Penicillium expansum, a widespread filamentous fungus, is a major causative agent of fruit decay and may lead to the production of mycotoxin that causes harmful effects on human health. In this study, we compared the cellular and extracellular proteomes of P. expansum in the absence and presence of borate, which affects the virulence of the fungal pathogen. The differentially expressed proteins...

The fungistatic effects of controlled atmospheres composed of increased CO(2) and decreased O(2) was studied in a manner such that the condition of stored fruit was not a factor in the growth of the fungi. Varying concentrations of O(2) and CO(2) were used. The fungi used were Botrytis alli, Rhizopus nigricans, and Penicillium expansum. The results showed that controlled atmospheres, within the...

Aureobasidium pullulans strain Ach1-1 was recently isolated for its biocontrol effectiveness against Penicillium expansum, the causal agent of blue mold on harvested apples. In the present study, strain Ach1-1 was found to be very effective in controlling P. expansum on apple wounds. For in vitro tests, strain Ach1-1 and P. expansum were cocultured in the presence of apple juice (0 - 5%) using ...

Epiphytic micro-organisms isolated from fruits and leaves surfaces of apples from different orchards were screened for antagonistic activity against Penicillium expansum. From all micro-organisms tested the new strain CPA-5 of Pseudomonas syringae, isolated from organic orchard, was selected. This strain was very effective against Botrytis cinerea, P. expansum and Rhizopus stolonifer at various...

Spore germination is the first step for fungal pathogens to infect host plants. The pH value, as one of the most important environmental parameters, has critical influence on spore germination. In this study, effects of ambient pH on spore germination were determined by culturing spores of Penicillium expansum in medium with pH values at 2.0, 5.0 and 8.0, and involved mechanisms were further in...

Methanol extracts of whole body (Melampus ceylonicus), blood (Anadara rhombea) and hepatopancreas (Sepiella inermis) were screened for antifungal and cytotoxic activity. Blood of A. rhombea and hepatopancreas of S. inermis strongly inhibited Candida albicans, Mucor racemosus and Penicillium expansum. A. rhombea appear to exert strong cytotoxic activity against vertebrate erythrocytes. The bacte...

T H E parasexual cycle first demonstrated in Aspergillus nidulans ( PONTECORVO, ROPER, HEMMONS, MACDONALD and BUFTON 1953) has provided a means for genetic investigations in other species of filamentous fungi, particularly those lacking a perfect stage. In the genus Penicillium, the parasexual cycle has been demonstrated in P. chrysogenum (PONTECORVO and SERMONTI 1954) , P. expansum ( BARRON 19...

This study reports the presence of filamentous fungi (ff) in drinking water including biofilms. Ff are not studied sufficiently in drinking water. Ff were highest in winter and had an indirect relation with other microorganisms. Pathogenic fungi were not observed at the mesophilic temperatures used. Penicillium expansum and P. brevicompactum were observed which may affect biofilms by mycotoxin ...

BACKGROUND The genus Penicillium contains a large number of ubiquitous environmental taxa, of which some species are clinically important. Identification of Penicillium down to the species level is currently based on polyphasic criteria, including phenotypic features and genetic markers. Biodiversity of the genus Penicillium from Mazandaran and Tehran provinces has not been described. OBJECTI...