Light-sensing phytochromes feel the heat.
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منابع مشابه
Light signals, phytochromes and cross-talk with other environmental cues.
Plants have evolved highly complex sensory mechanisms to monitor their surroundings and adapt their growth and development to the prevailing environmental conditions. The integration of information from multiple environmental cues enables the co-ordination of development with favourable seasonal conditions and, ultimately, determines plant form. Light signals, perceived via the phytochrome, cry...
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Plant responses to red and far-red light are mediated by a family of photoreceptors called phytochromes. In Arabidopsis thaliana, there are genes encoding at least five phytochromes, and it is of interest to learn if the different phytochromes have overlapping or distinct functions. To address this question for two of the phytochromes in Arabidopsis, we have compared light responses of the wild...
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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...
متن کاملPhytochromes inhibit hypocotyl negative gravitropism by regulating the development of endodermal amyloplasts through phytochrome-interacting factors.
Phytochromes are red and far-red light photoreceptors that regulate various aspects of plant development. One of the less-understood roles of phytochromes is the inhibition of hypocotyl negative gravitropism, which refers to the loss of hypocotyl gravitropism and resulting random growth direction in red or far-red light. This light response allows seedlings to curve toward blue light after emer...
متن کاملPrimer Red light sensing in plants
Introduction Plants depend on light as their sole source of energy. Consequently, plants will achieve optimal fitness only if they are also able to coordinate their growth and metabolism with their light environment. To enable this coordination, plants have developed a series of photoreceptors that allow them to sense light from the UV-B to the near far-red. The red to near farred region of the...
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عنوان ژورنال:
- Science
دوره 354 6314 شماره
صفحات -
تاریخ انتشار 2016