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. 1979 Nov;64(5):690–694. doi: 10.1104/pp.64.5.690

Effect of Nuclear Mutation in Maize on Photosynthetic Activity and Content of Chlorophyll-Protein Complexes 1

C Donald Miles a, John P Markwell a,2, J Philip Thornber a,2
PMCID: PMC543331  PMID: 16661036

Abstract

A number of new nuclear mutants have been isolated from maize by selection for high chlorophyll (Chl) fluorescence. These mutants show reduced rates of photosynthesis and/or are deficient in Chl. Electrophoretic examination of wild type thylakoid membranes revealed five Chl-protein complexes, two containing only Chl a and three containing Chl a and Chl b. A class of nonviable, photosystem I-deficient mutants was found to be lacking one (A-1) of the two Chl a-protein complexes. A second class of nonviable, photosystem I-lacking mutants was found to be missing not only this A-1 complex but also one or more of the three Chl a and b-containing, light-harvesting Chl-protein complexes. Viable mutants were obtained which appeared to have lost just one of the Chl b-containing complexes, whereas a second class of viable mutants was missing all three of the Chl b-complexes. The results confirm that the A-1 band is associated with the P700-Chl a-protein complex characterized previously. The data also indicate the existence of structurally different forms of the light-harvesting Chl a- and b-containing complexes. The results also show a lower molecular weight band (A-2) containing primarily Chl a and which appears to be required for viability.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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