Activated expression of AtEDT1/HDG11 promotes lateral root formation in Arabidopsis mutant edt1 by upregulating jasmonate biosynthesis
作者： Xiao-Teng Cai , Ping Xu , Yao Wang , Cheng-Bin Xiang
DOI: 10.1111/JIPB.12347
关键词:
摘要: Root architecture is crucial for plants to absorb water and nutrients. We previously reported edt1 (edt1D) mutant with altered root that contributes significantly drought resistance. However, the underlying molecular mechanisms are not well understood. Here we report one of EDT1/HDG11-conferred architecture. transcriptome comparison between wild type edt1D revealed upregulated genes involved in jasmonate biosynthesis signaling pathway were enriched root, which confirmed by quantitative RT-PCR. Further analysis showed EDT1/HDG11, as a transcription factor, bound directly HD binding sites promoters AOS, AOC3, OPR3, OPCL1, encode four key enzymes JA biosynthesis. found jasmonic acid level was elevated compared subsequently. In addition, more auxin accumulation observed lateral primordium type. Genetic opcl1 double also HDG11 partially dependent on regulating LR formation. Taken together, overexpression EDT1/HDG11 increases upregulating expressions several encoding activate promote
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