Metabolic regulation mechanism of melatonin for reducing cadmium accumulation and improving quality in rice
文献类型: 外文期刊
作者: Zewei Liu;Hongyu Sun;Yan Li;Qiongli Bao;Yizong Huang
作者机构:
关键词: FTIR;LC–MS/MS;Mineral nutrients;Protein;Starch
期刊名称: Food Chemistry
ISSN: 0308-8146
年卷期: 2024 年 455 卷
页码:
收录情况: SCIE(2024版) ; ; EI(2024版)
摘要: Melatonin acts as a potential regulator of cadmium (Cd) tolerance in rice. However, its practical value in rice production remains unclear. To validate the hypothesis that melatonin affects Cd accumulation and rice quality, a series of experiments were conducted. 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.
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