全球蛋白质组分析确定了PeVYV P4诱导的宿主蛋白酸化变化,这些变化有助于病毒扩散
Shijun Li1, Xiao Yang2,3, Yu Zhang2,3
1College of Plant Protection, Hunan Agricultural University, Changsha, 410000, China.
BMC plant biology
|November 19, 2025
概括
PeVYV P4蛋白操纵尼古提亚烟草中的宿主酸化,影响病毒感染和传播. 这项研究揭示了对PeVYV病原发生至关重要的关键酸化事件,并为耐药作物发展提供了目标.
科学领域:
- 植物病理学 植物病理学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 蛋白质酸化是调节植物生物过程的关键翻译后修饰.
- PeVYV P4蛋白影响宿主代谢物挥发,影响昆虫的吸引力和病毒的传播.
- 在此之前,P4诱导的宿主蛋白酸化在PeVYV病变发生中的作用是未知的.
研究的目的:
- 为了对尼科蒂亚纳烟草进行全面的蛋白质组分析,以对PeVYV P4蛋白进行反应.
- 确定关键的酸化事件及其在PeVYV感染和发病过程中的作用.
- 探索PeVYV与宿主蛋白酸化网络之间的相互作用.
主要方法:
- 对PeVYV P4过度表达的转基因和野生型尼科蒂亚纳烟草菌株的比较蛋白组分析.
- 识别和量化脂蛋白和脂蛋白.
- 基因本体学 (GO) 分析,以确定差异化蛋白质的丰富途径.
主要成果:
- 鉴定了1,412种化蛋白和3,954种化,其中225种具有显著差异.
- 不同化蛋白质在氧化化,光合作用和代谢途径中得到丰富.
- 在Ser360中对S-转移酶 (SATF) 的酸化对PeVYV感染至关重要,而PeVYV抑制了MAPK信号传递.
结论:
- 通过PeVYV P4介导的酸化对于尼古提亚烟草中的病毒感染至关重要.
- 对宿主酸化网络的病毒操纵提供了对PeVYV病变的洞察力.
- 这些发现表明,通过分子育种来开发抗PeVYV品种的潜在目标.
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