An antibiotic- and siderophore-producing Pseudomonas strain isolated from virgin soils (with forest trees) displayed in vitro antibiosis against many plant pathogenic fungi. The presence of iron had no effect on this in vitro antibiosis. Seed bacterization improved germination, shoot height, root length, fresh and dry mass, enhanced yield and chlorophyll content of leaves in the five test crop plants under field conditions. Seed bacterization also reduced the number of infected brinjal plants grown in soil infested with Rhizoctonia solani. The strain produced a yellowish green siderophore in the standard succinate medium and both siderophore and a yellow viscous antibiotic compound in King's B medium. The results confirmed that the plant growth promotion was due to siderophore production whereas the disease suppression was due to the antibiotic substance.

• MeSH
• antibakteriální látky biosyntéza   MeSH
• antibióza * MeSH
• biologická kontrola škůdců MeSH
• Brassica mikrobiologie   MeSH
• fluorescence MeSH
• kořeny rostlin mikrobiologie   MeSH
• nemoci rostlin * mikrobiologie   MeSH
• Pseudomonas fyziologie   MeSH
• půdní mikrobiologie MeSH
• Rhizoctonia účinky léků   MeSH
• siderofory biosyntéza   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antibakteriální látky MeSH
• siderofory MeSH

The production of beta-1,3-glucanases and chitinases by three strains of Trichoderma in submerged cultures was determined. The synthesis of enzymes was induced by cell wall biopolymers of phytopathogenic fungi (Botrytis cinerea, Fusarium culmorum and F. oxysporum). T. hamatum produced the highest beta-1,3-glucanase activity; the most effective inducer of enzyme synthesis was the biomass of F. oxysporum. All examined strains of Trichoderma inhibited phytopathogen growth in biotic tests. The diffusion tests showed that the lytic enzymes take part in growth inhibition of phytopathogenic fungi.

• MeSH
• beta-glukosidasa farmakologie   fyziologie   MeSH
• Botrytis účinky léků   MeSH
• chitinasy farmakologie   MeSH
• Fusarium účinky léků   MeSH
• glukan-1,3-beta-glukosidasa MeSH
• mikrobiální testy citlivosti MeSH
• nemoci rostlin mikrobiologie   MeSH
• substrátová specifita MeSH
• Trichoderma enzymologie   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• beta-glukosidasa MeSH
• chitinasy MeSH
• glukan-1,3-beta-glukosidasa MeSH

Unexpected pathogens from the environment represent considerable risk for humans with impaired health. We examined the occurrence of itraconazole tolerant micromycetes in soil and in maize products. Five concentrations of itraconazole (2.5-12.5 micrograms/mL) selected according to known treatment schedules for human patients were incorporated into Sabouraud agar with chloramphenicol and Rose Bengal and diluted samples were inoculated onto the agar surface. After 7-d growth at 22 degrees C colonies of Alternaria sp., Aspergillus clavatus, A. glaucus group, A. flavus, A. fumigatus, A. niger group, A. ochraceus group, A. ochraceus, Chaetomium sp., Cladosporium cladosporioides, Cylindrocarpon sp., Doratomyces sp., Fusarium sp., F. moniliforme, F. oxysporum, F. solani, F. subglutinans, Marianaea elegans, Mortierella sp., Mucor sp., Myrothecium sp., Penicillium sp., Rhizopus sp., Scopulariopsis brevicaulis, Sepedonium sp., Stachybotrys chartarum, Stemphylium sp., Torula humicola and Trichoderma viride were isolated.

• MeSH
• antibiotická rezistence MeSH
• antifungální látky farmakologie   MeSH
• houby účinky léků   izolace a purifikace   patogenita   MeSH
• itrakonazol farmakologie   MeSH
• kukuřice setá mikrobiologie   MeSH
• lidé MeSH
• mikrobiální testy citlivosti MeSH
• mykózy farmakoterapie   mikrobiologie   MeSH
• oportunní infekce farmakoterapie   mikrobiologie   MeSH
• potravinářská mikrobiologie * MeSH
• půdní mikrobiologie * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antifungální látky MeSH
• itrakonazol MeSH