Auxin perception and downstream events. (October 2016)

• Record Type: Journal Article
• Authors: Strader, Lucia C.; Zhao, Yunde
• Is Part Of: Current opinion in plant biology. Volume 33(2016)
• Page Start: 8
• Page End: 14
• Publication Date: 2016-10
• Subjects: Plant molecular biology -- Periodicals; 571.205
• DOI: 10.1016/j.pbi.2016.04.004
• Languages: English
• ISSNs: 1369-5266

Abstract

Highlights: Genetic evidence supporting the proposed roles for ABP1 in auxin signaling has been invalidated. The PIN auxin efflux carriers may be the missing auxin receptors for non-genomic auxin responses. Several mechanisms control SCF TIR1/AFB -Aux/IAA auxin receptor complex assembly and stability. Chromatin-remodeling and small RNAs participate in regulating auxin-mediated transcription. Abstract : Auxin responses have been arbitrarily divided into two categories: genomic and non-genomic effects. Genomic effects are largely mediated by SCF TIR1/AFB -Aux/IAA auxin receptor complexes whereas it has been postulated that AUXIN BINDING PROTEIN 1 (ABP1) controls the non-genomic effects. However, the roles of ABP1 in auxin signaling and plant development were recently called into question. In this paper, we present recent progress in understanding the SCF TIR1/AFB -Aux/IAA pathway. In more detail, we discuss the current understanding of ABP1 research and provide an updated view of ABP1-related genetic materials. Further, we propose a model in which auxin efflux carriers may play a role in auxin perception and we briefly describe recent insight on processes downstream of auxin perception.