Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-21T23:34:47.108Z Has data issue: false hasContentIssue false

The Influence of pH and Light on Hydrilla (Hydrilla verticillata) Photosynthesis and Chlorophyll after Exposure to Flumioxazin

Published online by Cambridge University Press:  20 January 2017

Christopher R. Mudge*
Affiliation:
Center for Aquatic and Invasive Plants, Institute of Food and Agricultural Sciences, University of Florida, P.O. Box 110610, Gainesville, FL 32611
Brett W. Bultemeier
Affiliation:
Center for Aquatic and Invasive Plants, Institute of Food and Agricultural Sciences, University of Florida, P.O. Box 110610, Gainesville, FL 32611
William T. Haller
Affiliation:
Center for Aquatic and Invasive Plants, Institute of Food and Agricultural Sciences, University of Florida, P.O. Box 110610, Gainesville, FL 32611
*
Corresponding author's E-mail: [email protected]

Abstract

Flumioxazin has recently (2010) been registered for aquatic use for control of hydrilla and other noxious invasive aquatic plant species. Due to the rapid degradation of flumioxazin, especially in high pH water, some hydrilla research trials have produced less than desirable results with rapid plant regrowth. Therefore, laboratory experiments were conducted to evaluate the influence of pH on flumioxazin's effect on photosynthesis. Flumioxazin applied at concentrations ≥ 200 µg ai L−1 in high (9.0) pH water and ≥ 100 µg L−1 in low (6.0) pH water required 68 to 123 h to reduce photosynthesis by 50% (ET50). The effect of 400 µg L−1 flumioxazin on photosynthesis of apical hydrilla tips was also compared at low (20 µmol m−2 s−1), medium (170 µmol m−2 s−1), and high (400 µmol m−2 s−1) light levels at pH 9.0. Low light–treated tips were still photosynthetic at approximately 73% of the nontreated control plants 168 h after treatment. Low light–treated hydrilla required an estimated 303 h to achieve a 50% reduction in photosynthesis, while high light plants only required 99 h. Chlorophyll content of hydrilla was reduced as flumioxazin concentration was increased from 100 to 1,600 µg L−1. These data indicate that flumioxazin activity on hydrilla photosynthesis is influenced by herbicide concentration, water pH, and light intensity.

Type
Physiology, Chemistry, and Biochemistry
Copyright
Copyright © 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.)

Footnotes

Current address: U.S. Army Engineer Research and Development Center, Vicksburg, MS 39180.

References

Literature Cited

Aizawa, H. and Brown, H. M. 1999. Metabolism and degradation of porphyrin biosynthesis herbicides. Pages 348381 in Böger, P. and Wakabayashi, K., eds., Peroxidizing Herbicides Berlin Springer-Verlag.Google Scholar
Arnon, D. I. 1949. Copper enzymes in isolated chloroplasts. Polyphenoloxidase in Beta vulgaris . Plant Physiol. 24:115.Google Scholar
Bowes, G. A., Holaday, A. S., and Haller, W. T. 1979. Seasonal variation in the biomass, tuber density, and photosynthetic metabolism of hydrilla in three Florida lakes. J. Aquat. Plant Manage. 9:5558.Google Scholar
Bultemeier, B. W., Netherland, M. D., Ferrell, J. A., and Haller, W. T. 2009. Differential herbicide response among three phenotypes of Cabomba caroliniana . Invasive Plant Sci. Manage. 2:352359.Google Scholar
Cobb, A. 1992. Herbicides that inhibit photosynthesis. Pages 4680 in Cobb, A., ed. Herbicides and Plant Physiology. London Chapman and Hall.Google Scholar
Cook, C.D.K. 1985. Range extensions of aquatic vascular plant species. J. Aquat. Plant Manage. 30:1520.Google Scholar
Cranmer, J. R., Altom, J. V., Braun, J. C., and Pawlak, J. A. 2000. Valor herbicide: a new herbicide for weed control in cotton, peanuts, soybeans, and sugarcane. Proc. South. Weed Sci. Soc. 53:158.Google Scholar
Doong, R. L., MacDonald, G. E., and Shilling, D. G. 1993. Effect of fluridone on chlorophyll, carotenoid and anthocyanin content of hydrilla. J. Aquat. Plant Manage. 31:5559.Google Scholar
Haller, W. T. and Sutton, D. L. 1975. Community structure and competition between hydrilla and vallisneria. Hyacinth Contr. J. 13:4850.Google Scholar
Hartzler, B. 2004. Sulfentrazone and Flumioxazin Injury to Soybean. http://www.weeds.iastate.edu/mgmt/2004/ppoinjury.shtml. Accessed: May 5, 2011.Google Scholar
Hiscox, J. D. and Israelstam, G. F. 1979. A method for the extraction of chlorophyll from leaf tissue without maceration. Can. J. Bot. 57:13321334.Google Scholar
Katagi, T. 2003. Hydrolysis of n-phenylimide herbicide flumioxazin and its anilic acid derivative in aqueous solutions. J. Pestic. Sci. 28:4450.Google Scholar
Kwon, J. W., Armbrust, K. L., and Grey, T. L. 2004. Hydrolysis and photolysis of flumioxazin in aqueous buffer solutions. Pest Manage. Sci. 60:939943.Google Scholar
MacDonald, G. E., Querns, R., Shilling, D. G., Bewick, T. A., and McDonald, S. K. 2003. The Influence of formulation, buffering, pH and divalent cations on the activity of endothall on hydrilla. J. Aquat. Plant Manage. 41:1318.Google Scholar
MacDonald, G. E., Querns, R., Shilling, D. G., McDonald, S. K., and Bewick, T. A. 2002. Activity of endothall on hydrilla. J. Aquat. Plant Manage. 40:6871.Google Scholar
Matringe, M., Camadro, J. M., Labette, P., and Scalla, R. 1989. Protoporphyrinogen oxidase as a molecular target for diphenyl ether herbicides. Biochem. J. 260:231235.Google Scholar
Mudge, C. R. 2007. Characterization of Flumioxazin as an Aquatic Herbicide. Ph.D. dissertation. Gainesville, FL University of Florida. 120 p.Google Scholar
Mudge, C. R., Haller, W. T., Netherland, M. D., and Kowalsky, J. K. 2010. Evaluating the influence of pH-dependent hydrolysis on the efficacy of flumioxazin for hydrilla control. J. Aquat. Plant Manage. 48:2530.Google Scholar
Netherland, M. D. and Getsinger, K. D. 1995a. Laboratory evaluation of threshold fluridone concentrations under static conditions for controlling hydrilla and Eurasian watermilfoil. J. Aquat. Plant Manage. 33:3336.Google Scholar
Netherland, M. D. and Getsinger, K. D. 1995b. Potential control of hydrilla and Eurasian watermilfoil under various fluridone half-life scenarios. J. Aquat. Plant Manage. 33:3642.Google Scholar
Netherland, M. D. and Lembi, C. A. 1992. Gibberellin synthesis inhibitor effects on submersed aquatic weed species. Weed Sci. 40:2936.Google Scholar
Price, A. J., Wilcut, J. W., and Cranmer, J. R. 2002. Flumioxazin preplant burndown weed management in strip-tillage cotton (Gossypium hirsutum) planted into wheat (Triticum aestivum). Weed Technol. 16:762767.Google Scholar
Price, A. J., Wilcut, J. W., and Cranmer, J. R. 2004. Flumioxazin preplant or post-directed application timing followed by irrigation at emergence or after post-directed spray treatment does not influence cotton yield. Weed Technol. 18:310314.Google Scholar
Senseman, S. A., ed. 2007. Herbicide Handbook. 9th ed. Lawrence, KS Weed Science Society of America. 458 p.Google Scholar
Sherman, T. D., Becerril, J. M., Matsmoto, H., Duke, M. V., Jacobs, J. M., Jacobs, N. J., and Duke, S. O. 1991. Physiological basis for differential sensitivities of plant species to protoporphyrinogen oxidase inhibitory herbicides. Plant Physiol. 97:280287.Google Scholar
Steward, K. K. 1991. Light requirements for growth of monoecious hydrilla from the Potomac River. Florida Scientist. 54:204214.Google Scholar
[USDA] United States Department of Agriculture. 2007. Plants Database. http://plants.usda.gov/java/. Accessed: May 5, 2011.Google Scholar
Van, T. K., Haller, W. T., and Bowes, G. 1976. Comparison of the photosynthetic characteristics of three submersed aquatic plants. Plant Physiol. 58:761768.Google Scholar
Van, T. K. and Vandiver, V. V. 1992. Response of monoecious and dioecious hydrilla to bensulfuron methyl. J. Aquat. Plant Manage. 30:4144.Google Scholar
Wright, T. R., Fuerst, E. P., Ogg, A. G., Handihall, U. B., and Lee, H. J. 1995. Herbicide activity of UCC-C4243 and acifluorfen is due to inhibition of protoporphyrinogen oxidase. Weed Sci. 43:4754.Google Scholar