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The Effect of Certain Triazines on C14O2 Fixation in Red Kidney Beans

Published online by Cambridge University Press:  12 June 2017

Floyd M. Ashton ,
Gunter Zweig  and
George W. Mason
Floyd M. Ashton
Affiliation:
University of California, Davis
Gunter Zweig
Affiliation:
University of California, Davis
George W. Mason
Affiliation:
University of California, Davis
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Extract

Several triazines exhibit high phytotoxicity towards many species of higher plants and are being extensively studied as possible herbicides. Moreland et al. and Exer reported that 2-chloro-4,6-bis(ethylamino)-s-triazine, simazine, inhibited the photochemical activity of isolated chloroplasts. Exer also presented evidence that the inhibited reaction involved the photochemical reduction of DPN, diphosphopyridine-nucleotide. Gast has shown that in Coleus Blunei Benth. simazine blocked starch production in the light and that this effect was overcome by the addition of sucrose to starch-free leaves in the dark. These results indicated interference of photosynthetic CO2 fixation by simazine. Roth reported that simazine inhibited photosynthesis in Elodea but had a stimulating effect on respiration. In light of these findings a study of the effect of simazine and certain related triazines on the photosynthetic CO2 fixation of red kidney bean was undertaken.

Type
Research Article
Information
Weeds , Volume 8 , Issue 3 , July 1960 , pp. 448 - 451
Copyright
Copyright © 1960 Weed Science Society of America 

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References

Literature Cited

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