Hostname: page-component-7479d7b7d-c9gpj Total loading time: 0 Render date: 2024-07-11T08:21:25.793Z Has data issue: false hasContentIssue false
  • English
  • Français

Norflurazon Absorption by Excised Velvetleaf (Abutilon theophrasti) Roots

Published online by Cambridge University Press:  12 June 2017

Wondimagegnehu Mersie  and
Megh Singh
Wondimagegnehu Mersie
Affiliation:
Citrus Res. and Educ. Ctr., Univ. Florida, IFAS, 700 Experiment Station Road, Lake Alfred, FL 33850
Megh Singh
Affiliation:
Citrus Res. and Educ. Ctr., Univ. Florida, IFAS, 700 Experiment Station Road, Lake Alfred, FL 33850
Get access Rights & Permissions [Opens in a new window]

Abstract

The absorption of norflurazon [4-chloro-5-(methylamino)-2-(3-(trifluromethyl)phenyl)-3(2H)-pyridazinone] by 1-cm segments cut from the apical 5-cm roots of velvetleaf (Abutilon theophrasti Medik. # ABUTH) was studied. Norflurazon absorption was rapid in the first 10 min but there was very little increase thereafter up to 120 min. Norflurazon also penetrated the entire tissue volume within 30 min after the root segments were placed in absorption solution. Norflurazon did not accumulate to concentrations above the external solution over 120 min, and 90% of the absorbed herbicide diffused freely out of the tissue within 10 min. The metabolic inhibitor KCN did not affect norflurazon uptake, whereas pretreatment of root tissue with DNP increased absorption. Anoxia increased absorption by 60 and 120% above aerated treatment at 10 min and 2 h, respectively. These experiments suggest that norflurazon, which is considered to move primarily in the apoplast, moved into both the apoplast and symplast of velvetleaf root cells by simple diffusion.

Keywords

Herbicide absorptionherbicide effluxmetabolic inhibitorsanoxiaABUTH
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 35 , Issue 3 , May 1987 , pp. 303 - 307
Copyright
Copyright © 1987 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. Balke, N. E. and Hodges, T. K. 1979. Effect of diethylstilbestrol on ion fluxes in oat roots. Plant Physiol. 63:42–47.Google Scholar
2. Bartels, P. G. and Watson, C. W. 1978. Inhibition of carotenoid synthesis by fluridone and norflurazon. Weed Sci. 26:198–203.Google Scholar
3. Bukovac, M. J. 1976. Herbicide entry into plants. Pages 335–364 in Audus, L. J., ed. Herbicides: Physiology, Biochemistry, Ecology. 2nd ed. Vol. 1. Academic Press, New York.Google Scholar
4. Crafts, A. S. 1964. Herbicide behavior in the plant. Pages 75–110 in Audus, L. J., ed. Herbicides: Physiology, Biochemistry, Ecology, 2nd ed. Vol. 1. Academic Press, New York.Google Scholar
5. Frank, R. and Switzer, C. M. 1969. Absorption and translocation of pyrazon by plants. Weed Sci. 17:365–370.Google Scholar
6. Hodges, T. K. 1973. Ion adsorption by plant roots. Adv. Agron. 25:163–207.Google Scholar
7. Luttge, U. and Higinbotham, N. 1979. Transports in plants. Springer-Verlag, New York. 468 pp.Google Scholar
8. Moody, K., Kust, C. A., and Buchholtz, K. P. 1970. Uptake of herbicides by soybean roots in culture solutions. Weed Sci. 18:642–647.Google Scholar
9. Motooka, P. S., Corbin, F. T., and Worsham, A. D. 1977. Uptake and translocation of Sandoz 6706 in soybean and sicklepod. Weed Sci. 25:30–35.Google Scholar
10. Orwick, P. L., Schreiber, M. M., and Hodges, T. K. 1976. Absorption and efflux of chloro-s-triazines by Setaria roots. Weed Res. 16:139–144.Google Scholar
11. Peterson, C. A. and Edgington, L. V. 1976. Entry of pesticides into the symplast as measured by their loss from an ambient solution. Pestic. Sci. 7:483–491.Google Scholar
12. Price, T. P. and Balke, N. E. 1982. Characterization of rapid atrazine accumulation by excised velvetleaf (Abutilon theophrasti) roots. Weed Sci. 30:633–639.Google Scholar
13. Price, T. P. and Balke, N. E. 1983. Characterization of atrazine accumulation by excised velvetleaf (Abutilon theophrasti) roots. Weed Sci. 31:14–19.Google Scholar
14. Price, T. P. and Balke, N. E. 1983. Comparison of atrazine absorption by underground tissues of several plant species. Weed Sci. 31:481–487.Google Scholar
15. Sandmann, G., Bramley, P. M., and Boger, P. 1980. The inhibitory mode of action of pyridazinone herbicide norflurazon on a cell-free carotenogenic enzyme system. Pestic. Biochem. Physiol. 14:185–191.Google Scholar
16. Shone, M.G.T. and Wood, A. V. 1972. Factors affecting absorption and translocation of simazine by barley. J. Exp. Bot. 23:141–151.Google Scholar
17. Shone, M.G.T., Bartlett, B. O., and Wood, A. V. 1974. A comparison of the uptake and translocation of some organic herbicides and systemic fungicide by barley. II. Relationship between uptake by roots and translocation to shoots. J. Exp. Bot. 25:401–409.Google Scholar
18. Stephenson, G. R. and Ries, S. K. 1967. The movement and metabolism of pyrazon in tolerant and susceptible species. Weed Res. 7:51–60.Google Scholar
19. Strang, R. H. and Rogers, R. L. 1974. Behavior and fate of two phenylpyridazone herbicides in cotton, corn, and soybean. J. Agric. Food Chem. 22:1119–1125.Google Scholar
20. Weed Science Society of America. 1983. Herbicide Handbook. 5th ed. Weed Sci. Soc. Am., Champaign, Illinois.Google Scholar