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Sun W, Shi J, Hong J, Zhao G, Wang W, Zhang D, Zhang W, Shi J. Natural variation and underlying genetic loci of γ-oryzanol in Asian cultivated rice seeds. THE PLANT GENOME 2022; 15:e20201. [PMID: 35762101 DOI: 10.1002/tpg2.20201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 02/18/2022] [Indexed: 06/15/2023]
Abstract
γ-oryzanol is the most studied component in rice (Oryza sativa L.) bran oil. It is not only associated with physiological processes of rice growth and development but also grain quality that is related to human health. Previous studies focused mainly on γ-oryzanol composition and content in various rice cultivars, while its biosynthetic and regulatory pathways remain unknown. Here we present the quantitative identification of γ-oryzanol in rice seeds across 179 Asian cultivated accessions using ultra-performance liquid chromatography-time-of-flight mass spectrometry (UPLC-TOF/MS), which revealed a significant natural variation in γ-oryzanol content among these tested rice accessions. In addition, we present, for the first time, the genome-wide association study (GWAS) on rice seed γ-oryzanol, which identified 187 GWAS signal hot spots and 13 candidate genes that are associated with variable γ-oryzanol content and provided the top 10 rice haplotypes with high γ-oryzanol content for breeding. Collectively, our study provides valuable germplasms for breeding rice cultivars rich in γ-oryzanol and genetic resources for elucidating genetic and biochemical bases of variable γ-oryzanol in rice.
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Affiliation(s)
- Wenli Sun
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong Univ., Shanghai, 200240, China
| | - Jin Shi
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong Univ., Shanghai, 200240, China
| | - Jun Hong
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong Univ., Shanghai, 200240, China
| | - Guochao Zhao
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal Univ., Shanghai, 200234, China
| | - Wensheng Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong Univ., Shanghai, 200240, China
| | - Wei Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong Univ., Shanghai, 200240, China
| | - Jianxin Shi
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong Univ., Shanghai, 200240, China
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2
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Nakano H, Yoshida H, Yabe S, Fushimi E, Tanaka R, Yamasaki M, Nakagawa H. γ‐Oryzanol concentrations in various rice genotypes ripened under different air temperatures. Cereal Chem 2022. [DOI: 10.1002/cche.10597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroshi Nakano
- Kyushu Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO)496 IzumiChikugoFukuoka833‐0041Japan
| | - Hiroe Yoshida
- Institute for Agro‐Environmental Sciences, National Agriculture and Food Research Organization (NARO)3‐1‐3 KannondaiTsukubaIbaraki305‐8604Japan
- Central Region Agricultural Research Center, National Agriculture and Food Research Organization (NARO)360 Kusawa, AnochoTsuMie514‐2392Japan
| | - Shiori Yabe
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO)2‐1‐2 KannondaiTsukubaIbaraki305‐8518Japan
| | - Erina Fushimi
- Institute for Agro‐Environmental Sciences, National Agriculture and Food Research Organization (NARO)3‐1‐3 KannondaiTsukubaIbaraki305‐8604Japan
| | - Ryo Tanaka
- Kyushu Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO)496 IzumiChikugoFukuoka833‐0041Japan
| | - Masanori Yamasaki
- Food Resources Education and Research Center, Graduate School of Agricultural ScienceKobe University1348 Uzurano‐choKasaiHyogo675‐2103Japan
- Graduate School of Science and TechnologyNiigata University8050 Ikarashi 2‐no‐cho, Nishi‐kuNiigata950‐2181Japan
| | - Hiroshi Nakagawa
- Institute for Agro‐Environmental Sciences, National Agriculture and Food Research Organization (NARO)3‐1‐3 KannondaiTsukubaIbaraki305‐8604Japan
- Core Technology Research Headquarters, National Agriculture and Food Research Organization (NARO)1‐31‐1 KannondaiTsukubaIbaraki305‐0856Japan
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