| photobiology in the zygomycota: multiple photoreceptor genes for complex responses to light. | light is an environmental signal that modulates many aspects of the biology of zygomycete fungi. light regulation has been investigated in the zygomycetes phycomyces blakesleeanus, mucor circinelloides and pilobolus crystallinus. examples of light regulation include the phototropism of the fruiting bodies, the regulation of the development of reproductive structures, and the activation of the biosynthesis of β-carotene. in fungi blue light is perceived by proteins homologous to wc-1, a neurospor ... | 2010 | 20466063 |
| blue-light-induced shift of the phototropic fluence-response curve in pilobolus sporangiophores. | the effects of preirradiation with blue light on the shift of the fluence-response curve for the first and the second positive curvatures were examined in pilobolus crystallinus (wiggers) tode sporangiophores. a 1-min preirradiation with blue light at 47 or 960 nmol·m(-2) lowered the fluence-response curve for the first positive curvature and shifted the peak to a higher fluence. the fluence-response curve was shifted back to a lower fluence when a dark period was inserted between the preirradia ... | 1989 | 24201657 |
| phototropic fluence-response curves for pilobolus crystallinus sporangiophore. | fluence-response relationships were examined for positive and negative phototropism induced by blue (450 nm) and ultraviolet-b (uv-b, 280 nm) light, respectively, in the pilobolus crystallinus sporangiophore. fluence-response curves for both blue and uv-b light obtained by changing the fluence by varying exposure time only showed the classical first and second positive bending. however, fluence-response curves obtained by varying the fluence rate were bell-shaped irrespective of the length of th ... | 1988 | 24221473 |
| effects of light and temperature on sporangiophore initiation in pilobolus crystallinus (wiggers) tode. | sporangiophore initiation in pilobolus crystallinus grown in white light was induced by either a dark or a low-temperature treatment. the period of darkness necessary to induce sporangiophore initiation was shortened by lowering the temperature. arrhenius plots for the sporangiophore-suppressing reaction in both light and darkness consisted of two straight lines with a q10 of about 2 at lower temperatures and 8-11 at higher temperatures. the temperature at which the q10 changed was the lower, th ... | 1986 | 24232142 |