AtROP6 is involved in reactive oxygen species signaling in response to iron-deficiency stress in Arabidopsis thaliana.

Understanding the mechanism of iron (Fe)-deficiency responses is crucial for improving plant Fe bioavailability. Here, we found that the Arabidopsis Rho-like GTPase 6 mutant (rop6) is less sensitive to Fe-deficiency responses and has reduced levels of reactive oxygen species compared to wild-type (WT), while AtROP6-overexpressing seedlings exhibit more sensitivity to Fe-deficiency responses and has higher levels of compared to WT. Moreover, treatment with H₂ O₂ improves the sensitivity to Fe-deficiency responses in rop6 mutants. By using the yeast two-hybrid system, we further demonstrate the direct interaction between AtROP6 and Arabidopsis respiratory burst oxidase homolog D (AtRBOHD), which controls the generation of Overall, we suggest that AtROP6 is involved in AtRBOHD-mediated duanyu1670 signaling to modulate Fe-deficiency responses in Arabidopsis thaliana.

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