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Term:response to red or far red light
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Accession:GO:0009639 term browser browse the term
Definition:Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a red or far red light stimulus. Red light is electromagnetic radiation of wavelength of 580-700nm. 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.

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red, far-red light phototransduction term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Rho rhodopsin ISO RGD PMID:2525480 RGD:6893558 NCBI chrNW_004624872:523,892...528,278
Ensembl chrNW_004624872:523,912...527,615
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Term Annotations click to browse term
  biological_process 15028
    response to stimulus 8118
      response to abiotic stimulus 1415
        response to radiation 493
          response to light stimulus 351
            response to red or far red light 1
              cellular response to red or far red light + 1
              photomorphogenesis + 0
              regulation of response to red or far red light + 0
              response to far red light + 0
              response to red light + 0
              shade avoidance + 0
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