Photosynthetica 2001, 39(3):419-425 | DOI: 10.1023/A:1015190629409

Multi-Phasic Kinetics of P700+ Dark Re-Reduction in Nicotiana Tabacum

Ming-Xian Jin1, Zheng-Ju Yao1, Hualing Mi1
1 Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China

Reduction kinetics of P700+ after far-red radiation (FR)-induced oxidation in intact tobacco leaves was examined by analysing the post-irradiation relaxation of 810-830 nm absorbance difference. The reduction curve could be de-convoluted distinctively into two or three exponential decaying components, depending on the FR irradiance, the treating and measuring temperatures, and the extent of dark adaptation. The multi-phasic kinetics of P700+ re-reduction upon the turning off of FR irradiation is related to the heterogeneity of electron transport around photosystem 1 in thylakoid membranes.

Additional key words: far-red radiation; photosystem 1; tobacco

Published: September 1, 2001  Show citation

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Jin, M., Yao, Z., & Mi, H. (2001). Multi-Phasic Kinetics of P700+ Dark Re-Reduction in Nicotiana Tabacum. Photosynthetica, 39(3), 419-425. doi: 10.1023/A:1015190629409
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