ArticleJournal of plant research2016
Arabidopsis phot1 and phot2 phosphorylate BLUS1 kinase with different efficiencies in stomatal opening.
Article in Journal of plant research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Molecular Mechanisms and Experimental Strategies for Understanding Plant Drought Response.Plants (Basel, Switzerland) · 2026Review
- Phototropin phosphorylation of ROOT PHOTOTROPISM 2 and its role in mediating phototropism, leaf positioning, and chloroplast accumulation movement in Arabidopsis.The Plant journal : for cell and molecular biology · 2023Article
- FKF1 Interacts with CHUP1 and Regulates Chloroplast Movement in Arabidopsis.Plants (Basel, Switzerland) · 2023Article
- Review
- Proton and calcium pumping P-type ATPases and their regulation of plant responses to the environment.Plant physiology · 2021Review
- Isotopically Dimethyl Labeling-Based Quantitative Proteomic Analysis of Phosphoproteomes of Soybean Cultivars.Biomolecules · 2021Article
- A BLUS1 kinase signal and a decrease in intercellular CO2 concentration are necessary for stomatal opening in response to blue light.The Plant cell · 2021Article
- An ATP-Binding Cassette Transporter, ABCB19, Regulates Leaf Position and Morphology during Phototropin1-Mediated Blue Light Responses.Plant physiology · 2020Article
- A Synthetic Cytokinin Improves Photosynthesis in Rice under Drought Stress by Modulating the Abundance of Proteins Related to Stomatal Conductance, Chlorophyll Contents, and Rubisco Activity.Plants (Basel, Switzerland) · 2020Article
- Role of blue and red light in stomatal dynamic behaviour.Journal of experimental botany · 2020Review
- Chloroplast avoidance movement: a novel paradigm of ROS signalling.Photosynthesis research · 2020Review
- Expanding the Mitogen-Activated Protein Kinase (MAPK) Universe: An Update on MAP4Ks.Frontiers in plant science · 2020Review
- Does Molecular and Structural Evolution Shape the Speedy Grass Stomata?Frontiers in plant science · 2020Review
- Light-Mediated Signaling and Metabolic Changes Coordinate Stomatal Opening and Closure.Frontiers in plant science · 2020Review
- Molecular Evolution and Interaction of Membrane Transport and Photoreception in Plants.Frontiers in genetics · 2019Review
- A phosphorylation switch turns a positive regulator of phototropism into an inhibitor of the process.Nature communications · 2018Article
- A chemical genetic approach to engineer phototropin kinases for substrate labeling.The Journal of biological chemistry · 2018Article
- Blue Light Regulation of Stomatal Opening and the Plasma Membrane HPlant physiology · 2017Review
- The Membrane Transport System of the Guard Cell and Its Integration for Stomatal Dynamics.Plant physiology · 2017Review
- The Role of ENHANCED RESPONSES TO ABA1 (ERA1) in Arabidopsis Stomatal Responses Is Beyond ABA Signaling.Plant physiology · 2017Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In Arabidopsis thaliana, phototropins (phot1 and phot2), light-activated receptor kinases, redundantly regulate various photoresponses such as phototropism, chloroplast photorelocation movement, stomatal opening, and leaf flattening. However, it is still unclear how phot1 and phot2 signals are integrated into a common target and regulate physiological responses. In the present study, we provide evidence that phot1 and phot2 phosphorylate BLUE LIGHT SIGNALING1 (BLUS1) kinase as a common substrate in stomatal opening. Biochemical analysis revealed that the recombinant phot2 protein directly phosphorylated BLUS1 in vitro in a blue light-dependent manner, as reported for phot1. BLUS1 phosphorylation was observed in both phot1 and phot2 mutants, and phot2 mutant exhibited higher phosphorylation of BLUS1 than did phot1 mutant. Transgenic plants expressing phot1-GFP (P1G) and phot2-GFP (P2G) at a similar level under the PHOT2 promoter demonstrated that P1G initiated higher phosphorylation of BLUS1 than P2G, suggesting that phot1 phosphorylates BLUS1 more efficiently. Similarly, P1G mediated a higher activation of the plasma membrane H(+)-ATPase and stomatal opening than P2G, indicating that the phosphorylation status of BLUS1 is a key determinant of physiological response. Together, these findings provide insights into the signal integration and different properties of phot1 and phot2 signaling.
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