| species confirmation of fungal isolates by molecular analysis. | traditional taxonomy of hyphomycetes has been based on conidial morphology and development. in order to confirm species level for the detection and identification of the entomopathogenic fungus, we analysed the species-specific fingerprints to investigate molecular characteristics within isolates of six species and to resolve morphologically atypical isolates. the extent of fingerprint profile observed by rapd was sufficient to confirm the species level of all the isolates. the genetic similarit ... | 2010 | 23100842 |
| spore density and viability of entomopathogenic fungal isolates from indonesia, and their virulence against aphis gossypii glover (homoptera: aphididae). | the focus of this study was on quantifying fitness attributes, such as spore density and viability, and determining the virulence level against aphid (aphis gossypii) nymphs of isolates from the fungal species beauveria bassiana and metarhizium anisopliae. the fungal isolates were obtained from several insects, including plutella xylostella, hypothenemus hampei, bronstispa longissima, a. gossypii, tenebrio molitor, and leptocorisa acuta, that were collected from indonesian islands, such as sumat ... | 2010 | 24575186 |
| optimization of solid-state fermentation for improved conidia production of beauveria bassiana as a mycoinsecticide. | the production of conidia of entomopathogenic beauveria bassiana by solid-state fermentation was studied for the development of a biocontrol agent against aphid myzus persicae. the optimal conditions for conidia production on polished white rice were 40% moisture content, 25℃ culture temperature, 2-day-old seeding culture grown in 3% corn meal, 2% rice bran, 2% corn steep powder medium, initial conidia concentration of 10(7) conidia/g in the wet rice, 10% inoculum size, and use of a polyethylene ... | 2010 | 23956642 |
| cultural characteristics and fruiting body production in cordyceps bassiana. | single ascospore isolates of cordyceps bassiana were observed for their colony pigmentation on sabouraud dextrose agar plus yeast extract (sday) plates and were inoculated in a brown rice medium for production of fruiting bodies. colony pigmentation did not show any relationship with perithecial stromata formation. the isolates were also grown on opposite sides of sday agar plates and were observed for vegetative compatibility. neither vegetative compatibility nor perithecial stromata could be f ... | 2010 | 23956638 |
| successful development of cordyceps bassiana stromata from beauveria bassiana. | a specimen of beauveria bassiana was collected from yang-yang of gangwon province, korea in october 2006. conidial isolates were prepared from the specimen by the dilution method and inoculated in brown rice medium for fruiting body production. after nearly two months incubation for perithecial stromata developed from single isolates as well as from their combinations. they were determined as cordyceps bassiana by observing the stromatal characters and their conidial structures. this is the firs ... | 2010 | 23956619 |
| distribution, occurrence and natural invertebrate hosts of indigenous entomopathogenic fungi of central india. | we report here that, during periodical surveys of insects inhabiting diverse habitats for the collection of entomopathogenic fungi; a large number of isolates were recovered belonging to seven species, from various regions of madhya pradesh and chhattisgarh forest areas and agricultural fields. the most common entomopathogenic fungi such as beauveria bassiana, nomuraea rileyi, paecilomyces farinosus and paecilomyces fumosoroseus were found to infect various insect hosts species naturally viz. hy ... | 2010 | 23100813 |
| 3β,11α-dihy-droxy-17a-oxa-d-homoandrost-5-en-17-one. | the title compound, c(19)h(28)o(4), was prepared from dhea (dehydro-epiandrosterone) by its biotransformation using whole cells of the filamentous fungus beauveria bassiana. the asymmetric unit contains two mol-ecules. the lactone ring is trans-positioned to the neighboring six-membered ring. in the crystal structure, o-h⋯o hydrogen bonds form layers, which are linked to each other by o-h⋯o and c-h⋯o hydrogen bonds. | 2010 | 21588317 |
| production of blastospore of entomopathogenic beauveria bassiana in a submerged batch culture. | the principal objective of this study was to determine the optimal liquid culture conditions in shake flasks for maximal sporulation of beauveria bassiana. the optimal initial ph for the spore production of b. bassiana using potato dextrose broth was 5.2. the screening in shake flasks of carbon and nitrogen sources resulted in the identification of an optimal medium based on 3% sucrose and 1% casamino acid, with a c : n ratio of 22 : 4. using this medium, a production level of 5.65 × 10(7) spore ... | 2009 | 23983537 |
| selection of filamentous fungi of the beauveria genus able to metabolize quercetin like mammalian cells. | microbial biotransformations constitute an important alternative as models for drug metabolism study in mammalians and have been used for the industrial synthesis of chemicals with pharmaceutical purposes. several microorganisms with unique biotransformation ability have been found by intensive screening and put in commercial applications. ten isolates of beauveria sp genus filamentous fungi, isolated from soil in the central brazil, and beauveria bassiana atcc 7159 were evaluated for their capa ... | 2008 | 24031237 |
| cuticle-degrading proteases produced by the entomopathogenic fungus beauveria bassiana in the presence of coffee berry borer cuticle. | a brazilian isolate of beauveria bassiana (cg425) that shows high virulence against the coffee berry borer (cbb) was examined for the production of subtilisin-like (pr1) and trypsin-like (pr2) cuticle-degrading proteases. fungal growth was either in nitrate-medium or in cbb cuticle-containing medium under both buffered and unbuffered conditions. in unbuffered medium supplemented with cuticle, the ph of cultures dropped and pr1 and pr2 activities were detected in high amounts only at a ph of 5.5 ... | 2008 | 24031220 |
| cordyceps bassiana and production of stromata in vitro showing beauveria anamorph in korea. | a cordyceps species was found with a beauveria anamorph state on larval insect cadavers on obong mountains in gangwon provinces, republic of korea. cultures from discharged ascospores formed an anamorph identifiable as beauveria bassiana. this teleomorph-anamorph connection was also confirmed by the in vitro production of fertile ascomata from conidial cultures with morphology like that of field-collected specimen. this is the first report of in vitro production of a teleomorph for any beauveria ... | 2006 | 24039462 |
| preparation of 4-(4'-hydroxyanilino)-5-anilinophthalimide and 4,5-bis-(4'-hydroxyanilino)-phthalimide by microbial hydroxylation. | a microbial screening indicated that two fungal strains, beauveria bassiana dsm 1344=atcc 7159 and cunninghamella elegans dsm 1908=atcc 9245, as well as four bacterial strains belonging to the genus streptomyces were able to hydroxylate 4,5-dianilinophthalimide (daph, cgp52411) to 4-(4'-hydroxyanilino)-5-anilinophthalimide. cunninghamella elegans dsm 1908 turned out to be the most active biocatalyst and was also able to form the dihydroxy derivative, 4,5-bis(4'-hydroxyanilino)phthalimide. the re ... | 1999 | 27389513 |
| parentally provided alkaloid does not protect eggs ofutetheisa ornatrix (lepidoptera: arctiidae) against entomopathogenic fungi. | eggs ofutetheisa ornatrix proved equally vulnerable to fungal infection (beauveria bassiana, paecilomyces lilacinus) whether they contained parentally provided pyrrolizidine alkaloid (monocrotaline) or were free of such alkaloid. in in vitro tests, monocrotaline, either as free base or n-oxide, had no inhibiting effect on fungal cultures. | 1991 | 24258914 |