This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (40) Citing Articles via Google Scholar Google Scholar Articles by Magyarosy, A. C. Articles by Buchanan, B. B. Search for Related Content PubMed PubMed Citation Articles by Magyarosy, A. C. Articles by Buchanan, B. B. Agricola Articles by Magyarosy, A. C. Articles by Buchanan, B. B.

Articles

Effect of Powdery Mildew Infection on Photosynthesis by Leaves and Chloroplasts of Sugar Beets ¹

^a Department of Cell Physiology, University of California, Berkeley, California 94720

Chloroplasts isolated from powdery mildew-infected (Erysiphe polygoni DC) sugar beet leaves (Beta vulgaris L) showed a reduction in the rate of electron transport and in the accompanying ATP formation in noncyclic photophosphorylation (water as electron donor, NADP as electron acceptor) and little or no change in the rate of ATP formation in cyclic photophosphorylation catalyzed by phenazine methosulfate. The inhibition of noncyclic photophosphorylation appeared to lead in the parent leaves to a decreased rate of photosynthetic CO₂ assimilation and a shift in products resulting in a relative increase of amino acids. These changes were accompanied by alterations in chloroplast ultrastructure and by a reduction in the activity of enzymes necessary for the formation of organic acids (phosphoenolpyruvate carboxylase and malate dehydrogenase). These results are similar to the findings of Montalbini and Buchanan (1974 Physiol. Plant Pathol. 4: 191-196) with chloroplasts from rust-infected Vicia faba leaves.

¹ This investigation was supported in part by Hatch and California Statewide Critical Applied Research Funds.

This article has been cited by other articles:

				W. R. Nail and G. S. Howell Effects of Timing of Powdery Mildew Infection on Carbon Assimilation and Subsequent Seasonal Growth of Potted Chardonnay Grapevines Am. J. Enol. Vitic., September 1, 2005; 56(3): 220 - 227. [Abstract] [Full Text] [PDF]

				S.-W. Bang, D. S. Clark, and J. D. Keasling Engineering Hydrogen Sulfide Production and Cadmium Removal by Expression of the Thiosulfate Reductase Gene (phsABC) from Salmonella enterica Serovar Typhimurium in Escherichia coli Appl. Envir. Microbiol., September 1, 2000; 66(9): 3939 - 3944. [Abstract] [Full Text]