Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-22T19:42:39.007Z Has data issue: false hasContentIssue false

Inhibition of Photosystem II and Chlorella Growth by 1-(m-t-butylacetamidophenyl)-3-methyl-3-methoxy urea

Published online by Cambridge University Press:  12 June 2017

Celestia M. Howe
Affiliation:
Dep. Plant Pathol. & Physiol., Virginia Polytechnic Inst. & State Univ., Blacksburg, VA 24061

Abstract

The experimental herbicide R-24191 [1-(m-t-butylacetamidophenyl)-3-methyl-3-methoxy urea] inhibited growth of Chlorella sorokiniana Shihira and Kraus, O2 evolution during CO2 fixation by Chlorella and isolated leaf cells of spinach (Spinacia oleracea L. ‘Winter Bloomsdale 769′), the photoreduction of NADP by isolated chloroplasts using water or hydroxylamine as the electron donor, the photoreduction of 2,6-dichloroindophenol by isolated chloroplasts, and O2 uptake by isolated chloroplasts using paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) as the electron acceptor. The phenylurea herbicide had no effect on the last reaction when ascorbate plus 2,6-dichloroindophenol were used as the electron donor. The results indicate that the site of the phenylurea inhibition was in photosystem II between water-splitting and photosystem I.

Type
Research Article
Copyright
Copyright © 1979 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Arnon, D. I. 1949. Copper enzymes in isolated chloroplasts. Polyphenol oxidase in Beta vulgaris . Plant Physiol. 24:115.CrossRefGoogle Scholar
2. Ashton, F. M., De Villiers, O. T., Glenn, R. K., and Duke, W. B. 1977. Localization of metabolic sites of action of herbicides. Pestic. Biochem. Physiol. 7:122141.CrossRefGoogle Scholar
3. Cedeno-Maldonado, A. and Swader, J. A. 1974. Studies on the mechanism of copper toxicity in Chlorella . Weed Sci. 22:443449.CrossRefGoogle Scholar
4. Cedeno-Maldonado, A., Swader, J. A., and Heath, R. L. 1972. The cupric ion as an inhibitor of photosynthetic electron transport in isolated chloroplasts. Plant Physiol. 50:698701.CrossRefGoogle ScholarPubMed
5. De Mur, A. R., Swader, J. A., and Youngner, V. B. 1972. Siduron inhibition of photosystem II in isolated chloroplasts. Pestic. Biochem. Physiol. 2:337341.CrossRefGoogle Scholar
6. Izawa, S., Connolly, T. N., Winget, G. D., and Good, N. E. 1966. Inhibition and uncoupling of photophosphorylation in chloroplasts. Pages 169187 in Energy Conservation by the Photosynthetic Apparatus. Brookhaven Symposia in Biology 19. Brookhaven National Laboratory, Upton, New York.Google Scholar
7. Izawa, S. and Good, N. E. 1965. The number of sites sensitive to 3-(3,4-dichlorophenyl)-1,1-dimethylurea, 3-(4-chlorophenyl)-1,1-dimethylurea and 2-chloro-4-(2-propylamino)-6-ethylamino-s-triazine in isolated chloroplasts. Biochim. Biophys. Acta 102:2038.CrossRefGoogle Scholar
8. Izawa, S., Heath, R. L., and Hind, G. 1969. The role of chloride in photosynthesis III. The effect of artificial electron donors upon electron transport. Biochim. Biophys. Acta 180:388398.CrossRefGoogle Scholar
9. Katoh, S. and San Pietro, A. 1967. Ascorbate-supported NADP photoreduction by heated Euglena chloroplasts. Arch. Biochem. Biophys. 122:144152.CrossRefGoogle ScholarPubMed
10. Mehler, A. H. 1951. Studies on reactions of illuminated chloroplasts I. Mechanism of the reduction of oxygen and other Hill reagents. Arch. Biochem. Biophys. 33:6577.CrossRefGoogle ScholarPubMed
11. Mehler, A. H. 1951. Studies on reactions of illuminated chloroplasts II. Stimulation and inhibition of the reaction with molecular oxygen. Arch. Biochem. Biophys. 34:339351.CrossRefGoogle ScholarPubMed
12. Moreland, D. E. 1967. Mechanism of action of herbicides. Annu. Rev. Plant Physiol. 18:365386.CrossRefGoogle Scholar
13. Porter, E. M. and Bartels, P. G. 1977. Use of single leaf cells to study mode of action of SAN 6706 on soybean and cotton. Weed Sci. 25:6065.CrossRefGoogle Scholar
14. Swader, J. A. 1978. Diquat enhancement of cupric ion toxicity. Pestic. Biochem. Physiol. (In press).CrossRefGoogle Scholar
15. Swader, J. A. and Chan, W. Y. 1975. Citric acid enhancement of copper solubility and toxicity in bicarbonate solutions. Pestic. Biochem. Physiol. 5:405411.CrossRefGoogle Scholar
16. Swader, J. A. and Jacobson, B. S. 1972. Acetazolamide inhibition of photosystem II in isolated spinach chloroplasts. Phytochemistry 11:6570.CrossRefGoogle Scholar