Somatic mutation-mediated evolution of herbicide resistance in the nonindigenous invasive plant hydrilla (Hydrilla verticillata)

Molecular Ecology
Albrecht MichelFranck E Dayan

Abstract

Hydrilla (Hydrilla verticillata L.f. Royle) was introduced to the surface water of Florida in the 1950s and is today one of the most serious aquatic weed problems in the USA. As a result of concerns associated with the applications of pesticides to aquatic systems, fluridone is the only USEPA-approved chemical that provides systemic control of hydrilla. After a decrease in fluridone's efficacy at controlling hydrilla, 200 Florida water bodies were sampled to determine the extent of the problem and the biological basis for the reduced efficacy. Our studies revealed that hydrilla phenotypes with two- to six-fold higher fluridone resistance were present in 20 water bodies. Since fluridone is an inhibitor of the enzyme phytoene desaturase (PDS), the gene for PDS (pds) was cloned from herbicide-susceptible and -resistant hydrilla plants. We report for the first time in higher plants three independent herbicide-resistant hydrilla biotypes arising from the selection of somatic mutations at the arginine 304 codon of pds. The three PDS variants had specific activities similar to the wild-type enzyme but were two to five times less sensitive to fluridone. In vitro activity levels of the enzymes correlated with in vivo resistance of the c...Continue Reading

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Citations

Jun 23, 2010·BMC Genetics·Carla LambertiniHans Brix
Sep 16, 2008·Journal of Plant Physiology·Isaac Kirubakaran Sundar, Natarajan Sakthivel
Dec 21, 2006·Plant Biotechnology Journal·Renée S AriasBrian E Scheffler
Jan 11, 2014·Pest Management Science·Danica E Goggin, Stephen B Powles
Aug 2, 2018·Pest Management Science·Daniel Simberloff, Christy Leppanen
Mar 12, 2019·Pest Management Science·Mirella F OrtizCody J Gray
Nov 24, 2019·American Journal of Botany·Lori K BenoitNicholas P Tippery
Oct 24, 2019·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Chelsea H LamSwee J Teh
Mar 12, 2020·Proceedings. Biological Sciences·Adam J OrrRobert Lanfear
Feb 14, 2020·Genome Génome / Conseil National De Recherches Canada·Mark A A Minow, Joseph Colasanti
May 21, 2020·The Journal of Biological Chemistry·Todd A GainesFranck E Dayan
Oct 2, 2019·Plants·Brent P Murphy, Patrick J Tranel
Aug 29, 2020·Bulletin of Environmental Contamination and Toxicology·Sean B BuczekMark A Heilman
Feb 20, 2021·Annals of Botany·Violeta I Simón-PorcarMario Vallejo-Marín
Nov 18, 2005·Progress in Lipid Research·Florence BouvierBilal Camara
Sep 26, 2021·Molecular Biology and Evolution·Yifan RenLong Wang

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