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

R. P. Gregory, M. Droppa, G. Horváth, E. H. Evans

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Abstract

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 could be made to resemble the bundle-sheath chloroplasts in respect of both phenomena by adding to it 1-(3',4'-dichlorophenyl)-3,3-dimethyl-urea and hydroxylamine, together. It is concluded that Photosystem II, that gives rise to both effects, is not active in the bundle sheath but may be present in an inhibited form.

Original languageEnglish
Pages (from-to)253-256
Number of pages4
JournalBiochemical Journal
Volume180
Issue number1
Publication statusPublished - Apr 15 1979

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Hydroxylamine
Photosystem II Protein Complex
Protoplasts
Light emission
Chloroplasts
Zea mays
Urea
Fluorescence
Light

ASJC Scopus subject areas

  • Biochemistry

Cite this

A comparison based on delayed light emission and fluorescence induction of intact chloroplasts isolated from mesophyll protoplasts and bundle-sheath cells of maize. / Gregory, R. P.; Droppa, M.; Horváth, G.; Evans, E. H.

In: Biochemical Journal, Vol. 180, No. 1, 15.04.1979, p. 253-256.

Research output: Contribution to journalArticle

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