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      Efecto de plantas hospederas en la inducción enzimática detoxificativa de Bemisia tabaci (Gennadius) Translated title: Effect of host plants on the induction of detoxifying enzymes of Bemisia tabaci (Gennadius)

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          Abstract

          Bemisia tabaci (Gennadius) es una de las plagas más importantes en la agricultura, debido al amplio rango de plantas hospederas y a las pérdidas económicas que ocasiona. En los últimos años su control ha sido ineficiente, generando resistencia a insecticidad. Sin embargo, se ha comprobado que el hospedero también influye en la inducción de resistencia natural hacia los plaguicidas. El objetivo de la investigación fue determinar los mecanismos y cambios en los niveles enzimático detoxificativos de B. tabaci, recolectada en seis diferentes hospederos en el año 2012, en el estado de Chiapas. Se utilizó el insecticida Bifentrina para evaluar la susceptibilidad de estas poblaciones y la realización de pruebas bioquímicas con el fin de conocer los niveles de las enzimas α y β-esterasas, oxidasas y glutatión s-transferasas. Se observaron cambios en los niveles de α y β-esterasas en poblaciones de B. tabaci desarrolladas en las arvenses Solanum nigrum y Melampodium divaricatum. Por lo que se puede mencionar que la planta hospedera influye en la inducción de enzimas detoxificativas en la resistencia de B. tabaci.

          Translated abstract

          Bemisia tabaci (Gennadius) is one of the most important pests in agriculture, due to the wide range of host plants and economic losses that produces. In recent years, its control has been inefficient, generating insecticide resistance. However, it has been found that the host also influences the induction of natural resistance to pesticides. The objective of the research was to determine the mechanisms and changes in detoxifying enzyme levels of B. tabaci, collected from six different hosts in 2012, in the state of Chiapas. Bifenthrin insecticide was used to assess the susceptibility of these populations and biochemical tests in order to know the levels of α and β-esterase, oxidases and glutathione s-transferases enzymes. Changes in the levels of α and β-esterases were observed in populations of B. tabaci developed in weeds Solanum nigrum and Melampodium divaricatum. It can be said that the host plant influences the induction of detoxifying enzymes in the resistance of B. tabaci.

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          Most cited references 40

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          Probit Analysis

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            Whitefly Biology

             D N Byrne,  T Bellows (1991)
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              Heme peroxidase activity measured in single mosquitoes identifies individuals expressing an elevated oxidase for insecticide resistance.

              Optimum conditions are described for a simple, rapid, microplate-based assay that indirectly measures the differences in oxidase levels between individual susceptible, resistant, or induced mosquitoes. A small proportion (0.01-0.1) of a single mosquito is used, allowing multiple replicates of the oxidase assay. Cytochrome C is used as a positive control. The levels of oxidase found in sample populations of pyrethroid-susceptible, pyrethroid-resistant, and phenobarbital-induced Anopheles albimanus mosquitoes are characterized with the assay.
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                Author and article information

                Journal
                remexca
                Revista mexicana de ciencias agrícolas
                Rev. Mex. Cienc. Agríc
                Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (Texcoco, Estado de México, Mexico )
                2007-0934
                February 2015
                : 6
                : 1
                : 223-229
                Affiliations
                Saltillo Coahuila orgnameUniversidad Autónoma Agraria Antonio Narro orgdiv1Departamento de Parasitología México yisa8a@ 123456yahoo.com
                Article
                S2007-09342015000100019 S2007-0934(15)00600100019

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 25, Pages: 7
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