Hostname: page-component-848d4c4894-89wxm Total loading time: 0 Render date: 2024-07-05T18:19:21.707Z Has data issue: false hasContentIssue false
  • English
  • Français

Basis of Differential Tolerance of Two Corn Hybrids (Zea mays) to Metolachlor

Published online by Cambridge University Press:  12 June 2017

Charles K. Cottingham  and
Kriton K. Hatzios
Charles K. Cottingham
Affiliation:
Dep. Plant Pathol. Physiol, and Weed Sci., Virginia Polytechnic Inst. and State Univ., Blacksburg, VA 24061-0330
Kriton K. Hatzios
Affiliation:
Dep. Plant Pathol. Physiol, and Weed Sci., Virginia Polytechnic Inst. and State Univ., Blacksburg, VA 24061-0330
Get access Rights & Permissions [Opens in a new window]

Abstract

Greenhouse and laboratory studies were conducted to determine the basis of differential response of two corn hybrids to the chloroacetanilide herbicide metolachlor. In greenhouse experiments, metolachlor at 6.7 kg ha−1 reduced the height of the susceptible ‘Northrup-King 9283’ corn by 53% relative to untreated controls and caused extensive visible injury 14 d after treatment Under the same conditions, the height of metolachlor-treated ‘Cargill 7567’ corn seedlings was reduced by only 18% without any visible herbicide injury. The 14C-metolachlor was more rapidly absorbed by the emerging shoot of the metolachlor-susceptible hybrid, Northrup-King 9283. Thus, differential metolachlor tolerance may be due in part to processes at the level of herbicide uptake. Metabolism experiments revealed that both hybrids were able to conjugate 14C-metolachlor with glutathione at similar rates. However, glutathione S-transferase activity increased earlier during seedling development and reached higher activities in the metolachlor-tolerant hybrid, Cargill 7567.

Keywords

Metolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl) acetamideZea mays L. ‘Cargill 7567’ and ‘Northrup-King 9283’Glutathione conjugationglutathione S-transferasemetolachlor uptakemetabolism
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 40 , Issue 3 , September 1992 , pp. 359 - 363
Copyright
Copyright © 1992 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. Bradford, M. M. 1976. A rapid and sensitive method for the determination of microgram quantities of protein utilizing the principle of protein dye binding. Anal. Biochem. 72:248–254.Google Scholar
2. Breaux, E. J. 1987. Initial metabolism of acetochlor in tolerant and susceptible seedlings. Weed Sci. 35:463–467.Google Scholar
3. Chandler, J. E., Basler, E., and Santelmann, P. W. 1974. Uptake and translocation of alachlor in soybean and wheat. Weed Sci. 22:253–258.CrossRefGoogle Scholar
4. Cottingham, C. K., Hatzios, K. K., and Meredith, S. A. 1992. Comparative responses of selected corn (Zea mays) hybrids to EPTC and metolachlor. Weed Res. (accepted).Google Scholar
5. Dean, J. V., Gronwald, J. W., and Eberlein, C. V. 1990. Induction of glutathione S-transferase isozymes in sorghum by herbicide antidotes. Plant Physiol. 92:467–473.Google Scholar
6. Dixon, G. A. and Stoller, E. W. 1982. Differential toxicity, absorption, translocation, and metabolism of metolachlor in corn (Zea mays) and yellow nutsedge (Cyperus esculentus). Weed Sci. 30:225–230.CrossRefGoogle Scholar
7. Fuerst, E. P. 1987. Understanding the mode of action of the chloroacetanilide and thiocarbamate herbicides. Weed Technol. 1:270–277.CrossRefGoogle Scholar
8. Francis, T. R. and Hamill, A. S. 1980. Inheritance of maize seedling tolerance to alachlor. Can. J. Plant Sci. 60:1045–1047.Google Scholar
9. Hatzios, K. K. and Penner, D. 1982. Metabolism of Herbicides in Higher Plants. Burgess Publishing Co., Minneapolis, MN. 142 pp.Google Scholar
10. Mozer, T. J., Tiemeier, D. C., and Jaworski, E. G. 1983. Purification and characterization of corn glutathione-S-transferase. Biochemistry 22:1068–1072.Google Scholar
11. O'Connell, K. M., Breaux, E. J., and Fraley, R. T. 1988. Different rate of metabolism of two chloroacetanilide herbicides in Pioneer 3320 corn. Plant Physiol. 86:359–363.Google Scholar
12. Rowe, L. and Penner, D. 1990. Factors affecting chloroacetanilide injury to com (Zea mays L.). Weed Technol. 4:904–906.Google Scholar
13. Rowe, L., Kells, J. J., and Penner, D. 1991. Efficacy and mode of action of CGA-154281, a protectant for corn (Zea mays) from metolachlor injury. Weed Sci. 39:78–82.Google Scholar
14. Yenne, S. P., Hatzios, K. K., and Meredith, S. A. 1990. Uptake, translocation, and metabolism of oxabetrinil and CGA-133205 in grain sorghum (Sorghum bicolor) and their influence on metolachlor metabolism. J. Agric. Food Chem. 38:1957–1961.CrossRefGoogle Scholar