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ONTOLOGY REPORT - ANNOTATIONS


Term:response to far red light
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Accession:GO:0010218 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 far red light stimulus. 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: response to far red light stimulus



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  biological_process 19876
    response to stimulus 10557
      response to abiotic stimulus 1582
        response to radiation 560
          response to light stimulus 372
            response to red or far red light 1
              response to far red light 0
                cellular response to far red light + 0
                response to continuous far red light stimulus by the high-irradiance response system 0
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