Suscetibilidade de Plutella xylostella (L.) (Lepidoptera: Plutellidae) aos fungos Beauveria bassiana (Bals.) Vuill. e Metarhizium anisopliae (Metsch.) Sorok

Silva, Valda C.A.; Barros, Reginaldo; Marques, Edmilson Jacinto; Torres, Juliana Rezende

doi:10.1590/s1519-566x2003000400016

Cited by 13 publications

(5 citation statements)

References 5 publications

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“…In our study, M. anisopliae isolates showed higher mortality of 81-88% than B. bassiana isolates (51-77%) at 10 7 conidia/ml concentration. Suwannakut et al (2005) reported that variation in virulence can be attributed due to genetic diversity of the isolates, based on insect host and geographical region. This laboratory studies helped in identifying the local promising isolates for further field testing against P. xylostella in crucifer's crops.…”

Section: Laboratory Bioassaymentioning

confidence: 99%

Evaluation of Beauveria bassiana and Metarhizium anisopliae isolates against Plutella xylostella (L.) under laboratory conditions

Poornesha

Ramanujam

2020

Journal of Biological Control

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Twenty isolates each of Beauveria bassiana and Metarhizium anisopliae were tested against the second instar larvae of Plutella xylostella through laboratory bioassay using larval dip method at the concentration of 1×10 7 conidia/ml. Higher larval mortality of 88.85% and 81.44%, were observed with NBAIR Ma-4 and NBAIR Ma-35 isolates of M. anisopliae and 77.36% with NBAIR-Bb-5a isolate of B. bassiana. Further studies on dose and time mortality with four isolates indicated lowest LC 50 value of 2.6×10 4 conidia/ml and LT 50 of 86.6 hours with NBAIR Ma-35 isolate. These isolates have to be further tested against P. xylostella in infested fields of cabbage and cauliflower.

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“…14,15) In addition, other een compounds, previously synthesized, had their insecticidal activity pro le re-evaluated in further detail against the same species.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and insecticidal activity of new phosphoramidates

et al. 2012

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Compounds known as phosphoramidates have been reported in the literature to have insecticidal activity. In the present investigation, four new phosphoramidates were synthesized and biologically evaluated with regard to their potential insecticidal activity. Moreover, another fifteen compounds had their biological activity profile re-evaluated in further detail against three Lepidoptera species of economic importance. The best results were observed with the four new organophosphates against Ascia monuste.

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“…Similarly, a lower frequency of S. calamistis was recorded in B. bassiana treated maize plants compared to non-inoculated maize plants. 39 Research from Valda et al 40 and Godonou et al 41 proved the effectiveness of B. bassiana strains on a diamondback moth population, Plutella xylostella L. (Lepidoptera: Plutellidae). Similarly, the survivorship and development of banana weevil larvae, Cosmopolites sordidus Germar (Coleoptera: Curculionidae) were significantly affected by endophytic B. bassiana strains 35 as were the adult banana weevils as reported in Ghana.…”

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confidence: 99%

Establishment of Beauveria bassiana isolates as endophytes in rice cultivars and their biocontrol efficacy against rice stem borer, Sesamia calamistis

et al. 2020

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Possible endophytic colonisation of rice cultivar parts (leaves, stem and roots) by Beauveria bassiana isolates and their potential as biocontrol agents against Sesamia calamistis Hampson (African pink stem borer) were investigated. Five promising B. bassiana isolates were evaluated for their endophytic colonisation, the effectiveness of the inoculation methods and the efficacy of the isolates as biocontrol agents against S. calamistis. The plant part colonised is often dependent on the inoculation method. Colonisation of plant parts was assessed at 30 and 60 days after seed inoculation and foliar spray. For the pathogenicity activity, third instar larvae of S. calamistis were fed with rice stems that were previously inoculated with endophytic isolates of B. bassiana. Both inoculation methods led to the colonisation of the rice cultivar tissues, but were affected by the interactions of cultivars x isolates x inoculation methods. The colonisation of the cultivar plant parts varied over time (30- and 60-day intervals), and was affected by the inoculation method used. For both inoculation methods, highly significant differences were observed in the roots and the leaves over time (p=0.0001). However, with seed treatment, there was no significant difference in levels of colonisation in stems by the isolates x time (p=0.32). The B. bassiana isolates were pathogenic on the third instar larvae of S. calamistis, causing mortalities of more than 50% at 28 days after treatment. However, the virulence of the isolates varied. According to the isolates and the inoculation methods, B. bassiana formed an endophytic relationship with rice plants, and produced various mortality rates.

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“…(SOUZA et al, 1981;TOLEDO FILHO, 1982;INSTITUTO BRASILEIRO DO CAFÉ, 1986;. Em média, 8 gerações podem ocorrer por ano no Brasil, chegando a 12 no período de colheita (SOUZA, 2018).…”

Section: Ciclounclassified

“…Esses resultados também foram observados no trabalho de Souza(2019), onde utilizou-se fungos endofíticos entomopatogênicos para o controle da broca-do-café e observouse que a mortalidade das brocas foi mais elevada principalmente entre o 3° e 5° dia Silva et al, (2003). Defendem que a fase larval é a mais recomendada para o estudo de entomopatogenicidade de fungos.…”

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Diversidade e patogenicidade de fungos endofíticos em cafeeiro, e sua interação com produtos fitossanitários, visando ao controle do bicho-mineiro, Leucoptera coffeella (Lepidoptera: Lyonetiidae) (Guérin-Méneville, 1842)

Nunes¹

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A cafeicultura tem grande importância no cenário econômico brasileiro, sendo o maior produtor e exportador mundial de café. Uma das principais pragas do cafeeiro, é o bicho-mineiro (Leucoptera coffeella), responsáveis por prejuízos de até 70% nas culturas. Contudo, sua principal forma de controle, ainda é o uso de agrotóxicos, que ocasionam resistência em pragas, eliminação de organismos benéficos a lavoura e ainda, contaminação do meio ambiente. Para contornar estes problemas, é necessário o aprofundamento de estudos sobre controle biológico de pragas. Os fungos entomopatogênicos, podem se expressar de forma endofítica nas plantas, sem causar qualquer dano ao seu desenvolvimento e ter a capacidade de reduzir a população de pragas abaixo do nível de dano. O objetivo deste trabalho foi avaliar a diversidade de ocorrência de fungos endofíticos isolados de folhas, caules e raízes de cafeeiros orgânicos da região mogiana e paulista e o seu potencial entomopatogênico sobre o bicho-mineiro. Para isso, foram coletadas amostras vegetais de 4 propriedades, divididas em 4 pontos cardeais da planta (norte, sul, leste e oeste). Estes, passaram por um screening em larvas de Galleria mellonella e de todas as 101 morfoespécies isoladas, 18 apresentaram capacidade entomopatogênica na concentração de 1,0 x108 conídios ml-1 . A região de Itapira demonstrou maior quantidade de isolados com capacidade patogênica e as amostras provenientes dos pontos cardeais norte e sul, e da região do caule também apresentaram variabilidade superior. Os fungos Beauveria bassiana, Cordyceps fumosorosea e Aspergillus clavatonanicus causaram mortalidade de 52,34% - 70,86 e respectivamente, em larvas de L. coffeella. Tais fungos também foram testados quanto a sua compatibilidade com produtos fitossanitários e capacidade de colonização dos tecidos foliares por meio de pulverização em mudas de café. Os fungos A. clavatonanicus e C. fumosorosea apresentaram grande capacidade de colonização de tecidos foliares por pulverização e os fungos B. bassiana e 13E apresentaram compatibilidade com a maioria dos inseticidas testados.

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Suscetibilidade de Plutella xylostella (L.) (Lepidoptera: Plutellidae) aos fungos Beauveria bassiana (Bals.) Vuill. e Metarhizium anisopliae (Metsch.) Sorok

Abstract: Susceptibility of

Cited by 13 publications

References 5 publications

Evaluation of Beauveria bassiana and Metarhizium anisopliae isolates against Plutella xylostella (L.) under laboratory conditions

Synthesis and insecticidal activity of new phosphoramidates

Establishment of Beauveria bassiana isolates as endophytes in rice cultivars and their biocontrol efficacy against rice stem borer, Sesamia calamistis

Diversidade e patogenicidade de fungos endofíticos em cafeeiro, e sua interação com produtos fitossanitários, visando ao controle do bicho-mineiro, Leucoptera coffeella (Lepidoptera: Lyonetiidae) (Guérin-Méneville, 1842)

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