NO serves as a signaling intermediate downstream of H₂O₂ to modulate dynamic microtubule cytoskeleton during responses to VD-toxins in Arabidopsis.

Lin-Lin Yao, Bao-Lei Pei, Qun Zhou, Ying-Zhang Li

Plant signaling & behavior 2012 Feb

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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.

Citation

Lin-Lin Yao, Bao-Lei Pei, Qun Zhou, Ying-Zhang Li. NO serves as a signaling intermediate downstream of H₂O₂ to modulate dynamic microtubule cytoskeleton during responses to VD-toxins in Arabidopsis. Plant signaling & behavior. 2012 Feb;7(2):174-7