State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China.
Plant Signal Behav. 2012 Feb;7(2):174-7. doi: 10.4161/psb.18768. Epub 2012 Feb 1.
Although hydrogen peroxide (H₂O₂) and nitric oxide (NO) can act as an upstream signaling molecule to modulate the dynamic microtubule cytoskeleton during the defense responses to Verticillium dahliae (VD) toxins in Arabidopsis, it is not known the relationship between these two signaling molecules. Here, we show that VD-toxin-induced NO accumulation was dependent on prior H₂O₂ production, NO is downstream of H₂O₂ in the signaling process, and that H₂O₂ acted synergistically with NO to modulate the dynamic microtubule cytoskeleton responses to VD-toxins in Arabidopsis.
尽管过氧化氢(H₂O₂)和一氧化氮(NO)可以作为一种上游信号分子,在拟南芥对黄萎病菌(VD)毒素的防御反应中调节动态微管细胞骨架,但这两种信号分子之间的关系尚不清楚。在这里,我们表明,VD 毒素诱导的 NO 积累依赖于先前的 H₂O₂ 产生,NO 是信号传递过程中 H₂O₂ 的下游分子,并且 H₂O₂ 与 NO 协同作用,调节拟南芥对 VD 毒素的动态微管细胞骨架反应。