cage birds like canaries can potentially harbor human pathogens and contribute to transmission and spread of drug resistant infectious agents to human. considering many people's interests to keep canaries, present study was conducted in canaries from yazd to investigate the beta-lactam antibiotics resistant escherichia coli. 109 e. coli isolates from canary faeces in yazd were evaluated to...

In a wild plant-pathogen system, host resistance and pathogen virulence varied markedly among local populations. Broadly virulent pathogens occurred more frequently in highly resistant host populations, whereas avirulent pathogens dominated susceptible populations. Experimental inoculations indicated a negative trade-off between spore production and virulence. The nonrandom spatial distribution...

four sugar beet genotypes with different reactions to root rot pathogens were evaluated for resistance to important root rot agents including pythium aphanidermatum, phytophthora drechsleri, rhizoctonia solani ag-2-2 and r. solani ag-4. inoculums for pythium and phytophthora were 3-5 day actively growing colony of the pathogens on cma medium, while for rhizoctonia isolates were nine infected co...

Thailand is the leading producer and exporter of durians worldwide. Serious diseases in include root rot, stem fruit which are caused by Phytophthora palmivora, P. nicotianae, Pythium cucurbitacearum, respectively. Thai farmers have applied fungicides for more than 20 years to control but it remains difficult control. Thus, monitoring fungicide-resistance development pathogens important disease...