Photobiology: Light signal transduction and photomorphogenesis
نویسندگان
چکیده
منابع مشابه
Blue light receptors and signal transduction.
A plant blue light response was documented as early as 1881 by Darwin when he discovered what is now known as the blue light–induced phototropic response (Darwin, 1881). However, blue light receptors mediating phototropism and other photoresponses in plants have remained elusive until recently. On the basis of molecular genetic studies in Arabidopsis, it is clear now that there are two types of...
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Plants utilize several families of photoreceptors to fine-tune growth and development over a large range of environmental conditions. The UV-A/blue light sensing phototropins mediate several light responses enabling optimization of photosynthetic yields. The initial event occurring upon photon capture is a conformational change of the photoreceptor that activates its protein kinase activity. Th...
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Active brassinosteroids, such as brassinolide (BL) and castasterone, are growth promoting plant hormones. An Arabidopsis cytochrome p450 monooxygenase encoded by CYP72B1 has been implicated in brassinosteroid catabolism as well as photomorphogenesis. We expressed CYP72B1 in yeast, coupled with brassinosteroid feeding, and established the biochemical function to be the hydroxylation of BL and ca...
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Arabidopsis seedlings are genetically endowed with the capability to follow two distinct developmental programs: photomorphogenesis in the light and skotomorphogenesis in darkness. The regulatory protein CONSTITUTIVE PHOTOMORPHOGENlCl (COP1) has been postulated to act as a repressor of photomorphogenesis in the dark because lossof-function mutations of COPl result in dark-grown seedlings phenoc...
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Many photosynthetic microorganisms have evolved the ability to sense light quality and/or quantity and can steer themselves into optimal conditions within the environment. Phototaxis and gliding motility in unicellular cyanobacteria require type IV pili, which are multifunctional cell surface appendages. Screens for cells exhibiting aberrant motility uncovered several non-motile mutants as well...
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ژورنال
عنوان ژورنال: Journal of Integrative Plant Biology
سال: 2020
ISSN: 1672-9072,1744-7909
DOI: 10.1111/jipb.13004