Many flowering plants (angiosperms) use a circadian rhythm together with photoreceptor protein, such as phytochrome or cryptochrome, to sense seasonal changes in night length, or photoperiod, which they take as signals to flower. (wikipedia.org)
It has been found that both cryptochrome and phytochrome abundance relies on light and the amount of cryptochrome can change depending on day-length. (wikipedia.org)
Modern biologists believe that it is the coincidence of the active forms of phytochrome or cryptochrome, created by light during the daytime, with the rhythms of the circadian clock that allows plants to measure the length of the night. (wikipedia.org)
Proton transfer to flavin stabilizes the signaling state of the blue light receptor plant cryptochrome. (uni-bielefeld.de)
UV-A/blue light cryptochrome photoreceptors also contribute to control plant adaptive responses such as photomorphogenesis, the developmental transition that seedlings undergo on their first exposure to light. (biomedcentral.com)
Modern biologists believe that it is the coincidence of the active forms of phytochrome or cryptochrome, created by light during the daytime, with the rhythms of the circadian clock that allows plants to measure the length of the night. (wikipedia.org)
Therefore, we wanted to investigate whether variants of the core circadian clock genes, cryptochrome circadian clocks 1 and 2 (CRY1 and CRY2), or those of protein kinase C, delta binding protein (PRKCDBP), which regulate the interactions and abundance of dimers of the period and cryptochrome proteins, are associated with metabolic syndrome or its components. (nih.gov)
2. Dual modes of CLOCK:BMAL1 inhibition mediated by Cryptochrome and Period proteins in the mammalian circadian clock. (nih.gov)
13. Rhythmic PER abundance defines a critical nodal point for negative feedback within the circadian clock mechanism. (nih.gov)
LED lights skew heavily toward the blue end of the spectrum, where cryptochrome and phototropins, plant photoreceptors responsible for regulating circadian rhythms, germination, direction of growth, and development, operate. (coloradogardener.com)
Cellular abundance1
We used translational switching to control CRY1 cellular abundance and found that low levels of CRY1 resulted in minimal relocalization of PER2, but yet, remarkably, were sufficient to initiate and maintain circadian rhythmicity. (cam.ac.uk)
Genes2
Using molecular biological methods, we have determined the relative abundance of various transcripts of genes during in vitro sepal ripening and in tomato fruit pericarp at three stages of development. (biomedcentral.com)
In mammalian clock cells, CLOCK and BMAL1 are the positive elements, activating transcription of many downstream genes including the negative elements, Period (Per) and Cryptochrome (Cry), whose products form an inhibitory complex. (fsu.edu)
Variants1
We expand the yeast optogenetic toolkit to include variants of the cryptochromes and enhanced Magnets, incorporate these light-sensitive dimerizers into split transcription factors, and automate illumination and measurement of cultures in a 96-well microplate format for high-throughput characterization. (optobase.org)
Clock1
19. Mammalian Period represses and de-represses transcription by displacing CLOCK-BMAL1 from promoters in a Cryptochrome-dependent manner. (nih.gov)
Found1
It has been found that both cryptochrome and phytochrome abundance relies on light and the amount of cryptochrome can change depending on day-length. (wikipedia.org)