PRH1 mediates ARF7-LBD dependent auxin signaling to regulate lateral root development in Arabidopsis thaliana

Autoři: Feng Zhang aff001;  Wenqing Tao aff001;  Ruiqi Sun aff001;  Junxia Wang aff001;  Cuiling Li aff001;  Xiangpei Kong aff001;  Huiyu Tian aff001;  Zhaojun Ding aff001
Působiště autorů: The Key Laboratory of the Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, Shandong, China aff001
Vyšlo v časopise: PRH1 mediates ARF7-LBD dependent auxin signaling to regulate lateral root development in Arabidopsis thaliana. PLoS Genet 16(2): e32767. doi:10.1371/journal.pgen.1008044
Kategorie: Research Article
doi: 10.1371/journal.pgen.1008044


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.

Klíčová slova:

Acetic acid – Arabidopsis thaliana – Auxins – Lateral roots – Seedlings – Transcription factors – Transcriptional control – Naphthalenes


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