Identification of a series of genes controlling shallow rooting in barley and its effect on waterlogging tolerance

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14837
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 39010:Science in plant genetics and breeding-related
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: Nakano Yuki 国立研究開発法人農業・食品産業技術総合研究機構, 中日本農業研究センター, 研究員 (40884979)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 根系構造 / 根伸長角度 / 湿害 / オオムギ

Outline of Final Research Achievements

Most barley cultivation in Japan is conducted in converted rice paddy fields with poor drainage, and stunted growth caused by waterlogging damage is an important factor in yield loss. In this study, to physically avoid waterlogging damage by shallow rooting, we identified orthologs of OsDRO1 and OsqSOR1, root growth angle control genes identified in rice, in barley (HvDRO1 and HvqSOR1).We then found that their polymorphisms were associated with the variation of root growth angle among barley accessions.

Free Research Field

植物栄養学

Academic Significance and Societal Importance of the Research Achievements

根の構造が植物の環境適応に重要な枠割を果たすことは示唆されてきたが、目視での観察が難しいことからこれまでの育種過程において根を対象とした選抜はほとんど行われてきていない。本研究で明らかとした大麦の根の角度を制御する遺伝子とその遺伝子多型の情報を用いればDNAマーカーを開発することができるため、目視での観察を行うことなく目的の根の形態を持つ品種の選抜を行うことが可能になる。