Geographical distribution of biovars of Ralstonia solanacearum in Brazil

• Published in: Journal of the Faculty of Agriculture, Kyushu University Vol. 44; no. 1-2
• Main Authors: de Melo, M.S. (Kyushu Univ., Fukuoka (Japan). Faculty of Agriculture), Furuya, N, Iiyama, K, Khan, A.A, Matsuyama, N
• Format: Journal Article
• Language: English
• Published: 01.11.1999
• Subjects: BIOTIPOS; BIOTYPE; BIOTYPES; BRASIL; BRAZIL; BRESIL; CHROMATOGRAPHIE EN COUCHE MINCE; CROMATOGRAFIA DE CAPA FINA; DISTRIBUCION GEOGRAFICA; DISTRIBUTION GEOGRAPHIQUE; FLETRISSEMENT; GEOGRAPHICAL DISTRIBUTION; IDENTIFICACION; IDENTIFICATION; MARCHITEZ; PAPA; PATHOGENICITY; PATOGENICIDAD; POMME DE TERRE; POTATOES; POUVOIR PATHOGENE; PSEUDOMONAS SOLANACEARUM; THIN LAYER CHROMATOGRAPHY; TOMATE; TOMATOES; WILTS
• ISSN: 0023-6152
• DOI: 10.5109/24300

Fifty-seven bacterial wilt pathogens were isolated from infected tomato, eggplant, potato, cucumber, pepper, banana, Solanum gilo and eucalyptus plants collected at different regions in Brazil. They were identified as Ralstonia solanacearum by the routine identification tests and the TLC method. The isolates were divided into seven groups on the basis of pathogenicity tests to tomato, eggplant, potato and tobacco. Moreover, based on the results of cultural, physiological and biochemical tests, twenty-four isolates were grouped as biovar 1, seventeen as biovar 2 and sixteen as biovar 3. Biovar 1 isolates are common and widely distributed in Brazil. Biovar 2 isolates are predominant on potato and prevail in the central west, south-east and south areas. Biovar 3 isolates exist mainly in the northern and north-eastern parts of Brazil