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プロリンを含むタンパク質の機能の喪失は,米に耐久的な疾患耐性を授与する
Shuichi Fukuoka1, Norikuni Saka, Hironori Koga
1QTL Genomics Research Center, National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan. fukusan@affrc.go.jp
Science (New York, N.Y.)
|August 22, 2009
まとめ
研究者らは,ライスブラスト病に対する耐久的で人種特異性のない耐性を与える新しい遺伝子,Pi21を特定した. この遺伝子は,この遺伝子です.
科学分野:
- 植物病理学 植物病理学
- 遺伝学 遺伝学とは
- 分子生物学は分子生物学である.
背景:
- マグナポルテ・オライゼ菌によって引き起こされる米爆破病は,世界の食糧安全保障に重大な脅威をもたらしています.
- 米に存在する人種特異的な耐性遺伝子は,耐久性が欠如し,病気の発生が頻発する.
研究 の 目的:
- 耐久性の高い,人種特異性のない,ライス爆破病に対する耐性を授与する新しい遺伝子を特定し,特徴づけること.
- 米の爆破耐性を高めるための育種プログラムにおけるこの遺伝子の可能性を調査する.
主な方法:
- Pi21と指定された新しい耐性遺伝子のクローニング.
- Pi21遺伝子とその暗号化されたタンパク質の機能分析.
- 爆破耐性のための米育種におけるPi21の評価.
主要な成果:
- Pi21は,潜在的な重金属結合とタンパク質-タンパク質相互作用領域を持つプロリンに富んだタンパク質をコードします.
- 野生型のPi21は,植物の防御反応を調節し,耐性を高めるようです.
- Pi21遺伝子は,米の味に影響する関連遺伝子から分離できます.
結論:
- Pi21遺伝子は,米の耐久性のある非人種特異性耐性を開発するための新しい戦略を提供します.
- 耐性pi21アレルは,ジャポニカ米株で見つかり,世界の米の爆破耐性を大幅に改善する可能性がある.
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