ポプラ miR1447は,SA依存経路を通じた病気に対する耐性の負の調節剤です
Dandan Xiao1, Kaijing Rong1, Tiantian Fu1
1State Key Laboratory of Tree Genetics and Breeding, National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, the Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China.
Plant biotechnology journal
|February 12, 2026
まとめ
マイクロRNA1447 (miR1447) は,PopTCTP.をターゲットにすることで,病原体に対するポプラの免疫を否定的に調節します. サリシル酸 (SA) 処理は,この経路を調節し,病気に対する耐性を影響し,樹木育種のためのターゲットを提供します.
科学分野:
- 植物分子生物学 植物分子生物学
- 植物病理学 植物病理学
- 植物バイオテクノロジー 植物バイオテクノロジー
背景:
- MicroRNA1447 (miR1447) は,アビオティックなストレスや害虫に対するの反応に影響することが知られている.
- 病原体に対するポプラの免疫におけるmiR1447の特定の役割とその分子機構は,以前は不明でした.
研究 の 目的:
- 菌類やバクテリアの病原体に対するポプラ病の耐性におけるmiR1447の機能を明らかにする.
- の免疫におけるmiR1447によって調節される分子標的とシグナル伝達経路を特定する.
- miR1447,サリチル酸 (SA) 信号伝達,および植物防御応答の相互作用を調査する.
主な方法:
- オーバーエクスプレッション (OE) とショート・タンデム・ターゲット・ミミック (STTM) のポプラ線を用いて,miR1447の機能を研究した.
- miR1447の標的を特定するために,RNAi線,デグラドーム,一時的な共表現アッセイ,GFP光を含む統合的分析を使用しました.
- miR1447およびPopTCTPプロモーターのSA治療に対する反応性を評価するための分子および遺伝分析を実施しました.
主要な成果:
- miR1447は,キノコやバクテリアの病原体に抵抗するポップル病の負の調節剤として作用する.
- PopTuberous Cell-Circulating Factor (PopTCTP) は,miR1447の直接標的として特定され,dnaJ A6.と相互作用しています.
- miR1447-PopTCTPモジュールは,MAPKシグナル伝達とROSスキャベリングを通じてPTI (病原性関連分子パターン誘発免疫) とETI (効果因子誘発免疫) のクロストークに影響を与え,SA処理はこれらの効果を調節する.
結論:
- 新しく開発されたmiR1447-PopTCTP-SAシグナル伝達経路は,様々な病原菌に対するポプラの耐病性を媒介する.
- この経路は,MAPKシグナル伝達と活性酸素種 (ROS) スキャビングの調節を伴う.
- この発見は,ポプラの育種プログラムにおける疾患耐性を高めるための潜在的な遺伝的標的を提供している.
キーワード:
SASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASASA病気に対する耐性 病気に対する耐性miR14474747 miR144747 miR144747 miR144747 miR144747 miR144747 miR144747 miR144747 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447 miR1447ポプラール・ポプラール (Poplar Poplar) とは
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