| antibiotic activity of the pyrenocines. | pyrenocine a, a phytotoxin produced by pyrenochaeta terrestris (hansen) gorenz, walker and larson, possesses general antibiotic activity against plants, fungi, and bacteria. effective doses for 50% inhibition (ed50s) are 4 micrograms/ml for onion seedling elongation; 14, 20, 20, and 25 micrograms/ml for the germination of asexual spores of fusarium oxysporum f. sp. cepae, fusarium solani f. sp. pisi, mucor hiemalis, and rhizopus stolonifer, respectively. pyrenocine a also inhibits the linear myc ... | 1987 | 3594310 |
| the influence of environmental factors on growth and interactions between embellisia allii and fusarium oxysporum f. sp. cepae isolated from garlic. | embellisia allii results in the formation of a bulb canker and black soot on the surface of different alliums and it has been frequently detected on garlic bulbs together with the spoilage fungus, fusarium oxysporum f. sp. cepae, which causes bulb basal plate rot. in this study, the influence of water activity (a(w)) and temperature on mycelial growth of e. allii and f. oxysporum f. sp. cepae, conidial size and sporulation of e. allii, interactions between e. allii and f. oxysporum f. sp. cepae, ... | 2010 | 20153538 |
| indicator organisms for assessing sanitization during composting of plant wastes. | the potential for using plant pathogens and seeds as indicator organisms for assessing sanitization of plant wastes during composting was tested in bench-scale flask and large-scale systems. plasmodiophora brassicae was unsuitable due to high temperature tolerance in dry to moist composts, and detection of viable inoculum post-composting using bioassay plants not corresponding with that using taqman® pcr, possibly due to preservation of nucleic acids at elevated temperatures. several other plant ... | 2011 | 21546235 |
| molecular identification of two vegetative compatibility groups of fusarium oxysporum f. sp. cepae. | fusarium oxysporum f. sp. cepae (focep), which causes basal rot of onions, consists of seven vegetative compatibility groups (vcgs 0420 to 0426) and several single-member vcgs (smvs). focep populations in south africa and colorado each comprise one main vcg, namely vcg 0425 and 0421, respectively. the aim of this study was to develop sequence-characterized amplified region (scar) markers for the identification of vcgs 0425 and 0421, using 79 previously characterized f. oxysporum isolates. a seco ... | 2011 | 21970568 |