CHARACTERIZATION AND VARIABILITY OF SOFT ROT-CAUSING BACTERIA IN CHINESE CABBAGE IN NORTH EASTERN BRAZIL

Yield of Chinese cabbage (Brassica pekinensis) may be limited by the occurrence of the soft rot caused by pectinolytic bacteria. Thirty-nine bacterial isolates associated with soft rot in Chinese cabbage, obtained from northeastern Brazil, were identified as Pectobacterium carotovorum subsp. carotov...

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Bibliographic Details
Published in:Journal of plant pathology 2011-03, Vol.93 (1), p.173-181
Main Authors: Alvarado, I.C.M., Michereff, S.J., Mariano, R.L.R., Souza, E.B., Quezado-Duval, A.M., Resende, L.V., Cardoso, E., Mizubuti, E.S.G.
Format: Article
Language:English
Subjects:
Antibiotics
Bacteria
Cabbages
Epidemiology
Genetic variation
Microbiology
Pectobacterium carotovorum
Phytopathology
Plant diseases
Plants
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Summary:Yield of Chinese cabbage (Brassica pekinensis) may be limited by the occurrence of the soft rot caused by pectinolytic bacteria. Thirty-nine bacterial isolates associated with soft rot in Chinese cabbage, obtained from northeastern Brazil, were identified as Pectobacterium carotovorum subsp. carotovorum (Pcc) based on biochemical tests and URP-PCR. The variability of all isolates was assessed with reference to disease components, i.e. incubation period (IP), initial severity (ISEV), final severity (FSEV) and area under the disease progress curve (AUDPC), sensitivity to 12 antibiotics and the banding pattern of REP, ERIC and BOX in Rep-PCR. Based on IP, ISEV, FSEV and AUDPC, the isolates were distributed in six similarity groups after cluster analysis. There was significant correlation (P
ISSN:1125-4653
2239-7264