The susceptibility of the monarch butterfly (Danaus plexippus) larvae to the neogregarine parasite, Ophryocystis elektroscirrha, was tested in the laboratory. Spore loads recovered from infected monarch butterflies were directly related to the inoculum level, larval stage of the host, and spore age. There was a linear relationship between spores ingested by first instar larvae and spore concent...

The study of mould spores is of major importance as many fungi can cause considerable economic losses worldwide acting as plant pathogens or triggering respiratory diseases and allergenic processes in humans. Knowledge of spore production relationships to different altitudes or weather patterns can be applied in a more efficient and reliable use of pesticides or improving diagnosis and treatmen...

The objectives of this study were to evaluate the prevalence of Bacillus cereus spores in vegetables and to investigate the toxigenic characteristics of spore isolates. The detection rate of spores was 26.7% (12 out of 45 samples) which possess a higher risk of food poisoning than vegetative cell. The occurrence rate of toxin genes in spore isolates were 91.7, 100 and 100% for hblCDA, nheABC an...

BACKGROUND Photocatalysis of titanium dioxide (TiO(2)) substrates is primarily induced by ultraviolet light irradiation. Anion-doped TiO(2) substrates were shown to exhibit photocatalytic activities under visible-light illumination, relative environmentally-friendly materials. Their anti-spore activity against Bacillus anthracis, however, remains to be investigated. We evaluated these visible-l...

Occurrence and abundance of arbuscular mycorrhizal fungi in the agricultural fields in and around Mysore district was studied. Almost all the sampling sites belong to semi-arid region. Most of the crops growing in this region were sampled. AMF percent colonization and spore density and species richness was assessed. Soil samples exhibit varied physico-chemical parameters which correlates with A...

The concentration of airborne Didymella spores has been investigated at two monitoring sites situated along the west-south transect in Poland (Szczecin, Kraków), i.e. from a height of 100 to 219 m, respectively, above sea level. The aerobiological monitoring of fungal spores was performed by means of two Lanzoni volumetric spore traps. The high Didymella spore numbers were observed at both citi...

Takahashi, I. (McMaster University, Hamilton, Ontario, Canada). Localization of spore markers on the chromosome of Bacillus subtilis. J. Bacteriol. 89:1065-1067. 1965.-Attempts were made to locate spore markers on the chromosome by determining the mapping distance of ery(r), str(r), phe, tyr, and ser markers to which the spore markers are closely linked. The results obtained indicated that locu...

Spore formers are bacteria able to survive harsh environmental conditions by differentiating a specialized, highly resistant spore. In Bacillus subtilis, the model system for spore formers, the recently discovered crust and the proteinaceous coat are the external layers that surround the spore and contribute to its survival. The coat is formed by about seventy different proteins assembled and o...