Characterization of Dickeya strains isolated from potato and river water samples in Finland.

摘要: Plant pathogenic enterobacteria in the genera Pectobacterium and Dickeya (formerly classified as Erwinia) were isolated from diseased potato stems tubers. The bacteria identified P. atrosepticum, carotovorum pathogens genus with PCR tests. Furthermore, strains river water samples throughout country. Phylogenetic analysis 16S-23S rDNA intergenic spacer sequences suggested that could be divided into three groups, two of which samples. 16S growth at 39°C one groups corresponds to D. dianthicola, a quarantine pathogen greenhouse cultivation ornamentals, while did not clearly resemble any previously characterised species. Field trials indicated dianthicola-like caused highest incidence rotting necrosis stems, but some also symptoms. results showed although atrosepticum is still major cause blackleg Finland, virulent commonly present stocks rivers. This first report suggesting Dickeya, originally known tropical warm climates, may diseases northern Europe.