Effect of silver nanoparticles on the parameters of chlorophyll fluorescence and P700 reaction in the green alga Chlamydomonas reinhardtii |
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| Authors: | D N Matorin D A Todorenko N Kh Seifullina B K Zayadan A B Rubin |
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| Institution: | 1. Faculty of Biology, Moscow State University, Moscow, Russia
2. Al-Farabi Kazakhstan National University, Alma-Aty, Kazakhstan
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| Abstract: | Acute toxicity of silver nanoparticle (AgNP) for photosynthesis in Chlamydomonas reinhardtii was studied using an M-PEA2 fluorimeter. Analysis of the fluorescence induction curves in the presence of AgNP at low concentrations revealed inhibited electron transport on the PS2 photosystem and increased content of QB-nonreducing centers. No direct effect of AgNP on the reactions of P700 oxidation in PS1 was found, while the energization of the photosynthetic membranes was affected. Investigation of the parameters of the prompt and delayed fluorescence is proposed as a method for early detection of AgNP in the environment. |
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