Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-24T14:06:56.185Z Has data issue: false hasContentIssue false
  • English
  • Français

Bioassay Indicates a Metabolite of Hexazinone Affects Photosynthesis of Loblolly Pine (Pinus taeda)

Published online by Cambridge University Press:  12 June 2017

Shi-Jean Susana Sung ,
David B. South  and
Dean H. Gjerstad
Shi-Jean Susana Sung
Affiliation:
Weed Sci. Res. Lab., USDA-ARS, Frederick, MD 21701
David B. South
Affiliation:
School of Forestry, Auburn Univ., AL 36849
Dean H. Gjerstad
Affiliation:
School of Forestry, Auburn Univ., AL 36849
Get access Rights & Permissions [Opens in a new window]

Abstract

The effects of hexazinone [3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4 (1H, 3H)-dione] and its metabolites, A [3-(4-hydroxycyclohexyl)-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4 (1H,3H)-dione], B [3-cyclohexyl-6-(methylamino)-1-methyl-1,3,5-triazine-2,4 (1H,3H)-dione], C [3-(4-hydroxycyclohexyl)-6-(methylamino)-1-methyl-1,3,5-triazine-2,4 (1H,3H)-dione], D [3-cyclohexyl-1-methyl-1,3,5-triazine-2,4,6 (1H, 3H,5H)-trione], and E [3-(4-hydroxycy clohexyl)-1-methyl-1,3,5-triazine-2,4,6 (1H,3H,5H)-trione], on photosynthesis of loblolly pine primary needle segments were studied using a bioassay technique. Hexazinone, at concentrations equal to or greater than 1.0 × 10-6 M, inhibited photosynthesis, while 1.0 × 10-8 M and 1.0 × 10-7 M concentrations increased photosynthesis. Metabolite B at 1.0 × 10-4 M also inhibited photosynthesis. Metabolites A, C, D, and E did not affect photosynthesis at 1.0 × 10-4 in pine needle segments. The bioassay proved simple and useful for determining effects of certain herbicides and metabolites on photosynthesis.

Keywords

Herbicidal actionphytotoxicityneedle stage of pine
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 33 , Issue 4 , July 1985 , pp. 440 - 442
Copyright
Copyright © 1985 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. Evans, T. M. and Andrews, A. W. 1976. Performance of “Velpar” in trials on southern railroads. Proc. South. Weed Sci. Soc. 29: 317–321.Google Scholar
2. Fitzgerald, C. H. and Fortson, J. C. 1979. Herbaceous weed control results in pine seedlings. Weed Sci. 27:583–588.CrossRefGoogle Scholar
3. Hamilton, R. A. 1979. A chemical method to reduce hardwood competition on pine sites. Proc. South. Weed Sci. Soc. 32:207–211.Google Scholar
4. Hensley, J. R. 1981. A method for identification of triazine resistant and susceptible biotypes of several weeds. Weed Sci. 29:70–73.Google Scholar
5. Hernandez, T. Z., Hudson, W. H., and Evans, T. M. 1975. “Velpar”, a new non-selective herbicide from DuPont. Proc. South. Weed Sci. Soc. 28:247–250.Google Scholar
6. McNeil, W. K., Stritzke, J. F., and Blasler, E. 1980. Absorption and translocation of hexazinone and tebuthiuron in winged elm. Proc. South. Weed Sci. Soc. 33:104 (Abstr.).Google Scholar
7. Nelson, L. R., Walstad, J. D., Dudley, C. S., and Breland, J. H. 1977. Preemergence herbicide treatments for loblolly pine plantations. Proc. South. Weed Sci. Soc. 30:261–268.Google Scholar
8. Nickles, J. K. and Stritzke, J. F. 1978. Pine release with DPX-3647. Proc. South. Weed Sci. Soc. 31:210 (Abstr.).Google Scholar
9. Peterson, C. A. 1977. The metabolic pathways and physiological effects of atrazine in Douglas-fir seedlings. Ph.D. Thesis, Oregon State Univ. 74 pp.Google Scholar
10. Rhodes, R. C. 1980. Soil studies with 14C-labeled hexazinone. J. Agric. Food Chem. 28:311–315.Google Scholar
11. Rhodes, R. C. 1980. Studies with 14C-labeled hexazinone in water and bluegill sunfish. J. Agric. Food Chem. 28:306–310.Google Scholar
12. Rhodes, R. C. and Jewell, R. A. 1980. Metabolism of 14C-labeled hexazinone in the rat. J. Agric. Food Chem. 28:303–306.CrossRefGoogle ScholarPubMed
13. South, D. B. and Sung, S. S. 1980. A new method for screening herbicides used for pine nurseries. Can. J. For. Res. 10:164–168.Google Scholar
14. Timmis, R. 1976. Methods of screening tree seedlings for frost hardiness. Pages 421–435 in Cannell, M. G. R. and Last, F. T., eds. Tree Physiology and Yield Improvement. Academic Press, New York.Google Scholar
15. Truelove, B., Davis, D. E., and Jones, L. R. 1974. A new method for detecting photosynthesis inhibitors. Weed Sci. 22:15–17.Google Scholar
16. Weed Science Society of America. 1983. Herbicide Handbook. 5th ed. Weed Sci. Soc. Am., Champaign, IL.Google Scholar