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Article

Functional analysis of HvSPY, a negative regulator of GA response, in barley aleurone cells and Arabidopsis.

Planta - 1 Feb 2009

Filardo Fiona, Robertson Masumi, Singh Davinder Pal, Parish Roger W, Swain Stephen M

Abstract excerpt

SPINDLY (SPY) is an important regulator of plant development, and consists of an N-half tetratricopeptide repeat (TPR) domain containing 10 TPR motifs and a C-half catalytic domain, similar to O-GlcNAc transferase (OGT) of animals. The best characterised role of SPY is a negative regulator of GA signalling, and all known spy alleles have been isolated based on increased GA response. Of the eight alleles that...

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Source

Identifiers

PMID: 19011896
DOI: 10.1007/s00425-008-0843-9

Genes

TPR
OGT

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 6 Sept 2026. Manifest publication-graph-cohort-2026-09-06.1.

Source receipt: pubmed, retrieved 6 Sept 2026.

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Functional analysis of HvSPY, a negative regulator of GA response, in barley aleurone cells and Arabidopsis.PMID 19011896Read ↗

Functional analysis of SPINDLY in gibberellin signaling in Arabidopsis.Semantic proximity Read ↗

Two transcription factors are negative regulators of gibberellin response in the HvSPY-signaling pathway in barley aleurone.Semantic proximity Read ↗

SPINDLY's role in the gibberellin response pathway.Semantic proximity Read ↗

Ectopic expression of the tetratricopeptide repeat domain of SPINDLY causes defects in gibberellin response.Semantic proximity Read ↗

Altered expression of SPINDLY affects gibberellin response and plant development.Semantic proximity Read ↗

SPINDLY, a tetratricopeptide repeat protein involved in gibberellin signal transduction in Arabidopsis.Semantic proximity Read ↗

SPINDLY is a nuclear-localized repressor of gibberellin signal transduction expressed throughout the plant.Semantic proximity Read ↗

SPINDLY, a negative regulator of gibberellic acid signaling, is involved in the plant abiotic stress response.Semantic proximity Read ↗

SECRET AGENT and SPINDLY have overlapping roles in the development of Arabidopsis thaliana L. Heyn.Semantic proximity Read ↗

Mutations at the SPINDLY locus of Arabidopsis alter gibberellin signal transduction.Semantic proximity Read ↗

SPINDLY and GIGANTEA interact and act in Arabidopsis thaliana pathways involved in light responses, flowering, and rhythms in cotyledon movements.Semantic proximity Read ↗

HvLEAFY controls the early stages of floral organ specification and inhibits the formation of multiple ovaries in barley.Semantic proximity Read ↗

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