Light Inhibits Flagellation in a Chlamydomonas Mutant

概要

論文の詳細を見る
We have isolated a new flagellar mutant in Chlamydomonas reinhardtii. When the mutant was cultured under the white fluorescent lamp (〜4,800 lux), most cells had no flagella. How-ever, when the cultures were put in the dark, flagellation occurred. Greater than 70% of the cells had flagella within 12-16 h after the transfer. The flagellar morphology varied from "rod-shape" (same as the wild type flagella) to "disk shape". The disk-shaped flagella had the axonemes which were curved into a loop within the swollen membrane. Hence, this mutant is called loop-1. Light-inhibition of flagellation was restored in the presence of 10^<-5>M DCMU. The spectral dependency of the photo-inhibition of flagellation, determined using the Okazaki Large Spectrograph, showed maximal effectiveness at 400-20 nm and 600-80 nm. These results suggest that photosynthesis inhibits flagellation of loop-1 cells.
日本植物生理学会の論文