[Study of the effect of methylmercury and copper ions on primary photosynthesis processes in the green algae Chlamydomonas moevusii using the parameters of kinetic curves of the variable of chlorophyll fluorescence].
The effect of methylmercury and copper ions on the kinetics of light induction and dark relaxation of the variable of chlorophyll a fluorescence has been studied on cultures of the microalgae Chlamydomonas moevusii. It was shown that the toxicants added at concentrations that induce no decrease in photochemical activity of PS II (F(v)/F(M)) affect the electron transport on the acceptor side of PS II, the nonphotochemical quenching of excitation in the antenna, and the reoxidation of the quinone pool. At low concentrations, methylmercury produced a more toxic effect. The results obtained indicate that this approach can be used for detecting the changes in plant and algae cells at the early stages of the action of toxicants.
T K
TK
Antal
E E
EE
Graevskaia
D N
DN
Matorin
A A
AA
Volgusheva
V A
VA
Osipov
T E
TE
Krendeleeva
A B
AB
Rubin
D000818:Animals; D000931:Antidotes / Q000494:pharmacology*; D002696:Chlamydomonas / Q000378:metabolism*; D002734:Chlorophyll / Q000378:metabolism*; D000077194:Chlorophyll A; D019327:Copper Sulfate / Q000494:pharmacology*; D004579:Electron Transport / Q000187:drug effects; D007700:Kinetics; D008767:Methylmercury Compounds / Q000494:pharmacology*; D010084:Oxidation-Reduction / Q000187:drug effects; D010788:Photosynthesis / Q000187:drug effects*; D045332:Photosystem II Protein Complex / Q000378:metabolism*
D000931:Antidotes; D008767:Methylmercury Compounds; D045332:Photosystem II Protein Complex; D002734:Chlorophyll; D019327:Copper Sulfate; C004925:methylmercuric chloride; D000077194:Chlorophyll A