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At ROP 6 is involved in reactive oxygen species signaling in response to iron‐deficiency stress in Arabidopsis thaliana
Author(s) -
Zhai Longmei,
Sun Chaohua,
Feng Yi,
Li Duyue,
Chai Xiaofen,
Wang Lei,
Sun Qiran,
Zhang Guifen,
Li Yi,
Wu Ting,
Zhang Xinzhong,
Xu Xuefeng,
Wang Yi,
Han Zhenhai
Publication year - 2018
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1002/1873-3468.13257
Subject(s) - arabidopsis , arabidopsis thaliana , reactive oxygen species , iron deficiency , mutant , chemistry , wild type , microbiology and biotechnology , nadph oxidase , gtpase , biology , biochemistry , gene , medicine , anemia
Understanding the mechanism of iron (Fe)‐deficiency responses is crucial for improving plant Fe bioavailability. Here, we found that the Arabidopsis Rho‐like GTP ase 6 mutant ( rop6 ) is less sensitive to Fe‐deficiency responses and has reduced levels of reactive oxygen species ( ROS ) compared to wild‐type ( WT ), while At ROP 6 ‐overexpressing seedlings exhibit more sensitivity to Fe‐deficiency responses and has higher levels of ROS compared to WT . Moreover, treatment with H 2 O 2 improves the sensitivity to Fe‐deficiency responses in rop6 mutants. By using the yeast two‐hybrid system, we further demonstrate the direct interaction between At ROP 6 and Arabidopsis respiratory burst oxidase homolog D (At RBOHD ), which controls the generation of ROS . Overall, we suggest that At ROP 6 is involved in At RBOHD ‐mediated ROS signaling to modulate Fe‐deficiency responses in Arabidopsis thaliana .