ArticlePlant communications2025
The CRY1-COP1-HY5 axis mediates blue-light regulation of Arabidopsis thermotolerance.
Article in Plant communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Photoreceptors as central hubs of developmental plasticity and environmental adaptation.Molecules and cells · 2026Review
- Cryptochrome-mediated signaling in root development.The New phytologist · 2026Review
- Auxin-Induced Adventitious Rooting in Pepper InvolvesPlants (Basel, Switzerland) · 2026Article
- Effects of monochromatic red and blue light on photosynthetic efficiency and nutritional quality in Chinese kale microgreens.Frontiers in plant science · 2026Article
- Genome-wide characterization of the wheat cryptochrome/photolyase family identifies TaCRY1b as a lamina-joint-associated protein interacting with TaLG2 and TaLG2L.Frontiers in plant science · 2026Article
- Article
- Genome-Wide Identification of theGenes · 2025Article
- Identification of key pathways and genes underlying melatonin-enhanced drought tolerance in cotton.PeerJ · 2025Article
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Authors and funding
8 authors.
Funding
Abstract
High-temperature stress, also referred to as heat stress, often has detrimental effects on plant growth and development. Phytochromes have been implicated in the regulation of plant heat-stress responses, but the role of blue-light receptors, such as cryptochromes, in plant blue-light-dependent heat-stress responses remains unclear. We found that cryptochrome 1 (CRY1) negatively regulates heat-stress tolerance (thermotolerance) in Arabidopsis. Heat stress represses CRY1 phosphorylation. Unphosphorylated CRY1 exhibits decreased activity in suppressing the interaction of CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) with ELONGATED HYPOCOTYL 5 (HY5), leading to excessive degradation of HY5 under heat stress in blue light. This reduction in HY5 protein levels subsequently relieves its repression of the transcription of HY5 target genes, especially the heat-shock transcription factors. Our study thus reveals a novel mechanism by which CRY1-mediated blue-light signaling suppresses plant thermotolerance and highlights the dual function of the CRY1-COP1-HY5 module in both light- and heat-stress signaling, providing insights into how plants integrate heat stress and light signals to optimize their survival under heat stress.
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