由效应器 SyCD1 激活的 MdSP1-MdANK 免疫模块增强了 Malus domestica 对 Valsa mali mali 的抵抗力
Hongjia Yu1,2, Chang Geng1,2, Shang Liu1,2
1College of Life Science, Northwest A&F University, Yangling, China.
Plant physiology
|February 27, 2026
概括
萨卡罗特里克斯阳灵的cupredoxin蛋白 (SyCD1) 通过激活防御通路来增强果对瓦尔萨瘤的抵抗力. SyCD1触发莉酸 (JA) 信号通路,涉及MdSP1和MdANK蛋白质,以改善免疫力.
科学领域:
- 植物病理学 植物病理学
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 由Valsa mali引起的果瓦尔萨瘤 (AVC) 对全球果产量构成重大威胁.
- 使用像Saccharothrix yanglingensis这样的actinomycetes进行生物控制提供了一个可持续的管理策略.
- 尚不完全了解S. yanglingensis赋予耐药性的精确机制.
研究的目的:
- 为了识别和描述参与生物控制的Saccharothrix yanglingensis Hhs.015的效应蛋白.
- 阐明SyCD1-介导的果抗 Valsa mali. 的增强背后的分子机制.
- 研究斯酸 (JA) 信号通路和特定蛋白质在SyCD1的作用中的作用.
主要方法:
- 对Saccharothrix yanglingensis cupredoxin蛋白 (SyCD1) 的鉴定和分离.
- 评估SyCD1对各种组织中果耐药性的影响.
- 分析SyCD1对防御反应通路的影响,包括莉酸 (JA) 信号传递.
- 使用分子技术研究SyCD1,MdSP1和MdANK之间的蛋白质-蛋白质相互作用.
主要成果:
- 在多个果组织中,SyCD1显著增强了耐药性.
- 通过触发素酸 (JA) 信号通路,SyCD1激活了防御反应.
- SyCD1与M. domestica小蛋白1 (MdSP1) 直接相互作用,促进免疫反应.
- MdSP1和M. domestica ankyrin重复蛋白 (MdANK) 相互作用,共同增强果的耐药性.
结论:
- SyCD1是一种来自S. yanglingensis的有效效应蛋白,可以增强果对Valsa mali的抵抗力.
- SyCD1激活JA信号通路,对MdSP1和MdANK进行上调,以增强植物免疫力.
- 通过SyCD1介导的MdSP1-MdANK免疫模块的激活提供了一种用于生物控制果瓦尔萨瘤的新机制.
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