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Pitted and Hybrid Morningglory Accessions Have Variable Tolerance to Glyphosate

  • Ian C. Burke (a1), Krishna N. Reddy (a2) and Charles T. Bryson (a2)

Abstract

Two greenhouse studies were conducted to investigate the variability in tolerance to a sublethal dose of glyphosate among accessions of pitted morningglory, hybrid morningglory (a fertile hybrid between pitted and sharppod morningglory), and sharppod morningglory, collected from several states in the southern United States. The first study was conducted to evaluate the variability in tolerance to glyphosate among accessions. Glyphosate at 420 g ae/ha was applied to plants at the four- to five-leaf stage, and control (percent shoot fresh weight reduction) was determined 2 wk after treatment (WAT). Pitted morningglory response ranged from −9% (indicating no response to glyphosate) to 39% control. A similar trend was observed in hybrid morningglory. Control of two related species, cypressvine morningglory and red morningglory, averaged 40 and 29%, respectively, and was similar to control of the most susceptible pitted morningglory and hybrid morningglory accessions. Ivyleaf morningglory control was 9%. Sharppod morningglory control was highest (48%) among the morningglories studied. A second study was conducted to determine levels of tolerance to glyphosate based on GR50 (dose required to cause a 50% reduction in plant growth) in 10 accessions that were least to most sensitive to glyphosate (7 pitted, 2 hybrid, and 1 sharppod morningglory). Glyphosate GR50 doses ranged from 0.65 to 1.23 kg/ha, a two-fold variability in tolerance to glyphosate among the 7 pitted morningglory accessions. Increasing levels of tolerance were associated with the absence of a leaf notch. These results indicate the existence of variable tolerance to a sublethal dose of glyphosate among accessions of pitted morningglory.

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Corresponding author

Corresponding author's E-mail: icburke@wsu.edu.

References

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Anonymous, , 2007. Roundup WeatherMax label. Monsanto Co., St. Louis, MO.
Baucom, R. S. and Mauricio, R. 2004. Fitness costs and benefits of novel herbicide tolerance in a noxious weed. PNAS 101:1338613390.
Bryson, C. T., Reddy, K. N., and Burke, I. C. 2008. Morphological comparison of morningglory (Ipomoea and Jacquemontia spp.) populations from the southeastern United States. Weed Sci 56:692698.
Culpepper, A. S., Gimenez, A. E., York, A. C., Batts, R. B., and Wilcut, J. W. 2001. Morningglory (Ipomoea spp.) and large crabgrass (Digitaria sanguinalis) control with glyphosate and 2,4-DB mixtures in glyphosate-resistant soybean (Glycine max). Weed Technol 15:5661.
DeGennaro, F. P. and Weller, S. C. 1984. Differential susceptibility of field bindweed (Convolvulus arvensis) biotypes to glyphosate. Weed Sci 32:472476.
Draper, N. R. and Smith, H. 1981. Applied Regression Analysis. New York: J. Wiley. 3342, 511.
Ellis, M. and Kay, Q. O. N. 1975. Genetic variation in herbicide resistance in scentless mayweed [Tripleurospermum inodurm (L.) Schultz Bip.] I. Differences between populations in response to MCPA. Weed Res 15:317326.
Elmore, C. D. 1986. Mode of reproduction and inheritance of leaf shape in Ipomoea hederacea. Weed Sci 34:391395.
Ennos, R. A. 1981. Quantitative studies of the mating system in 2 sympatric species of Ipomoea (Convolvulaceae). Genetica 57:9398.
Herrmann, K. M. and Weaver, L. M. 1999. The shikimate pathway. Annu. Rev. Plant Physiol. Mol. Biol 50:473503.
Holliday, R. J. and Putwain, P. D. 1980. Evolution of herbicide resistance in Senecio vulgaris: variation in susceptibility to simazine between and within populations. J. Appl. Ecol 17:779791.
Jaworski, E. G. 1982. Mode of action of N-phosphonomethylglycine: inhibition of aromatic amino acid biosynthesis. J. Agric. Food Chem 20:11951198.
Koger, C. H., Poston, D. H., and Reddy, K. N. 2004. Effect of glyphosate spray coverage on control of pitted morningglory (Ipomoea lacunosa). Weed Technol 18:124130.
Koger, C. H. and Reddy, K. N. 2005. Glyphosate efficacy, absorption, and translocation in pitted morningglory (Ipomoea lacunosa). Weed Sci 53:277283.
Kohler, E. A., Throssell, C. S., and Reicher, Z. J. 2004. Ground ivy (Glechoma hederacea) populations respond differently to 2,4-D or triclopyr. Weed Technol 18:566574.
[NASS] National Agricultural Statistics Service, U.S. Department of Agriculture 2008. Agricultural Chemical Usage 2005 Field Crops Summary. http://usda.mannlib.cornell.edu/usda/current/AgriChemUsFC/AgriChemUsFC-05-21-2008.txt. Accessed: December 29, 2008.
Neve, P. and Powles, S. B. 2005. Recurrent selection with reduced herbicide rates results in the rapid evolution of herbicide resistance in Lolium rigidum . Theoretical and Applied Genetics 110:11541166.
Norsworthy, J. K., Burgos, N. R., and Oliver, L. R. 2001. Differences in weed tolerance to glyphosate involve different mechanisms. Weed Technol 15:725731.
Norsworthy, J. K. and Oliver, L. R. 2002. Pitted morningglory interference in drill-seeded glyphosate-resistant soybean. Weed Sci 50:2633.
Pline, W. A., Wilcut, J. W., Duke, S. O., Edmisten, K. L., and Wells, R. W. 2002. Tolerance and accumulation of shikimic acid in response to glyphosate applications in glyphosate-resistant and conventional cotton (Gossypium hirsutum L.). J. Agric. Food Chem 50:506512.
Powles, S. B. and Preston, C. 2006. Evolved glyphosate resistance in plants:biochemical and genetic basis of resistance. Weed Technol 20:282289.
Price, S. C., Hill, J. E., and Allard, R. W. 1983. Genetic variability for herbicide reaction in plant populations. Weed Sci 31:652657.
Reddy, K. N., Rimando, A. M., Duke, S. O., and Nandula, V. K. 2008. Aminomethylphosphonic acid accumulation in plant species treated with glyphosate. J. Agric. Food Chem 56:21252130.
Reddy, K. N. and Whiting, K. 2000. Weed control and economic comparisons of glyphosate-resistant, sulfonylurea-tolerant, and conventional soybean (Glycine max) systems. Weed Technol 14:204211.
Seefeldt, S., Jensen, J., and Fuerst, P. 1995. Log-logistic analysis of herbicide dose-response relationships. Weed Technol 9:218227.
Shaw, D. R. and Arnold, J. C. 2002. Weed control from herbicide combinations with glyphosate. Weed Technol 16:16.
Siehl, D. L. 1997. Inhibitors of EPSPS synthase, glutamine synthetase and histidine synthesis. Pages 3767. in Roe, R. M., Burton, J. D., and Kuhr, R. J. Herbicide Activity: Toxicology, Biochemistry and Molecular Biology. Amsterdam: IOS.
Singh, B. K. and Shaner, D. L. 1998. Rapid determination of glyphosate injury to plants and identification of glyphosate resistant plants. Weed Technol 12:527530.
Steinrücken, H. C. and Amrhein, N. 1980. The herbicide glyphosate is a potent inhibitor of 5-enolpyruvyl-shikimic acid 3-phosphate synthase. Biochem. Biophys. Res. Community 94:12071212.
Stephenson, D. O. IV, Oliver, L. R., and Bond, J. A. 2007. Response of pitted morningglory (Ipomoea lacunosa) accessions to chlorimuron, fomesafen, and glyphosate. Weed Technol 17:179185.
Webster, E. P., Bryant, K. J., and Earnest, L. D. 1999. Weed control and economies in nontransgenic and glyphosate-resistant soybean (Glycine max). Weed Technol 13:586593.

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