Developmental roles of Auxin Binding Protein 1 in Arabidopsis thaliana
Jazyk angličtina Země Irsko Médium print-electronic
Typ dokumentu časopisecké články
Grantová podpora
I 3630
Austrian Science Fund FWF - Austria
P 29988
Austrian Science Fund FWF - Austria
PubMed
33487339
DOI
10.1016/j.plantsci.2020.110750
PII: S0168-9452(20)30356-3
Knihovny.cz E-zdroje
- Klíčová slova
- AUXIN BINDING PROTEIN 1 (ABP1), Auxin, Auxin signaling, Plant development,
- MeSH
- Arabidopsis růst a vývoj metabolismus MeSH
- hypokotyl růst a vývoj metabolismus MeSH
- konfokální mikroskopie MeSH
- kořeny rostlin růst a vývoj metabolismus MeSH
- kvantitativní polymerázová řetězová reakce MeSH
- kyseliny indoloctové metabolismus MeSH
- proteiny huseníčku metabolismus fyziologie MeSH
- protoplasty metabolismus MeSH
- receptory buněčného povrchu metabolismus fyziologie MeSH
- regulace genové exprese u rostlin MeSH
- regulátory růstu rostlin metabolismus fyziologie MeSH
- rostlinné proteiny metabolismus fyziologie MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- auxin-binding protein 1 MeSH Prohlížeč
- kyseliny indoloctové MeSH
- proteiny huseníčku MeSH
- receptory buněčného povrchu MeSH
- regulátory růstu rostlin MeSH
- rostlinné proteiny MeSH
Auxin is a major plant growth regulator, but current models on auxin perception and signaling cannot explain the whole plethora of auxin effects, in particular those associated with rapid responses. A possible candidate for a component of additional auxin perception mechanisms is the AUXIN BINDING PROTEIN 1 (ABP1), whose function in planta remains unclear. Here we combined expression analysis with gain- and loss-of-function approaches to analyze the role of ABP1 in plant development. ABP1 shows a broad expression largely overlapping with, but not regulated by, transcriptional auxin response activity. Furthermore, ABP1 activity is not essential for the transcriptional auxin signaling. Genetic in planta analysis revealed that abp1 loss-of-function mutants show largely normal development with minor defects in bolting. On the other hand, ABP1 gain-of-function alleles show a broad range of growth and developmental defects, including root and hypocotyl growth and bending, lateral root and leaf development, bolting, as well as response to heat stress. At the cellular level, ABP1 gain-of-function leads to impaired auxin effect on PIN polar distribution and affects BFA-sensitive PIN intracellular aggregation. The gain-of-function analysis suggests a broad, but still mechanistically unclear involvement of ABP1 in plant development, possibly masked in abp1 loss-of-function mutants by a functional redundancy.
Institute of Science and Technology Am Campus 1 3400 Klosterneuburg Austria
Institute of Science and Technology Muthgasse 18 1190 Vienna Austria
Citace poskytuje Crossref.org
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