Unique metabolic profiles of korean rice according to polishing degree, variety and geo-environmental factors

Yujin Kang, Bo Mi Lee, Eun Mi Lee, Chang Ho Kim, Jeong Ah Seo, Hyung Kyoon Choi, Young Suk Kim, Do Yup Lee

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The precise determination of the chemical composition in crops is important to identify their nutritional and functional value. The current study performed a systematic delineation of the rice metabolome, an important staple in Asia, to investigate the following: (1) comparative features between brown and white rice; (2) variety-specific composition (Ilpum vs. Odae); and (3) cultivation of region-dependent metabolic content. Global metabolic profiling and data-driven statistics identified the exclusive enrichment of compounds in brown rice compared to white rice. Next, the authors investigated a variety-governed metabolic phenotype among various geo-environmental factors. Odae, the early-ripening cultivar, showed higher contents of most chemicals compared to the late-ripening cultivar, Ilpum. The authors identified regional specificity for cultivation among five areas in Korea which were characterized by polishing degree and cultivar type. Finally, the current study proposes a possible linkage of the region-specific metabolic signatures to soil texture and total rainfall. In addition, we found tryptophan metabolites that implied the potential for microbe-host interactions that may influence crop metabolites.

Original languageEnglish
Article number711
Issue number4
StatePublished - Apr 2021


  • Brown rice
  • Cultivation region
  • Metabolomics
  • Primary metabolites
  • Secondary metabolites
  • Variety
  • White rice


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