Toxicity of Tioxazafen to Meloidogyne incognita and Rotylenchulus reniformis
Author:
Faske Travis R.1, Brown Katherine1, Kelly Jesse1
Affiliation:
1. Division of Agriculture, Cooperative Extension Service, Lonoke Extension Center , University of Arkansas System , Lonoke , AR
Abstract
Abstract
Tioxazafen is a seed-applied nematicide used in row crops. Currently, there are no data on nematode toxicity, nematode recovery, or effects of low concentrations of tioxazafen on nematode infection of a host root for Meloidogyne incognita or Rotylenchulus reniformis. Nematode toxicity and recovery experiments were conducted in water solutions of tioxazafen, while root infection assays were conducted on tomato. Nematode paralysis was observed after 24 hr of exposure at 27.0 µg/ml tioxazafen for both the nematode species. Based on an assay of nematode motility, 24-hr EC50 values of 57.69 µg/ml and 59.64 µg/ml tioxazafen were calculated for M. incognita and R. reniformis, respectively. Tioxazafen rates of 2.7 µg/ml and 27.0 µg/ml reduced the nematode hatch after 3 d of exposure for both the nematode species. There was no recovery in nematode motility after the 24-hr exposure of M. incognita and R. reniformis to their corresponding 48-hr EC50 values of 47.15 µg/ml and 47.25 µg/ml tioxazafen, respectively. Mortality of M. incognita continued to increase after 24 hr exposure, whereas R. reniformis mortality remain unchanged after nematodes were rinsed and removed for 48 hr from the tioxazafen solution. A 24-hr exposure to low concentrations of 0.38 to 47.15 µg/ml for M. incognita and 47.25 µg/ml for R. reniformis reduced the infectivity of each nematode species on tomato roots. The toxicity of tioxazafen was similar between nematode species; however, a greater rate of tioxazafen was needed to suppress R. reniformis infection of tomato than for M. incognita.
Publisher
Walter de Gruyter GmbH
Reference17 articles.
1. Bradley, C. A., Allen, T. W., Sisson, A. J., Bergstrom, G. C., Bissonnette, K. M., Bond, J., Byamukama, E., Chilvers, M. I., Collins, A. A., Damicone, J. P., Dorrance, A. E., Dufault, N. S., Esker, P. D., Faske, T. R., Fiorellino, Nicole, Giesler, L. J., Hartman, G. L., Hollier, C. A., Isakeit, T., Jackson-Ziems, T. A., Jardine, D. J., Kelly, H. M., Kemerait, R. C., Kleczewski, N. M., Koehler, A. M., Kratochvil, R. J., Kurle, J. E., Malvick, D. K., Markell, S. G., Mathew, F. M., Mehl, H. L., Mehl, K., Mueller, D. S., Mueller, J. D., Nelson, B. D., Overstreet, C., Padgett, G. B., Price, P. P., Sikora, E. J., Small, I., Smith, D. L., Spurlock, T. N., Tande, C. A., Telenko, D. E. P., Tenuta, A. U., Thiessen, L. D., Warner, F., Wiebold, W. J., and Wise, K. A. 2021. Soybean yield loss estimates due to diseases in the United States and Ontario, Canada from 2015–2019. Plant Health Progress 21. Available at: https://doi.org/10.1094/php-01-21-0013-rs. 2. Byrd, D. W., Jr., Kirkpatrick, T., and Barker, K. R. 1983. An improved technique for clearing and staining plant tissues for detection of nematodes. Journal of Nematology 15:142–143. 3. Cayrol, J. C., Djian, C., and Frankowski, J. P. 1993. Efficacy of abamectin B1 for the control of Meloidogyne arenaria. Fundamental and Applied Nematology 16:239–246. 4. Ernest, A. F., Joyce, A. L., and Thiessen, L. D. 2020. Evaluation of nematicides for the management of root-knot nematode in cotton, 2019. Plant Disease Management Reports 14:N009. 5. Faske, T. R., Allen, T. W., Grabau, Z., Hu, J., Kemerait, R. C., Lawrence, K. S., Mehl, H. L., Mueller, J., Price, P., Thiessen, L. D., and Wheeler, T. A. 2020. Beltwide nematode research and education committee report on field performance of seed- and soil-applied nematicides, 2019. Pp. 192–196 in Proceedings of the Beltwide Cotton Conferences. National Cotton Council of America, Memphis, TN.
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1. Plant nematodes and their management;Nematodes - Ecology, Adaptation and Parasitism [Working Title];2023-08-24
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