Arabidopsis ERF109 mediates cross-talk between jasmonic acid and auxin biosynthesis during lateral root formation

被引:246
作者
Cai, Xiao-Teng [1 ]
Xu, Ping [1 ]
Zhao, Ping-Xia [1 ]
Liu, Rui [1 ]
Yu, Lin-Hui [1 ]
Xiang, Cheng-Bin [1 ]
机构
[1] Univ Sci & Technol China, Sch Life Sci, Hefei 230027, Peoples R China
来源
NATURE COMMUNICATIONS | 2014年 / 5卷
关键词
ETHYLENE-RESPONSIVE ELEMENT; CONFERS DROUGHT TOLERANCE; TRANSCRIPTION FACTOR; GENE-EXPRESSION; PLANT DEVELOPMENT; METHYL JASMONATE; HORMONE INTERACTIONS; GCC-BOX; IDENTIFICATION; PROMOTER;
D O I
10.1038/ncomms6833
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Jasmonic acid (JA) is well known to promote lateral root formation but the mechanisms by which JA signalling is integrated into the pathways responsible for lateral root formation, and how it interacts with auxin in this process remains poorly understood. Here, we report that the highly JA-responsive ethylene response factor 109 (ERF109) mediates cross-talk between JA signalling and auxin biosynthesis to regulate lateral root formation in Arabidopsis. erf109 mutants have fewer lateral roots under MeJA treatments compared with wild type whereas ERF109 overexpression causes a root phenotype that resembles those of auxin overproduction mutants. ERF109 binds directly to GCC-boxes in the promoters of ASA1 and YUC2, which encode two key enzymes in auxin biosynthesis. Thus, our study reveals a molecular mechanism for JA and auxin cross-talk during JA-induced lateral root formation.
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页数:13
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