Effects of light and temperature on sporangiophore initiation inPilobolus crystallinus(Wiggers) Tode

✍ Scribed by H. Kubo; H. Mihara

• Book ID: 104753009
• Publisher: Springer-Verlag
• Year: 1986
• Tongue: English
• Weight: 275 KB
• Volume: 168
• Category: Article
• ISSN: 0032-0935
• DOI: 10.1007/bf00392358

✦ Synopsis

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 Qlo of about 2 at lower temperatures and 8-11 at higher temperatures. The temperature at which the Qlo changed was the lower, the higher the fluence rate: 14~ at 8W/m 2, 19.5~ at 0.24W/m 2 and 24.5~ in darkness. Possible interpretations of these results are briefly presented.