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Term:far-red light signaling pathway
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Accession:GO:0010018 term browser browse the term
Definition:The series of molecular signals initiated upon sensing of far red light by a photoreceptor molecule. Far red light is electromagnetic radiation of wavelength 700-800nm. An example of this response is seen at the beginning of many plant species developmental stages. These include germination, and the point when cotyledon expansion is triggered. In certain species these processes take place in response to absorption of red light by the pigment molecule phytochrome, but the signal can be reversed by exposure to far red light. During the initial phase the phytochrome molecule is only present in the red light absorbing form, but on absorption of red light it changes to a far red light absorbing form, triggering progress through development. An immediate short period of exposure to far red light entirely returns the pigment to its initial state and prevents triggering of the developmental process. A thirty minute break between red and subsequent far red light exposure renders the red light effect irreversible, and development then occurs regardless of whether far red light exposure subsequently occurs.
Synonyms:exact_synonym: far red light signalling pathway;   far red signaling pathway;   far-red light signal transduction

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  biological_process 19692
    cellular process 18168
      signal transduction 7006
        red or far-red light signaling pathway 1
          far-red light signaling pathway 0
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  biological_process 19692
    cellular process 18168
      cellular response to stimulus 8639
        cellular response to environmental stimulus 443
          cellular response to abiotic stimulus 443
            cellular response to radiation 197
              cellular response to light stimulus 121
                cellular response to red or far red light 1
                  cellular response to far red light 0
                    far-red light signaling pathway 0
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