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1 September 2000 Nonphotosynthetic Reduction of the Intersystem Electron Transport Chain of Chloroplasts Following Heat Stress. Steady-state Rate
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Abstract

The consequence of elevated temperatures in the range of 39–51°C on the steady-state rate of light-induced electron transport through photosystem I (PSI) supported by stromal reductants was studied in intact barley leaves using photoacoustic and chlorophyll fluorescence techniques. Measurable electron flow through PSI in diuron-treated leaves occurred only after exposure to temperatures above 37°C. The steady-state rate of the above diuron-insensitive electron flow with methyl viologen as electron acceptor was estimated to be 3.7 μeq m−2 s−1 or 0.018 μeq μmol chlorophyll−1 s−1 in leaves exposed for 5 min to 45°C.

Nikolai G. Bukhov, Guy Samson, and Robert Carpentier "Nonphotosynthetic Reduction of the Intersystem Electron Transport Chain of Chloroplasts Following Heat Stress. Steady-state Rate," Photochemistry and Photobiology 72(3), 351-357, (1 September 2000). https://doi.org/10.1562/0031-8655(2000)072<0351:NROTIE>2.0.CO;2
Received: 21 January 2000; Accepted: 1 June 2000; Published: 1 September 2000
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