Inhibice fotosyntézy řasy Klebsormidium sp. kultivované ve fotobioreaktoru: Analýza fotochemických a biochemických procesů v závislosti na opakovaném radiačním stresu
| Title in English | Inhibition of photosynthesis of the alga Klebsormidium sp. cultivated in photobioreactor: The analysis of photochemical and biochemical processes related to repetitive radiation stress. |
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| Year of publication | 2013 |
| Type | Appeared in Conference without Proceedings |
| MU Faculty or unit | |
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| Description | Numerous cosmopolitan algal species are eligible to survive in extreme environment conditions. In this study, we focused on evaluation of the effect of repetitive radiation stress on photosynthetic processes of green alga Klebsormidium sp. (CCALA, strain 859) originated form wetland surrounding the lake Monolith (James Ross Island, Antarctica). During cultivation (temperature 10°C; irradiance 100 micromol.m-2.s-1 ; 16/8h day/night) and exposition (repetitive 4h 3000 micromol.m-2.s-1), the changes in photosynthetic activity were recorded by measuring of chlorophyll fluorescence induction (Ft, Quantum yield) and changes of oxygen evolution rate (OER). The samples for pigment analysis (chl a, chl b and carotenoids) were collected during exposition period. The changes in monitored parameters showed progressive reduction of photosynthetic recovery rate after repetitive episodes of photoinhibition. High level of tolerance of photosynthetic apparatus of Klebsormidium to short-time radiation stress could be considered as well. |
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