biological control of plant pathogens with the aim of reducing the harmful effects of pesticides on human health threats, environmental pollution, eliminating non-target organisms and the emergence of resistant pathogens is a priority. in this regard, the use of antimicrobial potential of plant metabolites, have been discussed in recent years. in this study the effects of ethanol extract of wat...

We report on the elucidation of two separate pathways of spore germination in a plant pathogenic fungus Colletotrichum gloeosporioides f. sp. aeschynomene. Conidia of the fungus can germinate either from one side or from both sides, depending on external conditions. In shake culture that includes an extract made up from fresh peas, the unicellular conidium divides and one of the two cells devel...

1. Antisera, prepared against extracts of cells and spores of Bacillus subtilis, were used in immunoelectrophoretic studies of the changes occurring in cell extracts during the course of spore formation. 2. At least 15 antigens could be detected in vegetative-cell extracts by the antiserum prepared against cell extracts and at least seven could be demonstrated in spore extracts by the homologou...

Stachybotry chartarum, a fungal contaminant of water-damaged buildings commonly grows on damp cellulose-containing materials. It produces a complex array of mycotoxins. Their mechanisms of action on the pulmonary system are not entirely clear. Previous studies suggest spore products may depress formation of disaturated phosphatidylcholine (DSPC), the major surface-active component of pulmonary ...

An optimized strategy for the enhancement of microbially induced calcium precipitation including spore viability ensurance, nutrient selection and O2 supply was developed. Firstly, an optimal yeast extract concentration of 5 g/l in sporulation medium was determined based on viable spore yield and spore viability. Furthermore, the effects of certain influential factors on microbial calcium preci...

1 Saikai T, Tanaka H, Fuji M, et al. Hypersensitivity pneumonitis induced by the spore of Pleurotus eryngii (Eringi). Intern Med 2002; 41:571–573 2 Tanaka H, Saikai T, Sugawara H, et al. Three-year follow-up study of allergy in workers in a mushroom factory. Respir Med 2001; 95:943–948 3 Saikai T, Tanaka H, Matsuura A, et al. Cellular compartment of peripheral mononuclear cells and in vivo resp...

The crystalline inclusion of Bacillus thuringiensis, dissolved in 8 m urea containing 10% 2-mercaptoethanol and dialyzed to pH 8.3 to 8.5, was compared with a fraction obtained by the same extraction procedure from spores broken by dry rupture. The two fractions behaved similarly on chromatography with Sephadex G-100 and diethylaminoethyl cellulose. The preparations behaved identically on acryl...

The germination of Bacillus cereus T spore suspensions is partially prevented by several inhibitors of trypsin-like enzymes. Leupeptin, antipain, and tosyl-lysine-chloromethyl ketone are effective inhibitors, whereas chymostatin, elastatinal, and pepstatin are inactive. A synthetic substrate of trypsin, tosyl-arginine-methyl ester, also inhibits germination. Its inhibitory effect decreases as a...

In this study, we optimized the fermentation medium for spore production of Paenibacillus polymyxa IN937a. Seven factors including molasses, glucose, magnesium sulfate, potassium pyrophosphate, yeast extract, zinc and ammonium sulfate are selected as basis screening affecting P. IN937a by Plackett-Burman experiment. Based on analysis matrix, result showed that were three main impact (P < 0.0...