EFFECT OF CHROMIUM(VI) ON PHOTOSYSTEM II ACTIVITY AND HETEROGENEITY OF SYNECHOCYSTIS SP. (CYANOPHYTA) STUDIED WITH IN VIVO CHLOROPHYLL FLUORESCENCE TESTS(1)

EFFECT OF CHROMIUM(VI) ON PHOTOSYSTEM II ACTIVITY AND HETEROGENEITY OF SYNECHOCYSTIS SP. (CYANOPHYTA) : STUDIED WITH IN VIVO CHLOROPHYLL FLUORESCENCE TESTS(1)

© 2009 Phycological Society of America.

Bibliographische Detailangaben
Veröffentlicht in:Journal of phycology. - 1966. - 45(2009), 2 vom: 19. Apr., Seite 386-94
1. Verfasser: Pan, Xiangliang (VerfasserIn)
Weitere Verfasser: Chen, Xi, Zhang, Daoyong, Wang, Jianlong, Deng, Chunnuan, Mu, Guijin, Zhu, Huaisong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Journal of phycology
Schlagworte:Journal Article Synechocystis sp. antenna heterogeneity chromate in vivo chlorophyll fluorescence photosystem II
Beschreibung
Zusammenfassung:© 2009 Phycological Society of America.
The inhibitory effect of Cr(VI) on the PSII of Synechocystis sp. was studied. Cr(VI) reduced O2 evolution and inhibited the water-splitting system in PSII. S-states test and flash induction test showed that Cr(VI) exposure increased the proportion of inactivated PSII (PSIIX ) and PSIIβ reaction centers, which increased the fluxes of dissipated energy. JIP test and QA (-) reoxidation test demonstrated that Cr(VI) treatment induces inhibition of electron transport from QA (-) to QB /QB (-) and accumulation of P680 (+) . More QA (-) had to be oxidized through S2 (QA QB )(-) charge recombination and oxidation by PQ9 molecules in PSII under Cr(VI) stress. These changes finally decreased the index of photosynthesis performance
Beschreibung:Date Completed 04.04.2016
Date Revised 01.04.2016
published: Print
Citation Status PubMed-not-MEDLINE
ISSN:0022-3646
DOI:10.1111/j.1529-8817.2009.00647.x