Journal
JOURNAL OF BASIC MICROBIOLOGY
Volume 47, Issue 1, Pages 40-49Publisher
WILEY
DOI: 10.1002/jobm.200610199
Keywords
bacterial wilt; biovar; characteristics; Ethiopia; Ralstonia solanacearum
Categories
Ask authors/readers for more resources
Eighty one isolates of Ralstonia solanacearum-like bacteria on triphenyl tetrazolium chloride (TTC) medium were collected from different Solanaceae crops (i.e. potato, tomato and pepper plants and potato tubers) at various sites in Ethiopia. Of these, 62 strains were identified as R. solanacearum based on their cultural characteristics on TTC medium, tomato pathogenicity bioassay, carbon source utilisation patterns and a specific PCR-based assay. By Hayward's classification method, based on carbon source utilisation, 19 of the 62 R. solanacearum strains were identified as biovar I and 43 strains were identified as biovar II. The biovar I strains exhibited a high growth rate at high temperatures (37 degrees C). Whereas the growth rate of biovar II strains was greatest at lower temperatures (22 degrees C). Biovar I strains had broader host range than biovar H strains, which were limited to potato, tomato, and eggplant. To our knowledge, this is the first report of R. solanacearum biovar I in Ethiopia. The existence of biovar I strains in Ethiopia raises concerns because they have a broader host range than biovar II strains.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available