title: Arabidopsis ERF109 mediates cross-talk between jasmonic acid and auxin biosynthesis during lateral root formation.
abstract: 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.
authors.affiliation: School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
authors.forename: Xiao-Teng
authors.initials: XT
authors.lastname: Cai
authors.affiliation: School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Xu
authors.affiliation: School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
authors.forename: Ping-Xia
authors.initials: PX
authors.lastname: Zhao
authors.affiliation: School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Liu
authors.affiliation: School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
authors.forename: Lin-Hui
authors.initials: LH
authors.lastname: Yu
authors.affiliation: School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
authors.forename: Cheng-Bin
authors.initials: CB
authors.lastname: Xiang
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D003517:Cyclopentanes / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D007210:Indoleacetic Acids / Q000378:metabolism*; D054883:Oxylipins / Q000378:metabolism*; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism*; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*
chemical_list: D029681:Arabidopsis Proteins; D003517:Cyclopentanes; C581417:ERF11 protein, Arabidopsis; D007210:Indoleacetic Acids; D054883:Oxylipins; D012097:Repressor Proteins; D014157:Transcription Factors; C011006:jasmonic acid