ArticlePlant physiology2013
Phototropins function in high-intensity blue light-induced hypocotyl phototropism in Arabidopsis by altering cytosolic calcium.
Article in Plant physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 81 citations in OpenAlex.
- Diethyl ether anesthesia inhibits phototropic response inPlant signaling & behavior · 2026Article
- MAcro Plant Projection Imaging (MAPPI): An open, scalable platform for whole-plant fluorescence real-time imaging.Science advances · 2026Article
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- Arabidopsis calcium-dependent protein kinases 4/5/6/11 negatively regulate hydrotropism via phosphorylation of MIZU-KUSSEI1.The Plant cell · 2024Article
- SlCPK27 cross-links SlHY5 and SlPIF4 in brassinosteroid-dependent photo- and thermo-morphogenesis in tomato.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Hydrogen peroxide mediates high-intensity blue light-induced hypocotyl phototropism of cotton seedlings.Stress biology · 2023Article
- The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants.Stress biology · 2022Review
- Application of Green-enhanced Nano-lantern as a bioluminescent ratiometric indicator for measurement of Arabidopsis thaliana root apoplastic fluid pH.Plant, cell & environment · 2022Article
- Light and Plant Growth Regulators on In Vitro Proliferation.Plants (Basel, Switzerland) · 2022Review
- Illuminating the hidden world of calcium ions in plants with a universe of indicators.Plant physiology · 2021Review
- Comparative transcriptomic analysis uncovers conserved pathways involved in adventitious root formation in poplar.Physiology and molecular biology of plants : an international journal of functional plant biology · 2021Article
- Arabidopsis Ca2+-ATPases 1, 2, and 7 in the endoplasmic reticulum contribute to growth and pollen fitness.Plant physiology · 2021Article
- Calcium Positively Mediates Blue Light-Induced Anthocyanin Accumulation in Hypocotyl of Soybean Sprouts.Frontiers in plant science · 2021Article
- Phototropin 1 Mediates High-Intensity Blue Light-Induced Chloroplast Accumulation Response in a Root Phototropism 2-Dependent Manner inFrontiers in plant science · 2021Article
- Global analysis of expression profile of members of DnaJ gene families involved in capsaicinoids synthesis in pepper (Capsicum annuum L).BMC plant biology · 2020Article
- Cryptochrome-mediated hypocotyl phototropism was regulated antagonistically by gibberellic acid and sucrose in Arabidopsis.Journal of integrative plant biology · 2020Article
- Chloroplast avoidance movement: a novel paradigm of ROS signalling.Photosynthesis research · 2020Review
- New Insights into Evolution of Plant Heat Shock Factors (Hsfs) and Expression Analysis of Tea Genes in Response to Abiotic Stresses.Plants (Basel, Switzerland) · 2020Article
- Low-Temperature Adaptation of the Snow AlgaFrontiers in microbiology · 2020Article
- Genomic Organization and Comparative Phylogenic Analysis of NBS-LRR Resistance Gene Family inEvolutionary bioinformatics online · 2020Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Phototropins (phot1 and phot2), the blue light receptors in plants, regulate hypocotyl phototropism in a fluence-dependent manner. Especially under high fluence rates of blue light (HBL), the redundant function mediated by both phot1 and phot2 drastically restricts the understanding of the roles of phot2. Here, systematic analysis of phototropin-related mutants and overexpression transgenic lines revealed that HBL specifically induced a transient increase in cytosolic Ca(2+) concentration ([Ca(2+)]cyt) in Arabidopsis (Arabidopsis thaliana) hypocotyls and that the increase in [Ca(2+)]cyt was primarily attributed to phot2. Pharmacological and genetic experiments illustrated that HBL-induced Ca(2+) increases were modulated differently by phot1 and phot2. Phot2 mediated the HBL-induced increase in [Ca(2+)]cyt mainly by an inner store-dependent Ca(2+)-release pathway, not by activating plasma membrane Ca(2+) channels. Further analysis showed that the increase in [Ca(2+)]cyt was possibly responsible for HBL-induced hypocotyl phototropism. An inhibitor of auxin efflux carrier exhibited significant inhibitions of both phototropism and increases in [Ca(2+)]cyt, which indicates that polar auxin transport is possibly involved in HBL-induced responses. Moreover, PHYTOCHROME KINASE SUBSTRATE1 (PKS1), the phototropin-related signaling element identified, interacted physically with phototropins, auxin efflux carrier PIN-FORMED1 and calcium-binding protein CALMODULIN4, in vitro and in vivo, respectively, and HBL-induced phototropism was impaired in pks multiple mutants, indicating the role of the PKS family in HBL-induced phototropism. Together, these results provide new insights into the functions of phototropins and highlight a potential integration point through which Ca(2+) signaling-related HBL modulates hypocotyl phototropic responses.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.