We investigated the diversity of the Penicillium brevicompactum Dierckx group in dust from 54 houses in Wallaceburg, Ontario, Canada. Two taxa were predominant, P. brevicompactum and Pencillium bialowiezense Zaleski, accounting for 88.6% and 5.4% of the sample set, respectively. We further characterized multilocus haplotypes of isolates by characterizing three polymorphic genetic loci, b-tubuli...

Penicillium brevicompactum and other isolates with the compact, complex conidiogenous apparatus typical of the species were sequenced in one ribosomal and two protein coding regions. The aligned DNA sequences were analyzed by maximum parsimony and the data from different loci were tested for compatibility using the partition homogeneity test. Analysis of each of the three loci revealed three cl...

Trichoderma species are among important antagonists of plant pathogenic fungi. The main purpose of this study was to evaluate the biocontrol potential of native Trichoderma spp. isolates from sugar beet fields against Phytophthora drechsleri and P. cryptogea, the causal agents of Phytophthora root rot of sugar beet. During 2007–08, 85 isolates of Trichoderma spp. from sugar beet fields in eight...

In cultures of Penicillium brevicompactum grown on Czapek-Dox agar or on circles of dialysis membrane placed on Czapek-Dox agar, brevianamides A and B first appeared after conidiation had begun. The presence of these brevianamides imparted a yellow-green fluorescence to the penicilli and to the upper section of the conidiophores of actively conidiating cultures. Experiments with replacement cul...

trichoderma species are among important antagonists of plant pathogenic fungi. the main purpose of this study was to evaluate the biocontrol potential of native trichoderma spp. isolates from sugar beet fields against phytophthora drechsleri and p. cryptogea, the causal agents of phytophthora root rot of sugar beet. during 2007–08, 85 isolates of trichoderma spp. from sugar beet fields in eight...

the effect of different isolates of trichoderma namely t. virens t65, t virens t90, t. virens t96, t. virens t122, t. brevicompactum t146, t. koningiopsis t149, t. viridecense t150, t. koningii as well as two trichodermin b and subtilin commercial bioproducts on growth promotion in wheat were studied through seed coating method in a compeletly randomized design in a glasshouse experiment. the i...