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Article

PINOID kinase regulates root gravitropism through modulation of PIN2-dependent basipetal auxin transport in Arabidopsis.

Plant physiology - 1 Jun 2009

Sukumar Poornima, Edwards Karin S, Rahman Abidur, Delong Alison, Muday Gloria K

Abstract excerpt

Reversible protein phosphorylation is a key regulatory mechanism governing polar auxin transport. We characterized the auxin transport and gravitropic phenotypes of the pinoid-9 (pid-9) mutant of Arabidopsis (Arabidopsis thaliana) and tested the hypothesis that phosphorylation mediated by PID kinase and dephosphorylation regulated by the ROOTS CURL IN NAPHTHYLPHTHALAMIC ACID1 (RCN1) protein might antagonistically...

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Identifiers

PMID: 19363095
DOI: 10.1104/pp.108.131607
PMCID: PMC2689958

Genes

RCN1

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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Research trail→

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PINOID kinase regulates root gravitropism through modulation of PIN2-dependent basipetal auxin transport in Arabidopsis.PMID 19363095Read ↗

Genetic and chemical reductions in protein phosphatase activity alter auxin transport, gravity response, and lateral root growth.Semantic proximity Read ↗

Complex regulation of Arabidopsis AGR1/PIN2-mediated root gravitropic response and basipetal auxin transport by cantharidin-sensitive protein phosphatases.Semantic proximity Read ↗

PIN phosphorylation is sufficient to mediate PIN polarity and direct auxin transport.Semantic proximity Read ↗

The polarly localized D6 PROTEIN KINASE is required for efficient auxin transport in Arabidopsis thaliana.Semantic proximity Read ↗

Antagonistic regulation of PIN phosphorylation by PP2A and PINOID directs auxin flux.Semantic proximity Read ↗

Flavonol-induced changes in PIN2 polarity and auxin transport in the Arabidopsis thaliana rol1-2 mutant require phosphatase activity.Semantic proximity Read ↗

GNOM regulates root hydrotropism and phototropism independently of PIN-mediated auxin transport.Semantic proximity Read ↗

Inactivation of plasma membrane-localized CDPK-RELATED KINASE5 decelerates PIN2 exocytosis and root gravitropic response in Arabidopsis.Semantic proximity Read ↗

A mutation in protein phosphatase 2A regulatory subunit A affects auxin transport in Arabidopsis.Semantic proximity Read ↗

Roles of AGCVIII Kinases in the Hypocotyl Phototropism of Arabidopsis Seedlings.Semantic proximity Read ↗

A PP6-type phosphatase holoenzyme directly regulates PIN phosphorylation and auxin efflux in Arabidopsis.Semantic proximity Read ↗

PINOID AGC kinases are necessary for phytochrome-mediated enhancement of hypocotyl phototropism in Arabidopsis.Semantic proximity Read ↗

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