ARTICLE DOI: 10.1038/s41467-018-03582-5 OPEN AUX1-mediated root hair auxin influx governs SCFTIR1/AFB-type Ca2+ signaling Julian Dindas1, Sönke Scherzer1, M. Rob G. Roelfsema1, Katharina von Meyer1, Heike M. Müller1, K.A.S. Al-Rasheid2, Klaus Palme3, Petra Dietrich 4, Dirk ...
Genomic analyses reveal the absence of the TIR1-Aux/IAA-ARF mediated auxin signaling pathway in green algae (Lau et al., 2009; Rensing et al., 2008; Riano-Pachon et al., 2008). On the contrary, putative ABP1 and IBR5 orthologs have been identified in green algae (Lau et al., ...
Disruptions in AUX1-dependent auxin influx alter hypocotyl phototropism in Arabidopsis. Molecular Plant 1: p.129-44.Stone B.B,Stowe-Evans E.L,Harper R.M,Celaya R.B,Ljung K,Sandberg G,Liscum E.Disruptions in AUX1-dependent auxin influx alter hypocotyl phototropism in Arabidopsis. Mol. Plan...
Auxin promotes the degradation of the AUX/IAA repressor through ubiquitin–proteasome pathway and consequently activates auxin-responsive gene expression by removing the inhibition of ARF activity. The auxin receptor TIR1 F-box protein directly links auxin perception to degradation of the AUX/IAA ...
The auxin-signaling pathway requires nucleus-localized IAA co-receptors, which associate with both TIR1 and Aux/IAA proteins. In the absence of IAA, Aux/IAA proteins repress downstream IAA responses through inhibitory coupling to auxin response factors (ARF). Upon IAA binding, the co-receptors ta...
The AUX1/LAX influx transporter protein family was originally found through the isolation of the Arabidopsis auxin resistant1 (aux1) mutant. aux1 roots are resistant to the membrane impermeable synthetic auxin, 2,4- dichlorophenoxyacetic acid (2,4-D), and show agravitropic growth as ...
Auxin signalling is mediated largely by the SCFTIR1E3 ubiquitin ligase complex (UPP complex) that accelerates AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA) repressor protein degradation in response to auxin [24–27]. The AUX/IAA repressor proteins are recognized and ubiquitinated by a ubiquitin-conjugation...
At the cellular level, auxin regulates cell division, cell expansion, and cellular differentiation [1]. Auxin largely exerts its action through a multistep signaling pathway: Aux/IAA proteins are repressors of the AUXIN RESPONSE FACTOR (ARF) transcription factors. Auxin directly binds to the ...
Cell surface ABP1–TMK auxin-sensing complex activates ROP GTPase signaling. Science 343, 1025–1028 (2014). Article ADS CAS Google Scholar Vandenbussche, F. et al. The auxin influx carriers AUX1 and LAX3 are involved in auxin-ethylene interactions during apical hook development in Arabidopsis...
1996. Mutations of Arabidopsis in potential transduction and response components of the phototropic signaling pathway. Plant Physiol. 112: 291–296. PubMed CAS Google Scholar Liscum, E. and Reed, J.W. 2002. Genetics of Aux/IAA and ARF action in plant growth and development. Plant Mol. ...