Effects of Certain Organophosphate and Carbamate Insecticides on Bacillus thuringiensis

Chen, Ker-Sang; Funke, B. R.; Schulz, J. T.; Carlson, Robert B.; Proshold, F. I.

doi:10.1093/jee/67.4.471

Cited by 17 publications

(10 citation statements)

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“…Different techniques can be used to evaluate the effects of chemical products on spores of B. thutingiensis subsp. thuringiensis (Btk) such as paper disks impregnation technique with broth products (DOUGHERTY; REICHELDERFER; FAUST, 1971;JIMENEZ;ACOSTA;FERNANDEZ, 1989) and with liquid culture medium (SUTTER et al, 1971, CHEN et al, 1974, and mixing products to the molten culture medium technique from the works of Salerno, Dias and Sagardoy (1999), Batista Filho; Almeida and Lamas (2001), Almeida et al (2003) and Gassen, Batista Filho and Zappelini (2006). The effects of chemical products on Btk using different techniques was studied by Silva et al (2006Silva et al ( , 2008 and the results varied according to chemical group, technique used, concentration, contact time, and development stage of the pathogen.…”

Section: Introductionmentioning

confidence: 99%

Natural phytosanitary products effects on Bacillus Thuringiensis SUBSP. Kurstaki (Berliner)

Lozano¹,

Alves²,

Martinelo³

et al. 2012

Sem. Ci. Agr.

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Section: Introductionmentioning

confidence: 99%

Natural phytosanitary products effects on Bacillus Thuringiensis SUBSP. Kurstaki (Berliner)

Lozano¹,

Alves²,

Martinelo³

et al. 2012

Sem. Ci. Agr.

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“…At sublethal doses they interact with the latter causing or activating infectious diseases by stress, or turning the insects more susceptible to the action of microbial toxins. In this respect, Chen et al (1974) observed that B. thuringiensis, in combination with carbaryl, had a synergistic effect on the control of Heliothis virescens (Fabr.) larvae.…”

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confidence: 99%

Effect of Thiamethoxam on Entomopathogenic Microorganisms

Filho¹,

Almeida²,

Lamas³

2001

Neotrop. Entomol.

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Efeito do Tiametoxam Sobre Microrganismos EntomopatogênicosRESUMO -A compatibilidade de microrganismos entomopatogênicos com tiametoxam e outros inseticidas foi estudada através de ensaios in vitro e em campo. Os microrganismos testados foram: Aschersonia aleyrodis, Bacillus thuringiensis, Baculovirus anticarsia (VPNAg), Beauveria bassiana, Hirsutella thompsonii, Metarhizium anisopliae, Nomuraea rileyi, Paecilomyces farinosus, Sporothrix insectorum e Verticillium lecanii. Em laboratório, foram testadas duas concentrações de cada produto, o que envolveu as recomendações máxima e mínima para uso em condições de aplicação no campo. Os produtos foram adicionados em meio de cultura específico para crescimento dos entomopatógenos. Foram avaliados os crescimentos reprodutivo e vegetativo para fungos e unidades formadoras de colô-nias (UFC) para bactérias. Para os testes conduzidos em campo foram consideradas as UFC para fungos e bactéria e a mortalidade de lagartas para o NPV de Anticarsia gemmatalis (Hueb.). Os resultados mostraram que: (1) a ação dos produtos fitossanitários sobre o crescimento vegetativo e a esporulação dos microrganismos variou em função da natureza química dos produtos, da concentração e da espécie do agente microbiano; (2) ABSTRACT -The compatibility of entomopathogenic microorganisms with thiamethoxam and other insecticides was studied in vitro and under field conditions. The microorganisms tested were: Aschersonia aleyrodis, Bacillus thuringiensis, Baculovirus anticarsia (NPVAg), Beauveria bassiana, Hirsutella thompsonii, Metarhizium anisopliae, Nomuraea rileyi, Paecilomyces farinosus, Sporothrix insectorum and Verticillium lecanii. Two concentrations of each product were tested in the laboratory, based on the maximum and minimum recommended rates for application in the field. The products were added to specific culture medium for growth of the entomopathogens. Reproductive and vegetative growth were evaluated for fungi, and colony forming units (CFU) were evaluated for bacteria. For the field test, CFUs were considered for both fungi and bacteria and caterpillar mortality for the NPV of Anticarsia gemmatalis (Hueb.). Results showed that: (1) the action of the pesticides on the vegetative growth and sporulation of the microorganisms varied as a function of the chemical nature of the products, its concentration and the microbial species; (2) thiamethoxam was compatible with all microorganisms studied; (3) endosulfan, monocrotophos and deltamethrin were the insecticides that most affected B. thuringiensis, B. bassiana, M. anisopliae and S. insectorum; (4) thiamethoxam did not affect the inoculum potential of B. thuringiensis, B. bassiana or M. anisopliae when applied to bean crop (Phaseolus vulgaris); and (5) thiamethoxam did not affect the efficiency of the nuclear polyhedral virus of A. gemmatalis.

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“…When this condition holds, the environmental disturbances caused by chemical toxicants can be minimized. CHEN et al (1974) demonstrated that carbaryl, methomyl, phosmet and carbofuran were syner istic when combined with B. thuringiensis to control Heliothis virescens Karvae, while stirophos was antagonistic and trichlorofan and propoxur had no significant effect.…”

Section: Us Copyright Clearance Centermentioning

confidence: 99%

“…The use of microbial a ents in combination with chemical insecticides HALL 1963; SUTTER GOVINDARAJAN et al 1976). However, the lack of information on compatibility between pathogens and chemical insecticides has provoked contradictory conclusions (BENZ 1971; SUTTER MORRIS 1972; ALTAHTAWY and ABALESS 1972;CHEN et al 1974;MORRIS 1975 and1977). TRUDGILL et al (1971) and MACRAE and CELO (1974) mentioned that organophosphorus and organochlorinated insecticides may cause cell lysis in bacteria.…”

Section: Introductionmentioning

confidence: 99%

Compatibility and synergism between Bacillus thuringiensis var. kurstaki and two chemical insecticides

Habib

Garcia

1981

Zeitschrift für Angewandte Entomologie

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Insect cell lines in suspension, cultivated in roller bottles 7 8. MITSUHASHI, J.; MARAMOROSCH, K., 1964: "Leafhopper Tissue Culture: Embryonic, Nymphal, and Imaginal Tissues from Aseptic Insects". Contrib. Boyce Thompson Inst. 22, 435. AbstractGermination and growth rates of Bacillus thuringiensis var. kurstaki were measured in artificial medium containing chemical insecticides. Methyl parathion was highly compatible with the bacterium. The higher concentrations of this chemical (1.88 and 3.75 ppm) enhanced the bacterial germination and reproduction. Pyrethroid was also found to be compatible with the bacterium. Concentrations of 1.44 ppm at p H 6.5 and 2.89 ppm at p H 8.6 of pyrethroid stimulated bacterial germination.The susceptibility of S odoptera frugiperda larvae was determined for the bio-insecticide when combined with either of tce two chemical insecticides. The organophosphorus com ound as well comtined, methyl parathion increased t i e toxicity effect of pyrethroid against S. frugiperda larvae.as p rethroid showed inapparent anta onism with the pathogen. When the two c R emicals were 2. ang. Ent. 91 (1981), 7-14 0 1981 Verlag Paul Parey, Hamburg und Berlin ISSN 0044-2240 / Intercode: ZANEAE has recently received a great % eal of attention (STEINHAUS 1956; FRANZ 1961;

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Effects of Certain Organophosphate and Carbamate Insecticides on Bacillus thuringiensis

Cited by 17 publications

References 0 publications

Natural phytosanitary products effects on Bacillus Thuringiensis SUBSP. Kurstaki (Berliner)

Natural phytosanitary products effects on Bacillus Thuringiensis SUBSP. Kurstaki (Berliner)

Effect of Thiamethoxam on Entomopathogenic Microorganisms

Compatibility and synergism between Bacillus thuringiensis var. kurstaki and two chemical insecticides

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