ArticleJournal of experimental botany2013
Arabidopsis heterotrimeric G protein β subunit, AGB1, regulates brassinosteroid signalling independently of BZR1.
Article in Journal of experimental botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 28 citations in OpenAlex.
- Ethylene participates in strigolactone-triggered stomatal closure via Gα protein-activited hydrogen peroxide and hydrogen sulfide synthesis inFrontiers in plant science · 2026Article
- Proteomic profiling ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- G-Protein Phosphorylation: Aspects of Binding Specificity and Function in the Plant Kingdom.International journal of molecular sciences · 2022Review
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- Tomato and cotton G protein beta subunit mutants display constitutive autoimmune responses.Plant direct · 2021Article
- MdBZR1 regulates ABA response by modulating the expression of MdABI5 in apple.Plant cell reports · 2021Article
- A transcriptional hub integrating gibberellin-brassinosteroid signals to promote seed germination in Arabidopsis.Journal of experimental botany · 2021Article
- The heterotrimeric G protein β subunit RGB1 is required for seedling formation in rice.Rice (New York, N.Y.) · 2019Article
- The Role of Gβ Protein in Controlling Cell Expansion via Potential Interaction with Lipid Metabolic Pathways.Plant physiology · 2019Article
- Rice ERECT LEAF 1 acts in an alternative brassinosteroid signaling pathway independent of the receptor kinase OsBRI1.Plant signaling & behavior · 2017Article
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- Article
- BRASSINOSTEROID INSENSITIVE2 interacts with ABSCISIC ACID INSENSITIVE5 to mediate the antagonism of brassinosteroids to abscisic acid during seed germination in Arabidopsis.The Plant cell · 2014Article
- Growth attenuation under saline stress is mediated by the heterotrimeric G protein complex.BMC plant biology · 2014Article
- Heterotrimeric G proteins in green algae: an early innovation in the evolution of the plant lineage.Plant signaling & behavior · 2014Article
- Abscisic acid-responsive guard cell metabolomes of Arabidopsis wild-type and gpa1 G-protein mutants.The Plant cell · 2013Article
- The Arabidopsis adaptor protein AP-3μ interacts with the G-protein β subunit AGB1 and is involved in abscisic acid regulation of germination and post-germination development.Journal of experimental botany · 2013Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Arabidopsis thaliana heterotrimeric G protein β subunit, AGB1, is involved in both abscisic acid (ABA) signalling and brassinosteroid (BR) signalling, but it is unclear how AGB1 regulates these signalling pathways. A key transcription factor downstream of BR, BZR1, and its gain-of-function mutant, bzr1-1, were overexpressed in an AGB1-null mutant, agb1-1, to examine their effects on the BR hyposensitivity and the ABA hypersensitivity of agb1-1, and to examine whether AGB1 regulates the functions of BZR1. Because the amino acid sequence of AGB1 contains 17 putative modification motifs of glycogen synthase kinase 3/SHAGGY-like protein kinases (GSKs), which are known components of BR signalling, the interaction between AGB1 and one of the Arabidopsis GSKs, BIN2, was examined. Expression of bzr1-1 alleviated the effects of a BR biosynthesis inhibitor, brassinazole, in both the wild type and agb1-1, and overexpression of BZR1 alleviated the effects of ABA in both the wild type and agb1-1. AGB1 did not affect the phosphorylation state of BZR1 in vivo. AGB1 interacted with BIN2 in vitro, but did not affect the phosphorylation state of BIN2. The results suggest that AGB1 interacts with BIN2, but regulates the BR signalling in a BZR1-independent manner.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.