センサおよびヘルパーNLRの家族間共同転送は,血管芽種間の免疫受容体の機能を拡張する
Xiaofei Du1, Maheen Alam2, Kamil Witek3
1State Key Laboratory of Agricultural and Forestry Biosecurity, Frontiers Science Center for Molecular Design Breeding, Department of Plant Pathology, China Agricultural University, Beijing 100193, China.
Cell
|June 18, 2025
まとめ
研究者らは,異なる植物ファミリーにおける植物免疫受容体 (NLR) 遺伝子機能を有効にしました. この突破により,NLRが米や大豆に作用し,作物の病気耐性を高めることができます.
科学分野:
- 植物免疫学
- 分子遺伝学
- 植物の科学
背景:
- 植物免疫受容体は,ヌクレオチド結合性,ルシンの豊富なリピート (NLR) 遺伝子で,病原体を認識しますが,遠縁の植物では分類機能 (RTF) が制限されています.
- 植物ファミリー全体でNLR遺伝子の機能を活性化することは,作物における広範囲の病気に対する耐性を開発するために極めて重要です.
研究 の 目的:
- 植物 NLR 遺伝子の制限された分類機能の克服
- 米,大豆,アラビドプシスのような異種植物のNLR遺伝子の機能を可能にします.
主な方法:
- 細胞死 (NRC) 型ヘルパーNLRに必要な同種のNLRとセンサNLR遺伝子の併発.
- 大豆の原生体とアラビドプシスの発現分析
- ライスでの機能的検証は,Xanthomonas oryzae pvでチャレンジする. オリジコラ
主要な成果:
- ソラナム・アメリカナム Rpi-amr1,Rpi-amr3,およびペッパーBs2センサーのNLRは,大豆およびアラビドプシスのNRCヘルパーNLRと共表現されたとき,効果因子反応性を授与した.
- ペッパーBs2とNRCを表現するライスラインは,保存されたエフェクターAvrBs2を認識した.
- このライス系は,Xanthomonas oryzae pvに対する耐性を示した. オリジコラという 病原菌は 自然に耐性がない
結論:
- センサーおよびヘルパーNLRの家族間共同転送は,センサーNLRの有用性を成功裏に拡張します.
- このアプローチは,米,大豆,ブラシカなどの作物の病気耐性を高めるための新しいツールを提供します.
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