CHLOROPHYLL A FLUORESCENCE AS A QUANTITATIVE PROBE OF PHOTOSYNTHESIS: EFFECTS OF CO2 CONCENTRATION DURING GAS TRANSIENTS ON CHLOROPHYLL FLUORESCENCE IN SPINACH LEAVES
نویسندگان
چکیده
منابع مشابه
Chlorophyll fluorescence: a probe of photosynthesis in vivo.
The use of chlorophyll fluorescence to monitor photosynthetic performance in algae and plants is now widespread. This review examines how fluorescence parameters can be used to evaluate changes in photosystem II (PSII) photochemistry, linear electron flux, and CO(2) assimilation in vivo, and outlines the theoretical bases for the use of specific fluorescence parameters. Although fluorescence pa...
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Recent studies on oxygen evolution of corn chloroplast fragments in flashing light [Stemler, A., Babcock, G.T. and Govindjee (1974) Proc. Natl. Acad. Sci. 71, 4679-4683] have shown that the absence of bicarbonate ions increases the turnover time of the Photosystem II reaction center. The rate limiting steps in Photosystem II turnover can be interpreted in terms of reactions either on the oxidi...
متن کاملEvaluation of chlorophyll fluorescence as a probe for drought stress in willow leaves.
The effect of drought on the photosynthetic apparatus of leaves of Salix sp. was studied by measurements of the induction of chlorophyll fluorescence and the capacity for O(2) evolution. Using a multivariate analysis, a model was developed that could predict the degree of drought stress from the data of fluorescence kinetics. Even mild drought stress was detected with high precision; this was n...
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The intensity of chlorophyll a fluorescence during the early part of fluorescence induction at 0, initial fluorescence, and P, peak fluorescence, was higher during the day phase of the circadian cycle than during the night phase in continuous light (LL) conditions and was positively correlated with the rate of oxygen evolution. The circadian rhythm in fluorescence in LL persisted in the presenc...
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Absorption, fluorescence spectra of chlorophyll a (Chl-a) and all-trans-β-carotene (β-Car) mixing solution are investigated in different polarity and polarizability solvents. The carotenoids regulate the energy flow in photosynthesis by interaction with chlorophyll, leading to an observable reduction of Chl-a fluorescence. The fluorescence red shifts with the increasing solvent polarizability. ...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1986
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1986.tb00645.x