Phycomyces: Stimulus Storage in Light-Initiated Reactions

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Science  25 Apr 1969:
Vol. 164, Issue 3878, pp. 427-428
DOI: 10.1126/science.164.3878.427


The sporangiophores of Phycomyces blakesleeanus, a unicellular fungus, increase their growth rate temporarily when given a symmetric light pulse. When a sporangiophore is cooled until normal growth stops, the light pulse can still be perceived, and, after the sporangiophore is warmed to room temperature, the normal light-growth response is observed. Thus stimulus information can be "stored" at low temperatures in this sensory system.

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