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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Cai XT,Xu P,Zhao PX,Liu R,Yu LH,Xiang CBdoi
10.1038/ncomms6833subject
Has Abstractpub_date
2014-12-19 00:00:00pages
5833issn
2041-1723pii
ncomms6833journal_volume
5pub_type
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