ArticlePlant & cell physiology2012
Cryptochrome and phytochrome cooperatively but independently reduce active gibberellin content in rice seedlings under light irradiation.
Article in Plant & cell physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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28 citing papers in PubMed, 55 citations in OpenAlex.
- Blue Light Receptor PHR2-Mediated Spectrum Antiviral Immunity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Cryptochrome-mediated signaling in root development.The New phytologist · 2026Review
- Influence of photoperiod on endogenous phytohormone levels and cadmium-related gene expression inPlant signaling & behavior · 2025Article
- Hyperspectral imaging of grains uncovers the genetic architecture of nitrogen response of development in bread wheat.Molecular breeding : new strategies in plant improvement · 2025Article
- Comparing hormone dynamics in cereal crops via transient expression of hormone sensors.Plant & cell physiology · 2025Article
- Identification and Expression Characteristics of the Cryptochrome Gene Family inPlants (Basel, Switzerland) · 2025Article
- Photoperiodic and lighting treatments for flowering control and its genetic regulation in sugarcane breeding.Heliyon · 2024Review
- Paradise by the far-red light: Far-red and red:blue ratios independently affect yield, pigments, and carbohydrate production in lettuce,Frontiers in plant science · 2024Article
- Transcription elongation factors OsSPT4 and OsSPT5 are essential for rice growth and development and act with APO2.Plant cell reports · 2023Article
- Identification of a Rice Leaf Width GeneInternational journal of molecular sciences · 2023Article
- New insights into light spectral quality inhibits the plasticity elongation of maize mesocotyl and coleoptile during seed germination.Frontiers in plant science · 2023Article
- Crosstalk between the Circadian Clock and Histone Methylation.International journal of molecular sciences · 2022Article
- OsBIC1 Directly Interacts with OsCRYs to Regulate Leaf Sheath Length through Mediating GA-Responsive Pathway.International journal of molecular sciences · 2021Article
- Comparisons within the Rice GA 2-Oxidase Gene Family Revealed Three Dominant Paralogs and a Functional Attenuated Gene that Led to the Identification of Four Amino Acid Variants Associated with GA Deactivation Capability.Rice (New York, N.Y.) · 2021Article
- Response of Lignin Metabolism to Light Quality in Wheat Population.Frontiers in plant science · 2021Article
- Molecular basis of heading date control in rice.aBIOTECH · 2020Review
- Systematic Analysis of Cold Stress Response and Diurnal Rhythm Using Transcriptome Data in Rice Reveals the Molecular Networks Related to Various Biological Processes.International journal of molecular sciences · 2020Article
- Cryptochrome-mediated hypocotyl phototropism was regulated antagonistically by gibberellic acid and sucrose in Arabidopsis.Journal of integrative plant biology · 2020Article
- A Novel AP2/ERF Transcription Factor, OsRPH1, Negatively Regulates Plant Height in Rice.Frontiers in plant science · 2020Article
- Water impacts nutrient dose responses genome-wide to affect crop production.Nature communications · 2019Article
Corrections and comments
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In contrast to a wealth of knowledge about the photoregulation of gibberellin metabolism in dicots, that in monocots remains largely unclear. In this study, we found that a blue light signal triggers reduction of active gibberellin content in rice seedlings with simultaneous repression of two gibberellin 20-oxidase genes (OsGA20ox2 and OsGA20ox4) and acute induction of four gibberellin 2-oxidase genes (OsGA2ox4-OsGA2ox7). For further examination of the regulation of these genes, we established a series of cryptochrome-deficient lines through reverse genetic screening from a Tos17 mutant population and construction of knockdown lines based on an RNA interference technique. By using these lines and phytochrome mutants, we elucidated that cryptochrome 1 (cry1), consisting of two species in rice plants (cry1a and cry1b), is indispensable for robust induction of the GA2ox genes. On the other hand, repression of the GA20ox genes is mediated by phytochromes. In addition, we found that the phytochromes also mediate the repression of a gibberellin 3-oxidase gene (OsGA3ox2) in the light. These results imply that, in rice seedlings, phytochromes mediate the repression of gibberellin biosynthesis capacity, while cry1 mediates the induction of gibberellin inactivation capacity. The cry1 action was demonstrated to be dominant in the reduction of active gibberellin content, but, in rice seedlings, the cumulative effects of these independent actions reduced active gibberellin content in the light. This pathway design in which different types of photoreceptors independently but cooperatively regulate active gibberellin content is unique from the viewpoint of dicot research. This redundancy should provide robustness to the response in rice plants.
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