Characterization of Iranian Pectobacterium carotovorum Strains from Sugar Beet by Phenotypic Tests and Whole-cell Proteins Profile
2008
Fassihiani, A. | Nedaeinia, R.
Thirty isolates of Pectobacterium carotovorum from soft rot-affected sugar beet plants in the Fars province of Iran were characterized phenotypically and by analysis of whole-cell protein electrophoresis patterns. The isolates were found to be heterogeneous based on the results of physiological and biochemical tests and protein profiles. The results of numerical analysis of phenotypic characteristics and protein patterns showed that only 27% of the collected isolates (phenon 4) could be identified as P. betavasculorum when compared with reference strains. Strains of the first, second, third and fifth phenon shared similar characters with those of P. carotovorum subsp. carotovorum, P. betavasculorum and P. carotovorum subsp. odoriferum, but were distinct from these subspecies. Inoculation of phenon 4 isolates into wounded sugar beet petioles led to black streaking, root rot and vascular necrosis. Other isolates were incapable of causing systemic symptoms in inoculated plants.
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