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Improved mortality of the Formosan subterranean termite by fungi, when amended with cuticle-degrading enzymes or eicosanoid biosynthesis inhibitors
MS. Wright, AR. Lax,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články
- MeSH
- analýza přežití MeSH
- chitinasy metabolismus MeSH
- dexamethason metabolismus MeSH
- dezinsekce metody MeSH
- Hypocreales růst a vývoj metabolismus MeSH
- ibuprofen metabolismus MeSH
- ikosanoidy antagonisté a inhibitory MeSH
- insekticidy metabolismus MeSH
- Isoptera metabolismus mikrobiologie fyziologie MeSH
- lipasa metabolismus MeSH
- proteasy metabolismus MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Formosan subterranean termites (FST) were exposed to strains of Beauveria pseudobassiana (Bpb) and Isaria fumosorosea (Ifr) to determine virulence of the fungi. Once lethality was determined, sublethal doses of Bpb were combined with enzymes capable of degrading the insect cuticle to measure the potential to enhance fungal infection. Bpb applied to FST in combination with proteinases and a chitinase caused increased mortality over the fungus alone. Mortality was enhanced when Ifr was applied to FST in combination with a chitinase isolated from Serratia marcesans. A lipase isolated from Pseudomonas cepacia, when combined with Ifr, also resulted in greater mortality than all control treatments. FST were also exposed to the eicosanoid biosynthesis inhibitors (EBIs) dexamethasone (DEX), ibuprofen (IBU), and ibuprofen sodium salt (IBUNA), in combination with Ifr. Combining Ifr with IBUNA caused significantly increased mortality on days 6, 7, and 9. Cuticle-degrading enzymes and EBIs may have potential to enhance the pathogenic effect of a fungal control agent against the Formosan subterranean termite.
Citace poskytuje Crossref.org
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- $a Formosan subterranean termites (FST) were exposed to strains of Beauveria pseudobassiana (Bpb) and Isaria fumosorosea (Ifr) to determine virulence of the fungi. Once lethality was determined, sublethal doses of Bpb were combined with enzymes capable of degrading the insect cuticle to measure the potential to enhance fungal infection. Bpb applied to FST in combination with proteinases and a chitinase caused increased mortality over the fungus alone. Mortality was enhanced when Ifr was applied to FST in combination with a chitinase isolated from Serratia marcesans. A lipase isolated from Pseudomonas cepacia, when combined with Ifr, also resulted in greater mortality than all control treatments. FST were also exposed to the eicosanoid biosynthesis inhibitors (EBIs) dexamethasone (DEX), ibuprofen (IBU), and ibuprofen sodium salt (IBUNA), in combination with Ifr. Combining Ifr with IBUNA caused significantly increased mortality on days 6, 7, and 9. Cuticle-degrading enzymes and EBIs may have potential to enhance the pathogenic effect of a fungal control agent against the Formosan subterranean termite.
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