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Plant Physiology 47:510-515 (1971)
© 1971 American Society of Plant Biologists

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Articles

Fat Metabolism in Higher Plants

XLV. Some Factors Regulating Fatty Acid Synthesis by Isolated Spinach Chloroplasts 1

Curtis V. Givan2 and P. K. Stumpf

a Department of Biochemistry and Biophysics, University of California, Davis, California 95616

In the biosynthesis of fatty acids from 1-14C-acetate by intact spinach chloroplasts, ATP and Triton X-100 exert opposing effects on the conversion of palmitic acid to stearic acid; thus, ATP decreases the conversion and Triton X-100 increases the conversion. Changes in the availability of photosynthetically generated reduced nicotinamide adenine dinucleotide phosphate apparently does not markedly affect the C16-C18 ratio. Various H2O2-generating systems, such as viologen dyes, inhibit oleate synthesis from acetate and cause stearate to accumulate. Catalase partially reverses the effect of these days.

2 Present address: Department of Botany, University of Newcastle upon Tyne, Newcastle upon Tyne NE 1 7RU, England.

1 Supported by National Institutes of Health Postdoctoral Fellowship GM 13319 to Curtis V. Givan and National Science Foundation Grant NSF GB-19733X to P. K. Stumpf.






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Copyright © 1971 by the American Society of Plant Biologists