Mass spectrometry-based metabolomics investigation on two different indica rice grains (Oryza sativa L.) under cadmium stress

Ting Zeng, Baohua Fang, Fenglin Huang, Li Dai, Zhi Tang, Jinglin Tian, Guodong Cao, Xuanlin Meng, Yuanchen Liu, Bo Lei, Minghua Lu, Zongwei CAI*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Cadmium is a toxic environmental pollutant that is readily absorbed by rice grains and poses serious threats to human health. The selection and breeding of rice varieties with low cadmium accumulation is one of the most economical and ecological methods to reduce cadmium exposure. In this study, two different indica rice grains under cadmium stress were subjected to mass spectrometry-based metabolomics analysis for the first time. When the cadmium concentration increased in rice grains, most carbohydrates and amino acids were down-regulated, except myoinositol that can prevent cadmium toxicity, which was up-regulated. D-Mannitol and L-cysteine were up-regulated with the increase of cadmium concentration in low-cadmium-accumulating rice. Also, organic acids were activated especially 13-(S)-hydroperoxy-9(Z),11(E),15(Z)-octadecatrienoic acid that is related to the alpha-linolenic acid metabolism and jasmonic acid production. The determination of biomarkers and characterization of metabolic pathways might be helpful for the selection of rice varieties with low cadmium accumulation.

Original languageEnglish
Article number128472
JournalFood Chemistry
Volume343
DOIs
Publication statusPublished - 1 May 2021

Scopus Subject Areas

  • Analytical Chemistry
  • Food Science

User-Defined Keywords

  • Cadmium
  • GC–MS
  • LC–MS
  • Metabolomics
  • Rice

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