The effect of phenols on the parameters of chlorophyll fluorescence and reactions of P^sub 700^ in green algae Scenedesmus quadricauda

The effect of phenolics, present in wastes of pulp and paper industry, on photosynthesis in microalgae Scenedesmus quadricauda has been studied, analyzing the induction curves of prompt and delayed chlorophyll fluorescence and light curves of nonphotochemical quenching of fluorescence. Energization...

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Published inBiophysics (Oxford) Vol. 59; no. 3; p. 374
Main Authors Matorin, D N, Plekhanov, S E, Bratkovskaya, L B, Yakovleva, O V, Alekseev, A A
Format Journal Article
LanguageEnglish
Published Moscow Springer Nature B.V 01.05.2014
Subjects
Algae
Biophysics
Chlorophyll
Fluorescence
Phenols
Photosynthesis
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Summary:The effect of phenolics, present in wastes of pulp and paper industry, on photosynthesis in microalgae Scenedesmus quadricauda has been studied, analyzing the induction curves of prompt and delayed chlorophyll fluorescence and light curves of nonphotochemical quenching of fluorescence. Energization of photosynthetic membranes was impaired at low concentrations (0.1 mM) of phenol and pyrocatechol. At higher concentrations, phenol and pyrocatechol inhibited electron transport in PS II and increased the share of Q^sub B^-nonreducing centers. As a result, the rate of P^sub 700^ reduction declined. These results indicate that the parameters of fluorescence induction curves can be used for detecting phenol and pyrocatechol in the environment at early stages of toxic effects.[PUBLICATION ABSTRACT]
ISSN:0006-3509
1555-6654
DOI:10.1134/S0006350914030166