The 14-3-3 protein GENERAL REGULATORY FACTOR11 (GRF11) acts downstream of nitric oxide to regulate iron acquisition in Arabidopsis thaliana
文献类型: 外文期刊
第一作者: Yang, Jian Li
作者: Yang, Jian Li;Chen, Wei Wei;Chen, Li Qian;Zheng, Shao Jian;Chen, Wei Wei;Qin, Cheng;Jin, Chong Wei;Shi, Yuan Zhi
作者机构:
关键词: general regulatory factor (GRF);iron acquisition;nitric oxide (NO);plant hormone;signal transduction;transcription factor
期刊名称:NEW PHYTOLOGIST ( 影响因子:10.151; 五年影响因子:10.475 )
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收录情况: SCI
摘要: Here we report the function of a general regulatory factor, GENERAL REGULATORYFACTOR11 (GRF11), in terms of the iron (Fe) deficiency response. Physiological and molecular responses of the loss-of-function Arabidopsis thaliana grill mutant to Fe supply were investigated. Genes involved in posttranscriptional regulation of FER-LIKEFE DEFICIENCY-INDUCED TRANSCRIPTION FACTOR (FIT) were also analyzed. Inaddition, the molecular link between the signaling molecule nitric oxide (NO) and Fe deficiency responses was further dissected. Our results suggest that GRF11 is necessary for induction of Fe-deficiency-tolerance mechanisms. The FIT protein can bind tothe promoter of GRF11, which contains an E-box motif. GRF11 also positively affects FIT transcription but has no influence on the genes involved in posttranscriptional regulation of FIT. Furthermore, NO positively regulates GRF11 inductionupon the onset of Fe deficiency. We propose that, upon the onset of Fe deficiency, induction of FIT expression is dependent on GRF11, which acts downstream of NO to mediate Fe deficiency responses.
分类号: Q94
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