Controlling Non-Target Site Resistant Poa annua with Novel Modes of Action

Jim Brosnan, Ph.D.
2 min readAug 19, 2024

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LITERATURE CITED

  1. Van Wychen, L. (2020). Survey of the most common and troublesome weeds in grass crops, pasture and turf in the United States and Canada. Weed Science Society of America National Weed Survey Dataset. Available at: https://wssa.net/wp-content/uploads/2020-Weed-Survey_grass-crops.xlsx
  2. Brosnan, J. T., Elmore, M. T., & Bagavathiannan, M. V. (2020a). Herbicide-resistant weeds in turfgrass: current status and emerging threats. Weed Technology, 34(3), 424–430.
  3. Brosnan, J. T., Vargas, J. J., Spesard, B., Netzband, D., Zobel, J. M., Chen, J., & Patterson, E. L. (2020c). Annual bluegrass (Poa annua) resistance to indaziflam applied early‐postemergence. Pest Manag. Sci., 76(6), 2049–2057.
  4. Laforest, M., Soufiane, B., Patterson, E.L., Vargas, J.J., Boggess, S.L., Houston, L.C., Trigiano, R.N. and Brosnan, J.T. (2021), Differential expression of genes associated with non-target site resistance in Poa annua with target site resistance to acetolactate synthase inhibitors. Pest Manag Sci, 77: 4993–5000. https://doi.org/10.1002/ps.6541
  5. Brosnan, J. T., Vargas, J. J., Breeden, G. K., Boggess, S. L., Staton, M. A., Wadl, P. A., & Trigiano, R. N. (2017). Controlling herbicide-resistant bluegrass (Poa annua) phenotypes with methiozolin. Weed Technology, 31(3), 470–476.
  6. Brabham C, Johnen P, Hendriks J, et al. Herbicide symptomology and the mechanism of action of methiozolin. Weed Science. 2021;69(1):18–30. doi:10.1017/wsc.2020.87
  7. Kang, I. H., Emptage, R. P., Kim, S. I., & Gutteridge, S. (2023). A novel mechanism of herbicide action through disruption of pyrimidine biosynthesis. Proceedings of the National Academy of Sciences, 120(48), e2313197120.
  8. Han, H., Yu, Q., Beffa, R., González, S., Maiwald, F., Wang, J. and Powles, S.B. (2021), Cytochrome P450 CYP81A10v7 in Lolium rigidum confers metabolic resistance to herbicides across at least five modes of action. Plant J., 105: 79–92. https://doi.org/10.1111/tpj.15040
  9. Pritchard, B. D., Vargas, J. J., Mahey, M., Brosnan, J. T., & Patterson, E. L. (2023). A bioassay to determine Poa annua responses to indaziflam. Frontiers in Agronomy, 5, 1182528.
  10. Laforest, M., Soufiane, B., Patterson, E.L., Vargas, J.J., Boggess, S.L., Houston, L.C., Trigiano, R.N. and Brosnan, J.T. (2021), Differential expression of genes associated with non-target site resistance in Poa annua with target site resistance to acetolactate synthase inhibitors. Pest Manag Sci, 77: 4993–5000. https://doi.org/10.1002/ps.6541
  11. Brosnan, J.T., Vargas, J.J., Spesard, B., Netzband, D., Zobel, J.M., Chen, J. and Patterson, E.L. (2020), Annual bluegrass (Poa annua) resistance to indaziflam applied early-postemergence. Pest Manag Sci, 76: 2049–2057. https://doi.org/10.1002/ps.5740
  12. United States Golf Association. (2024). https://www.usga.org/course-care/specialty-articles/usga-putting-green-construction.html. Online. Accessed 2 August 2024.

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Jim Brosnan, Ph.D.

Professor, Univ. of Tennessee #Turf | #Grass | #Weeds | #Science | #Golf | #Sports | #Lawn | #Resistance | #Offtype IG: jim.brosnan.UT