Effects of increasing doses of UV-B radiation on photosynthesis and motility inChlamydomonas reinhardtii |
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Authors: | R A Danilov N G A Ekelund |
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Institution: | 1. Department of Applied Science, Mid Sweden University, 871 88, H?rn?sand, Sweden
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Abstract: | Effects of increasing doses of UV-B radiation on photosynthetic efficiency (PE) and motility inChlamydomonas reinhardtii were investigated. The exposure time ranged from 10 to 120 min at 0.73 W/m2 UV-B radiation. A decrease in compensation points (CP) was followed by an increase in PE on extending the UV-B treatment
up to 60 min. The subsequent increase in PE was accompanied by increasing CPs. Enhanced doses of UV-B radiation thus have
a stimulatory effect on the PE inC. reinhardtii. No inhibitory effects could be detected. No statistically significant differences in motility could be observed due to an
extremely high variation of values. |
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