ArticleThe Plant cell2013
D6PK AGCVIII kinases are required for auxin transport and phototropic hypocotyl bending in Arabidopsis.
Article in The Plant cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.
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61 citing papers in PubMed, 155 citations in OpenAlex.
- Diethyl ether anesthesia inhibits phototropic response inPlant signaling & behavior · 2026Article
- Beyond membrane transport: Transporters as dynamic signal integrators for plant signaling and adaptation.Plant communications · 2026Review
- Arabidopsis ECHIDNA Plays an Important Role in Auxin Regulation of Clathrin-Mediated Trafficking During Root Gravitropism.Plant, cell & environment · 2026Article
- Identification of Reference Genes for RT-qPCR Assays inCurrent issues in molecular biology · 2026Article
- Reversible phosphorylation of NPH3/RPT2-like proteins regulates phototropin receptor signaling.The Plant cell · 2026Article
- An increase ofeLife · 2025Article
- Split-YFP-coupled interaction-dependent TurboID identifies new functions of basal cell polarity inProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Bending over backwards for soil emergence: KIPK and KIPK-LIKE1 regulate hypocotyl gravitropic growth.The Plant cell · 2025Article
- The protein kinases KIPK and KIPK-LIKE1 suppress overbending during negative hypocotyl gravitropic growth in Arabidopsis.The Plant cell · 2025Article
- Advances in Plant Auxin Biology: Synthesis, Metabolism, Signaling, Interaction with Other Hormones, and Roles under Abiotic Stress.Plants (Basel, Switzerland) · 2024Review
- Spatially heterogeneous selection and inter-varietal differentiation maintain population structure and local adaptation in a widespread conifer.BMC ecology and evolution · 2024Article
- Ectopic assembly of an auxin efflux control machinery shifts developmental trajectories.The Plant cell · 2024Article
- Genome-wide characterization and expression analysis of GATA transcription factors under combination of light wavelengths and drought stress in potato.Plant direct · 2024Article
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- D6PK plasma membrane polarity requires a repeated CXX(X)P motif and PDK1-dependent phosphorylation.Nature plants · 2024Article
- Regulation of tissue growth in plants - A mathematical modeling study on shade avoidance response inFrontiers in plant science · 2024Article
- Plasmodesmata callose binding protein 2 contributes to the regulation of cambium/phloem formation and auxin response during the tissue reunion process in incised Arabidopsis stem.Journal of plant research · 2023Article
- Local light signaling at the leaf tip drives remote differential petiole growth through auxin-gibberellin dynamics.Current biology : CB · 2023Article
- Endoreplication mediates cell size control via mechanochemical signaling from cell wall.Science advances · 2022Article
1 more citing papers are in PubMed but not listed here.
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Authors and funding
11 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Phototropic hypocotyl bending in response to blue light excitation is an important adaptive process that helps plants to optimize their exposure to light. In Arabidopsis thaliana, phototropic hypocotyl bending is initiated by the blue light receptors and protein kinases phototropin1 (phot1) and phot2. Phototropic responses also require auxin transport and were shown to be partially compromised in mutants of the PIN-FORMED (PIN) auxin efflux facilitators. We previously described the D6 PROTEIN KINASE (D6PK) subfamily of AGCVIII kinases, which we proposed to directly regulate PIN-mediated auxin transport. Here, we show that phototropic hypocotyl bending is strongly dependent on the activity of D6PKs and the PIN proteins PIN3, PIN4, and PIN7. While early blue light and phot-dependent signaling events are not affected by the loss of D6PKs, we detect a gradual loss of PIN3 phosphorylation in d6pk mutants of increasing complexity that is most severe in the d6pk d6pkl1 d6pkl2 d6pkl3 quadruple mutant. This is accompanied by a reduction of basipetal auxin transport in the hypocotyls of d6pk as well as in pin mutants. Based on our data, we propose that D6PK-dependent PIN regulation promotes auxin transport and that auxin transport in the hypocotyl is a prerequisite for phot1-dependent hypocotyl bending.
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