A secreted peptide acts on BIN2-mediated phosphorylation of ARFs to potentiate auxin response during lateral root development
SCIE
SCOPUS
- Title
- A secreted peptide acts on BIN2-mediated phosphorylation of ARFs to potentiate auxin response during lateral root development
- Authors
- Hyunwoo Cho; Hojin Ryu; Rho, S; Hill, K; Smith, S; Audenaert, D; Park, J; Han, S; Beeckman, T; Bennett, MJ; Hwang, D; De Smet, I; Hwang, I
- Date Issued
- 2014-01
- Publisher
- macmillan
- Abstract
- The phytohormone auxin is a key developmental signal in plants. So far, only auxin perception has been described to trigger the release of transcription factors termed AUXIN RESPONSE FACTORs (ARFs) from their AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA) repressor proteins. Here, we show that phosphorylation of ARF7 and ARF19 by BRASSINOSTEROID-INSENSITIVE2 (BIN2) can also potentiate auxin signalling output during lateral root organogenesis. BIN2-mediated phosphorylation of ARF7 and ARF19 suppresses their interaction with AUX/IAAs, and subsequently enhances the transcriptional activity to their target genes LATERAL ORGAN BOUNDARIES-DOMAIN16 (LBD16) and LBD29. In this context, BIN2 is under the control of the TRACHEARY ELEMENT DIFFERENTIATION INHIBITORY FACTOR (TDIF)-TDIF RECEPTOR (TDR) module. TDIF-initiated TDR signalling directly acts on BIN2-mediated ARF phosphorylation, leading to the regulation of auxin signalling during lateral root development. In summary, this study delineates a TDIF-TDR-BIN2 signalling cascade that controls regulation of ARF and AUX/IAA interaction independent of auxin perception during lateral root development.
- Keywords
- BOX PROTEIN TIR1; ARABIDOPSIS-THALIANA; SIGNAL-TRANSDUCTION; GSK3-LIKE KINASES; RECEPTOR; GROWTH; BIN2; BRASSINOSTEROIDS; INHIBITION; PATHWAYS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14971
- DOI
- 10.1038/NCB2893
- ISSN
- 1465-7392
- Article Type
- Article
- Citation
- Nature Cell Biology, vol. 16, no. 1, page. 66 - 76, 2014-01
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