Email this article Fluorescence induction changes in bean leaves after heat treatment
- Authors: Levykina I.P.1, Karavaev V.A.1
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Affiliations:
- Department of Physics
- Issue: Vol 71, No 1 (2016)
- Pages: 128-134
- Section: Biophysics and Medical Physics
- URL: https://journals.rcsi.science/0027-1349/article/view/164432
- DOI: https://doi.org/10.3103/S0027134916010124
- ID: 164432
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Abstract
The regularities in the alterations of chlorophyll a fluorescence induction curves of bean leaves after short (15 min) heating in the range of temperatures from 24 to 45°C were determined. A dramatic decrease in the relative f luorescence quenching (FP–FT)/FT, as well as the Fv/Fm ratio, were observed after heating at temperatures above 38°C, which indicates a decrease in the photochemical activity of photosystem II. The effect of an increase in the resistance of the photosynthetic apparatus to the temperature of 43°C after preheating at 37°C was demonstrated.
About the authors
I. P. Levykina
Department of Physics
Author for correspondence.
Email: levykina@physics.msu.ru
Russian Federation, Moscow, 119992
V. A. Karavaev
Department of Physics
Email: levykina@physics.msu.ru
Russian Federation, Moscow, 119992
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