熱発光による光合成電子伝達系の研究
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概要
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Thermoluminescence is a burst of light emission by warming the leaf or chloroplasts which were illuminated by light. It results from the charge recombination between positively and negatively charged pairs created by photochemical reaction. The origin of four out of seven thermoluminescence bands was assigned: the A, Q, B1 and B2 bands arise from S<SUB>3</SUB>Q<SUB>A</SUB><SUP>-</SUP>, S<SUB>2</SUB>Q<SUB>A</SUB><SUP>-</SUP>, S<SUB>3</SUB>Q<SUB>B</SUB><SUP>-</SUP>·and S<SUB>2</SUB>Q<SUB>B</SUB><SUP>-</SUP> charge pairs, respectively. Thermoluminescence is applied to the analysis of oxidinzing and reducing side of photosystem II. The following facts were elucidated; 1) By removal of 33 kDa extrinsic protein, S<SUB>3</SUB> to S<SUB>4</SUB> transition is inhibited. 2) By Cl<SUP>-</SUP>·depletion, abnomal S<SUB>2</SUB> state is formed. 3) Replacement of Q<SUB>B</SUB>-quinone with quinone derivatives yields a modified thermoluminescence band. 4) Thermoluminescence is a powerful tool for the study of herbicides and the resistant mutants.
- 日本生物物理学会の論文
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