Open AccessPRH1 mediates ARF7-LBD dependent auxin signaling to regulate lateral root development in Arabidopsis thaliana
Author(s) -
Feng Zhang,
Wenqing Tao,
Ruiqi Sun,
Junxia Wang,
Cuiling Li,
Xiangpei Kong,
Huiyu Tian,
Zhaojun Ding
Publication year - 2020
Publication title -
plos genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.587
H-Index - 233
eISSN - 1553-7404
pISSN - 1553-7390
DOI - 10.1371/journal.pgen.1008044
Subject(s) - auxin , biology , arabidopsis , lateral root , arabidopsis thaliana , transcription factor , microbiology and biotechnology , transcription (linguistics) , genetics , gene , mutant , linguistics , philosophy
The development of lateral roots in Arabidopsis thaliana is strongly dependent on signaling directed by the AUXIN RESPONSE FACTOR7 (ARF7), which in turn activates LATERAL ORGAN BOUNDARIES DOMAIN (LBD) transcription factors ( LBD16 , LBD18 and LBD29 ). Here, the product of PRH1 , a PR-1 homolog annotated previously as encoding a pathogen-responsive protein, was identified as a target of ARF7-mediated auxin signaling and also as participating in the development of lateral roots. PRH1 was shown to be strongly induced by auxin treatment, and plants lacking a functional copy of PRH1 formed fewer lateral roots. The transcription of PRH1 was controlled by the binding of both ARF7 and LBDs to its promoter region.