• 农业农村部环境保护科研监测所黄益宗研究员加盟云南师范大学