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Term Information

Accession
GO:0009639
Name
response to red or far red light
Ontology
biological_process
Synonyms
None
Alternate IDs
None
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. Source: GOC:mtg_far_red, GOC:ai
Comment
None
History
See term history for GO:0009639 at QuickGO
Subset
None
Feedback
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Graph of GO:0009639

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Parents of response to red or far red light (GO:0009639)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
response to red or far red light [is_a relation] is_a  response to light stimulus (GO:0009416)
Children of response to red or far red light (GO:0009639)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
response to far red light (GO:0010218) [is_a relation] is_a  response to red or far red light
shade avoidance (GO:0009641) [is_a relation] is_a  response to red or far red light
photomorphogenesis (GO:0009640) [is_a relation] is_a  response to red or far red light
response to red light (GO:0010114) [is_a relation] is_a  response to red or far red light
cellular response to red or far red light (GO:0071489) [is_a relation] is_a  response to red or far red light
regulation of response to red or far red light (GO:2000030) [RO:0002211 relation] RO:0002211  response to red or far red light
None.