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A comparison based on delayed light emission and fluorescence induction of intact chloroplasts isolated from mesophyll protoplasts and bundle-sheath cells of maize



A comparison based on delayed light emission and fluorescence induction of intact chloroplasts isolated from mesophyll protoplasts and bundle-sheath cells of maize



Biochemical Journal 180(1): 253-256



Chloroplasts or cells from maize (Zea mays) bundle sheath show a very low intensity of delayed light emission compared with mesophyll protoplasts or chloroplasts. the bundle-sheath chloroplasts retain only the fast (less than 1 ms) component of the emission. They also fail to show fluorescence induction in contrast to the mesophyll, which behaved normally. The mesophyll material was made to resemble the bundle-sheath chloroplasts in respect to both phenomena by adding to it 1-(3',4'-dichlorophenyl)-3,3-dimethylurea and hydroxylamine. Apparently, photosystem II, that gives rise to both effects, is not active in the bundle-sheath but may be present in an inhibited form.

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Accession: 000581841

Download citation: RISBibTeXText

PMID: 486104

DOI: 10.1042/bj1800253


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