ArticlePlant physiology2007
Genome-wide gene expression analysis reveals a critical role for CRYPTOCHROME1 in the response of Arabidopsis to high irradiance.
Article in Plant physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 124 papers.
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124 citing papers in PubMed, 255 citations in OpenAlex.
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- Role of CIA2 and CIL in the Regulation of Chloroplast Development During Photomorphogenesis in Arabidopsis.Cells · 2026Article
- Physiological and molecular responses of Pyropia yezoensis thallus to high-light stress.BMC plant biology · 2025Article
- Melatonin at Crossroads with Phytohormones: Interactions Under High Light Stress.International journal of molecular sciences · 2025Article
- Protection of Photosynthesis by UVR8 and Cryptochromes in Arabidopsis Under Blue and UV Radiation.Plant, cell & environment · 2025Article
- Photoreceptors Are Involved in Antioxidant Effects of Melatonin Under High Light inAntioxidants (Basel, Switzerland) · 2025Article
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- Adaptive responses of plants to light stress: mechanisms of photoprotection and acclimation. A review.Frontiers in plant science · 2025Review
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- Microbe-induced coordination of plant iron-sulfur metabolism enhances high-light-stress tolerance of Arabidopsis.Plant communications · 2024Article
- Effects of light regimes on circadian gene co-expression networks inPlant direct · 2024Article
- The Role of Pigments and Cryptochrome 1 in the Adaptation ofAntioxidants (Basel, Switzerland) · 2024Article
- Root-specific photoreception directs early root development by HY5-regulated ROS balance.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Article
- Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes inPhotosynthetica · 2024Article
- GmPLP1 negatively regulates soybean resistance to high light stress by modulating photosynthetic capacity and reactive oxygen species accumulation in a blue light-dependent manner.Plant biotechnology journal · 2023Article
64 more citing papers are in PubMed but not listed here.
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5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Exposure to high irradiance results in dramatic changes in nuclear gene expression in plants. However, little is known about the mechanisms by which changes in irradiance are sensed and how the information is transduced to the nucleus to initiate the genetic response. To investigate whether the photoreceptors are involved in the response to high irradiance, we analyzed expression of EARLY LIGHT-INDUCIBLE PROTEIN1 (ELIP1), ELIP2, ASCORBATE PEROXIDASE2 (APX2), and LIGHT-HARVESTING CHLOROPHYLL A/B-BINDING PROTEIN2.4 (LHCB2.4) in the phytochrome A (phyA), phyB, cryptochrome1 (cry1), and cry2 photoreceptor mutants and long hypocotyl5 (hy5) and HY5 homolog (hyh) transcription factor mutants. Following exposure to high intensity white light for 3 h (1,000 mumol quanta m(-2) s(-1)) expression of ELIP1/2 and APX2 was strongly induced and LHCB2.4 expression repressed in wild type. The cry1 and hy5 mutants showed specific misregulation of ELIP1/2, and we show that the induction of ELIP1/2 expression is mediated via CRY1 in a blue light intensity-dependent manner. Furthermore, using the Affymetrix Arabidopsis (Arabidopsis thaliana) 24 K Gene-Chip, we showed that 77 of the high light-responsive genes are regulated via CRY1, and 26 of those genes were also HY5 dependent. As a consequence of the misregulation of these genes, the cry1 mutant displayed a high irradiance-sensitive phenotype with significant photoinactivation of photosystem II, indicated by reduced maximal fluorescence ratio. Thus, we describe a novel function of CRY1 in mediating plant responses to high irradiances that is essential to the induction of photoprotective mechanisms. This indicates that high irradiance can be sensed in a chloroplast-independent manner by a cytosolic/nucleic component.
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