Cryptochrome 1 controls tomato development in response to blue light

Ninu, Luciano; Ahmad, Margaret; Miarelli, C.; Cashmore, Anthony R.; Giuliano, Giovanni

doi:10.1046/j.1365-313x.1999.00466.x

Cited by 84 publications

(63 citation statements)

References 28 publications

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“…Cryptochromes and DNA photolyases share similarities not only in amino acid sequences but also in chromophore composition and in the light-dependent nature of their respective biochemical activities. Cryptochromes appear to be evolutionarily derived from gene duplication events of ancestral photolyase genes, because many organisms, including Arabidopsis and Drosophila, are known to have both cryptochromes and photolyases, functioning as photoreceptors and DNA repair enzymes, respectively (Cashmore et al, 1999).…”

Section: Cryptochromes and Photomorphogenesismentioning

confidence: 99%

“…Cryptochromes, which were historically defined by their action spectra, are photolyase-like blue light receptors (Gressel, 1979;Briggs and Huala, 1999;Cashmore et al, 1999;Lin, 2000b). Most organisms examined to date have more than one cryptochrome, and different cryptochromes of the same organism often mediate related light responses.…”

Section: Cryptochrome Genes and Proteinsmentioning

confidence: 99%

“…There are two types of structurally related DNA photolyases, one (called photolyase) that repairs cyclobutane pyrimidine dimers and another (called 6-4 photolyase) that repairs pyrimidine-pyrimidine 6-4 photoproducts (Sancar, 1994(Sancar, , 2000. A phylogenetic analysis indicated that plant cryptochromes are more closely related to the photolyases than to the 6-4 photolyases, whereas animal cryptochromes are more closely related to 6-4 photolyases than to the photolyase (Cashmore et al, 1999). Therefore, it appears that plant cryptochromes and animal cryptochromes arose from independent gene duplications of their respective ancestral photolyase genes.…”

Section: Cryptochromes Are Photolyase-like Flavoproteinsmentioning

confidence: 99%

“…This article will focus on advances in our understanding of the functions and signal transductions of blue light receptors. It is not intended to cover every aspect of the field; readers are referred to other review articles for historical perspectives and a more comprehensive understanding of these photoreceptors (Briggs and Huala, 1999;Cashmore et al, 1999;Lin, 2000b;Sancar, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Blue Light Receptors and Signal Transduction

2002

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Section: Cryptochromes and Photomorphogenesismentioning

confidence: 99%

Section: Cryptochrome Genes and Proteinsmentioning

confidence: 99%

Section: Cryptochromes Are Photolyase-like Flavoproteinsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Blue Light Receptors and Signal Transduction

2002

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“…In Arabidopsis, CRY1 mediates mainly blue light control of deetiolation, whereas CRY2 regulates primarily photoperiodic flowering, defined here as the reaction to change flowering time in response to altered photoperiods (4,6,7). In addition to Arabidopsis, cryptochromes have also been studied in other plants, including algae (8), moss (9), fern (10), tomato (11,12), rapeseed (13), pea (14), and rice (15,16). Results of these studies indicate that cryptochromes in angiosperms generally regulate developmental aspects in ways that are similar to Arabidopsis.…”

mentioning

confidence: 99%

Association of the circadian rhythmic expression of GmCRY1a with a latitudinal cline in photoperiodic flowering of soybean

Zhang

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

124

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Photoperiodic control of flowering time is believed to affect latitudinal distribution of plants. The blue light receptor CRY2 regulates photoperiodic flowering in the experimental model plant Arabidopsis thaliana. However, it is unclear whether genetic variations affecting cryptochrome activity or expression is broadly associated with latitudinal distribution of plants. We report here an investigation of the function and expression of two cryptochromes in soybean, GmCRY1a and GmCRY2a. Soybean is a short-day (SD) crop commonly cultivated according to the photoperiodic sensitivity of cultivars. Both cultivated soybean (Glycine max) and its wild relative (G. soja) exhibit a strong latitudinal cline in photoperiodic flowering. Similar to their Arabidopsis counterparts, both GmCRY1a and GmCRY2a affected blue light inhibition of cell elongation, but only GmCRY2a underwent blue light-and 26S proteasome-dependent degradation. However, in contrast to Arabidopsis cryptochromes, soybean GmCRY1a, but not GmCRY2a, exhibited a strong activity promoting floral initiation, and the level of protein expression of GmCRY1a, but not GmCRY2a, oscillated with a circadian rhythm that has different phase characteristics in different photoperiods. Consistent with the hypothesis that GmCRY1a is a major regulator of photoperiodic flowering in soybean, the photoperiod-dependent circadian rhythmic expression of the GmCRY1a protein correlates with photoperiodic flowering and latitudinal distribution of soybean cultivars. We propose that genes affecting protein expression of the GmCRY1a protein play an important role in determining latitudinal distribution of soybeans.blue light ͉ cryptochrome ͉ photoperiodism ͉ photoreceptor

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Cryptochrome 2 extensively regulates transcription of the chloroplast genome in tomato

Facella

Carbone

Placido³

et al. 2017

FEBS Open Bio

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Light plays a key role in the regulation of many physiological processes required for plant and chloroplast development. Plant cryptochromes (crys) play an important role in monitoring, capturing, and transmitting the light stimuli. In this study, we analyzed the effects of CRY2 overexpression on transcription of tomato chloroplast genome by a tiling array, containing about 90 000 overlapping probes (5‐nucleotide resolution). We profiled transcription in leaves of wild‐type and CRY2‐overexpressing plants grown in a diurnal cycle, to generate a comprehensive map of chloroplast transcription and to monitor potential specific modulations of the chloroplast transcriptome induced by the overexpression of CRY2. Our results demonstrate that CRY2 is a master gene of transcriptional regulation in the tomato chloroplast. In fact, it modulates the day/night mRNA abundance of about 58% of the 114 ORFs. The effect of CRY2 includes a differential extension of some transcripts at their 5′‐end, according to the period of the day. We observed that the influence of CRY2 on chloroplast transcription is not limited to coding RNA; a great number of putative noncoding micro RNA also showed differential accumulation pattern. To our knowledge, this is the first study that highlights how a photoreceptor affects the day/night transcription of the chloroplast genome.

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Cryptochrome 1 controls tomato development in response to blue light

Abstract: SummaryCryptochrome genes (CRY) are a novel class of plant genes encoding proteins that bear a strong resemblance to photolyases, a rare class of flavoproteins that absorb light in the blue (B) and UV-A regions of the spectrum and utilise it for photorepair of UV-damaged DNA. In

Cited by 84 publications

References 28 publications

Blue Light Receptors and Signal Transduction

Blue Light Receptors and Signal Transduction

Association of the circadian rhythmic expression of GmCRY1a with a latitudinal cline in photoperiodic flowering of soybean

Cryptochrome 2 extensively regulates transcription of the chloroplast genome in tomato

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