Potential of Beauveria bassiana and Metarhizium anisopliae isolates from Benin to control Plutella xylostella L. (Lepidoptera: Plutellidae)

Godonou, I.; James, B.; Atcha-Ahowé, C.; Vodouhè, Simplice D.; Kooyman, C.; Ahanchédé, Adam; Korie, Sam

doi:10.1016/j.cropro.2008.10.009

Cited by 56 publications

(40 citation statements)

References 6 publications

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“…As reported from several tropical countries (Talekar and Shelton, 1993;Baek et al, 2005;Nyambo and Löhr, 2005;Ayalew, 2006;Odhiambo et al, 2010;Santos et al, 2011;Zhou et al, 2011;Legwaila et al, 2014), P. xylostella populations from Togo and Benin also appear to be resistant to a number of insecticides commonly used in different agroecosystems (Goudegnon et al, 2000;Martin et al, 2006;Godonou et al, 2009;Agboyi et al, 2013). As a reaction to this phenomenon, cabbage producers have entered the vicious circle of increasing both insecticide dosage rates and spraying frequencies (Ahouangninou et al, 2012), which can lead to environmental and health hazards (Pimentel et al, 1997;Gallivan et al, 2001).…”

Section: Introductionmentioning

confidence: 89%

Pesticide resistance in Plutella xylostella (Lepidoptera: Plutellidae) populations from Togo and Benin

Agboyi

Ketoh

Martin

et al. 2016

Int. J. Trop. Insect Sci.

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Abstract. The diamondback moth, Plutella xylostella (L.) is the major insect pest of cabbage crops in Togo and Benin. For control, farmers very often resort to spraying chemical insecticides at high dosages with frequent applications. Bioassays were carried out on three populations of P. xylostella, two from Togo (Kara and Dapaong) and one from Benin (Cotonou), to assess their level of susceptibility to currently used insecticides. A reference strain of P. xylostella from Matuu in Kenya was used as a control. In the laboratory, three insecticide representatives of different chemical families (deltamethrin, chlorpyrifos ethyl and spinosad) were assayed against third instar larvae of P. xylostella. Results revealed that P. xylostella populations from Dapaong, Kara and Cotonou were more resistant to deltamethrin (13 to 59-fold at LC 50 level, 149 to 1772-fold at LC 90 level) and chlorpyrifos ethyl (5 to 15-fold at LC 50 level, 9 to 885-fold at LC 90 level) than the reference strain. Spinosad was more toxic to P. xylostella populations than the other insecticides with LC 50 and LC 90 values less than 1 µg/ml and 15 µg/ml, respectively. However, the population from Cotonou appeared significantly more resistant to spinosad compared to the reference strain. These results are discussed in the light of developing an integrated pest management strategy for reducing the selection pressure of spinosad.

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Section: Introductionmentioning

confidence: 89%

Pesticide resistance in Plutella xylostella (Lepidoptera: Plutellidae) populations from Togo and Benin

Agboyi

Ketoh

Martin

et al. 2016

Int. J. Trop. Insect Sci.

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“…Some researchers have focused on natural compounds from entomopathogenic fungi as a substitute to conventional insecticides (Godonou et al., ). Spore suspensions of Beauveria bassiana have proved to be effective against agricultural pests in some parts of the world.…”

Section: Introductionmentioning

confidence: 99%

IDENTIFICATION AND MOLECULAR CHARACTERIZATION OF TWO SERINE PROTEASES AND THEIR POTENTIAL INVOLVEMENT IN PROPHENOLOXIDASE ACTIVATION IN Plutella xylostella

Gao

et al. 2016

Arch Insect Biochem Physiol

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The proteolytic activation of prophenoloxidase (proPO) is a humoral defense mechanism in insects and crustaceans. Phenoloxidase (PO) is produced as an inactive precursor namely, proPO and is activated via specific proteolytic cleavage by proPO-activating proteinase. The current research reports two novel serine proteinase genes (PxSP1-768 bp and PxSP2-816 bp) from Plutella xylostella, encoding 255 and 271 amino acid residues, respectively. Tissue distribution analyses by semiquantitative reverse transcription-PCR (RT-PCR) revealed the resultant genes to be primarily expressed in the hemocytes, while quantitative-RT-PCR (qRT-PCR) assay showed that transcription level of PxSP1 and PxSP2 increased significantly after injection of the fungal pathogen Beauveria bassiana. Purified recombinant fusion proteins of PxSP2 and PxSP1 were injected to New Zealand white rabbits and polyclonal antibodies were generated with the titers of 1:12,800. After silencing the expression of PxSP2 by RNAi, the PO activity decreased significantly. The results show that PxSP2 is involved in prophenoloxidase activation in P. xylostella.

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“…Porém, o uso intensivo de produtos químicos pode provocar seleção de populações resistentes da praga (Godonou et al, 2009), assim como danos aos inimigos naturais, polinizadores e animais silvestres, além dos efeitos tóxicos ao homem no momento da aplicação e por resíduos deixados nos alimentos e no ambiente (Silva et al 2009). …”

Section: Introductionunclassified

Controle alternativo do Brevicoryne brassicae (Hemiptera: Aphididae) com extratos de diferentes espécies de plantas

Botti

Holtz

Paulo

et al. 2015

Agraria

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RESUMOA utilização de extratos e óleos obtidos de plantas tem sido sugerida como uma alternativa para o manejo de pragas, pois os mesmos são seletivos, biodegradáveis e têm poucos efeitos sobre organismos não-alvo. Sendo assim, o objetivo do presente estudo foi avaliar o efeito do extrato aquoso de folhas de nim indiano (Azadirachta indica), frutos de pimenta malagueta (Capsicum frutescens) e óleo bruto de pinhão manso (Jatropha curcas), em diferentes concentrações, visando o manejo do pulgão da couve Brevicoryne brassicae. Foi avaliada a mortalidade dos indivíduos em função do tempo pós-pulverização. A mortalidade de B. brassicae seguiu um padrão crescente com os dias de avaliação, sendo que os maiores índices de mortalidade foram obtidos com 72 h após aplicação dos extratos e óleos. As diferentes espécies de plantas testadas mostraram-se eficiente no manejo de B. brassicae. Contudo, o óleo de pinhão manso mostrou-se mais eficiente em relação às outras espécies, devido à maior mortalidade do pulgão nas primeiras 24 e 48 h pós-pulverização. Palavras-chave:Manejo alternativo, nim, pimenta, pinhão manso Alternative control of Brevicoryne brassicae (Hemiptera: Aphididae) with extracts of different species of plants ABSTRACTThe use of extracts and oils obtained from plants has been suggested as an alternative control of pests, because they are selective, biodegradable and have few effects on non-target organism. Therefore, the objective of this study was to value the effect of aqueous extract of leaves of neem (Azadirachta indica), fruits of chili pepper (Capsicum frutescens) and rough oil of jatropha (Jatropha curcas) in different concentrations, in order the management of the cabbage aphid Brevicoryne brassicae. The mortality of individuals was accessed in function of time after spraying. The mortality of B. brassicae followed an increasing standard with the evaluation days, with the highest mortality rates were obtained at 72 h after application of the extracts and oils.The different species of plants tested were efficient in the management of B. brassicae. However, the jatropha oil was shown more efficient compared to other species tested, due to the higher aphid mortality in the first 24 and 48 h after spraying.

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Potential of Beauveria bassiana and Metarhizium anisopliae isolates from Benin to control Plutella xylostella L. (Lepidoptera: Plutellidae)

Cited by 56 publications

References 6 publications

Pesticide resistance in Plutella xylostella (Lepidoptera: Plutellidae) populations from Togo and Benin

Pesticide resistance in Plutella xylostella (Lepidoptera: Plutellidae) populations from Togo and Benin

IDENTIFICATION AND MOLECULAR CHARACTERIZATION OF TWO SERINE PROTEASES AND THEIR POTENTIAL INVOLVEMENT IN PROPHENOLOXIDASE ACTIVATION IN Plutella xylostella

Controle alternativo do Brevicoryne brassicae (Hemiptera: Aphididae) com extratos de diferentes espécies de plantas

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