Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii.

Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii. Research Abstract Details 

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Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii. Abstract Text:

Taras K Antal,Tatyana E Krendeleva,Andrew B Rubin,Taras K Antal,Tatyana E Krendeleva,Andrew B Rubin,

A set of chlorophyll fluorescence methods, including PEA (Plant Efficiency Analyser), PAM (Pulse Amplitude Modulated fluorometer), and picosecond fluorometer, was employed to study PS 2 heterogeneity in sulfur deprived green algae Chlamydomonas reinhardtii. The regression method and JIP test were applied to analyze chlorophyll fluorescence kinetics. The fractions of PS 2 characterized by the energetic disconnection, smaller antenna size, elevated constant rate of primary photochemistry, and inability to maintain DeltapH-dependent energy dissipation increased essentially already after 12 h of incubation in sulfur depleted medium. The amount of PS 2 centers with reduced QA (closed state), QB-non-reducing centers with impaired water splitting function, and centers coupled to the plastoquinone pool with the slow cycle rate increased dramatically after 24 h period of deprivation. The mechanisms of PS 2 inactivation under sulfur deprivation are discussed.

Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii. Publishing Authors By Initials

TK Antal,TE Krendeleva,AB Rubin,TK Antal,TE Krendeleva,AB Rubin,

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Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Photosynthesis research

VOLUME: 94

Page Numbers: 13-22

Journal Abbreviation: Photosyn. Res.

ISSN: 0166-8595

DAY: 15

MONTH: 08

YEAR: 2007

Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Study of photosystem 2 heterogeneity in the sulfur-deficient green alga Chlamydomonas reinhardtii.

AFFILIATION: Biological Faculty, Moscow State University, Vorobyevi Gory, Moscow 119992, Russia. taras@biophys.msu.ru

Country: Netherlands

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MEDLINETA: Photosynth Res

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