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Article

The signal transducer NPH3 integrates the phototropin1 photosensor with PIN2-based polar auxin transport in Arabidopsis root phototropism.

The Plant cell - 1 Feb 2012

Wan Yinglang, Jasik Jan, Wang Li, Hao Huaiqing, Volkmann Dieter, Menzel Diedrik, Mancuso Stefano, Baluška František, Lin Jinxing

Abstract excerpt

Under blue light (BL) illumination, Arabidopsis thaliana roots grow away from the light source, showing a negative phototropic response. However, the mechanism of root phototropism is still unclear. Using a noninvasive microelectrode system, we showed that the BL sensor phototropin1 (phot1), the signal transducer NONPHOTOTROPIC HYPOCOTYL3 (NPH3), and the auxin efflux transporter PIN2 were essential for BL-induced...

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Identifiers

PMID: 22374399
DOI: 10.1105/tpc.111.094284
PMCID: PMC3315232

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 5 Sept 2026. Manifest publication-graph-cohort-2026-09-05.1.

Source receipt: pubmed, retrieved 5 Sept 2026.

Related research

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The signal transducer NPH3 integrates the phototropin1 photosensor with PIN2-based polar auxin transport in Arabidopsis root phototropism.PMID 22374399Read ↗

Phot2-regulated relocation of NPH3 mediates phototropic response to high-intensity blue light in Arabidopsis thaliana.Semantic proximity Read ↗

Phototropins function in high-intensity blue light-induced hypocotyl phototropism in Arabidopsis by altering cytosolic calcium.Semantic proximity Read ↗

Polar-localized NPH3-like proteins regulate polarity and endocytosis of PIN-FORMED auxin efflux carriers.Semantic proximity Read ↗

PIN3-mediated auxin transport contributes to blue light-induced adventitious root formation in Arabidopsis.Semantic proximity Read ↗

The blue light receptor Phototropin 1 suppresses lateral root growth by controlling cell elongation.Semantic proximity Read ↗

Disruptions in AUX1-dependent auxin influx alter hypocotyl phototropism in Arabidopsis.Semantic proximity Read ↗

Phototropism in Arabidopsis roots is mediated by two sensory systems.Semantic proximity Read ↗

phot1 inhibition of ABCB19 primes lateral auxin fluxes in the shoot apex required for phototropism.Semantic proximity Read ↗

Modulation of phototropic responsiveness in Arabidopsis through ubiquitination of phototropin 1 by the CUL3-Ring E3 ubiquitin ligase CRL3(NPH3).Semantic proximity Read ↗

The Rice COLEOPTILE PHOTOTROPISM1 gene encoding an ortholog of Arabidopsis NPH3 is required for phototropism of coleoptiles and lateral translocation of auxin.Semantic proximity Read ↗

Unexpected roles for cryptochrome 2 and phototropin revealed by high-resolution analysis of blue light-mediated hypocotyl growth inhibition.Semantic proximity Read ↗

Reversible phosphorylation of NPH3/RPT2-like proteins regulates phototropin receptor signaling.Semantic proximity Read ↗

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