Biochemistry and Physiology of Herbicide Action - download pdf or read online

By Carl Fedtke

ISBN-10: 3642683754

ISBN-13: 9783642683756

ISBN-10: 3642683770

ISBN-13: 9783642683770

Herbicides are a part of smooth agricultural creation structures and accordingly give a contribution considerably to the financial system of agricultural items. whilst, herbicides are powerful and particular inhibitors of plant metabolism and will consequently be used as invaluable instruments in easy plant physiological learn. a well known instance is the photosynthesis-inhibiting herbicide diuron, identified to plant physiologists as DCMU, which has develop into one of many necessities in sleek photosynthesis learn. equally, wisdom in different parts of plant metabolism might be complex by means of herbicides as particular inhibitors. This booklet describes the results of herbicides at the metabolism of upper vegetation from the perspective of the plant physiologist. the cloth of this e-book is for this reason, so far as attainable, divided into parts of metabolism. This ebook intends (1) to give the reader with present wisdom and perspectives within the zone of herbicide modes of motion and (2) to advertise the long run use of herbicides as metabolic inhibitors in plant physiological learn to the benefit of either, the pesticide and the plant sciences. I desire to convey my due to my colleagues and associates Prof. N. Amrhein, Prof. E. Elstner, Dr. L. Eue, Dr. J. Konze, Dr. okay. Liirssen, Dr. W.Oettmeier, Dr. H. Quader, Dr. R. R. Schmidt, Dr. R. H. Shimabukuro, Dr. J. Stetter, Prof.

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6 ~M monuron in all the cell types tested. It is at present not clear whether the mechanism of CO 2 -fIXation (C-3 vs. C-4 pathway) can provide a basis for selective herbicidal activity (cf. 35 and 66). 0 mM concentration range has been observed with Saccharomyces cerevisiae [68]. The site of inhibition was localized between cytochromes band c and was apparently the same as for diuron. The decreasing effect of neburon [40,92], diuron, jenuron, and monuron on the carbohydrates of marine algae has been studied [71,93].

However, while the typical carbamates are germination inhibitors, swep behaves more like an inhibitor of photosynthesis. Comparing the effect of 13 herbicides on lipid metabolism in Chlorella, Sumida and Veda [112] found that swep, like other inhibitors of photosystem II, severely inhibited the biosynthesis of complex lipids from V _14 C_ acetate. Thiolcarbamates and 2,4-D did not reveal an inhibitory effect. d. s-Triazine Herbicides s-Triazine herbicides (Table 6) represent one of the economically most important groups of herbicides.

An influence of prometryne on mitochondria was also revealed by earlier studies where the effects on photosynthesis and nucleic acid synthesis in spinach leaves where compared kinetically [139]. The same conclusion 39 III. Inhibition of Photosynthetic Electron Flow Table 7. Influence of s-triazine herbicides on the activities of isolated chloroplasts and mitochondria. 1 mM, photophosphorylation with 1 ~ herbicide [114]. Least significant differences between 5 and 10%. 9 could be drawn for ioxynil, a well-known respiratory uncoupler and photosynthesis inhibitor which was included in the experiments.

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Biochemistry and Physiology of Herbicide Action by Carl Fedtke

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