Effects of cold periods on the stimulus-response system of Phycomyces.
The sporangiophores of Phycomyces do not exhibit phototropic responses when growth is arrested reversibly by cooling to 1 degrees C. Unilateral UV stimuli (254 nm) applied during cold periods are stored for at least 2 hr and produce tropic responses away from the light after warm-up. During the cold period dark adaptation proceeds at a rate which decreases with the temperature.
D000222:Adaptation, Physiological; D003080:Cold Temperature; D003624:Darkness; D005658:Fungi / Q000254:growth & development / Q000502:physiology* / Q000528:radiation effects; D006813:Humidity; D007700:Kinetics; D008027:Light; D014466:Ultraviolet Rays