AGC 激酶 OXI1 和 AGC2-2 通过化载体 PDR6 调节素分泌和抗病能力
Juan Han1,2, Chang-Xin Liu1, Jian Liu1
1Department of Bioengineering, Huainan Normal University, Huainan, Anhui Province 232038, China.
Plant physiology
|March 27, 2024
概括
植物激酶OXI1和AGC2-2酸化物PDR载体,调节卡马莱克辛分泌和植物防御. 在PDR6上特定的酸化位点增强了流出活性和血稳定性.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物生物化学 植物生物化学
- 植物病理学 植物病理学
背景情况:
- 植物输送物对二次代谢物分布至关重要,影响植物防御和微生物相互作用.
- 酸化调节了载体活动,稳定性和运输,但基本的机制在很大程度上是未知的.
研究的目的:
- 为了确定参与调节植物二次代谢物载体的酶.
- 为了阐明Arabidopsis thaliana中类耐药性 (PDR) 载体的酸化机制.
主要方法:
- 确定了与卡马莱克辛分泌和植物防御相关的AGC激酶 (OXI1,AGC2-2).
- 在PDR载体 (PDR6,PDR8,PDR12) 进行了体外激酶试验.
- 通过LC-MS/MS和并行反应监测来确定化部位,确认了PDR6与OXI1和AGC2-2的相互作用.
主要成果:
- 发现的OXI1和AGC2-2激酶在特定位置与PDR6相互作用和酸化 (S31,S33,S827,T832).
- 在S31,S33和S827的基诱导酸化增强了PDR6的流量活动.
- 在T832的酸化可能会在血膜中稳定PDR6.
结论:
- 阐明了通过OXI1和AGC2-2的酸化调节PDR型转运体活性的部分机制.
- 确定了PDR6上调节其功能的特定酸化位.
- 结果为植物育种中的潜在应用提供了洞察力,以加强作物保护.
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