Thangavel Selvaraj
College of Agriculture and Veterinary Sciences,
Ambo, P.O. Box 19
Ethiopia
Research Article
In vitro Evaluation of Actinobacteria against Tomato Bacterial Wilt (Ralstonia solanacearum EF Smith) in West Showa, Ethiopia
Author(s): Kassahun Sadessa Biratu, Thangavel Selvaraj and Tariku HundumaKassahun Sadessa Biratu, Thangavel Selvaraj and Tariku Hunduma
Ralstonia solanacearum EF Smith is one of the most important and widespread pathogenic bacterium that causes a wilt disease in vegetable crops including tomato (Lycopersicon esculentum Mill.) in West Showa, Ethiopia, mainly in the off-cropping season. In vitro study was conducted to screen indigenous actinobacteria for their antibacterial activity against tomato bacterial wilt pathogen, R. solanacearum. 210 soil samples were collected from three districts of West Showa Zone, Ethiopia. Of all soil samples, 86 morphologically distinct actinobacterial isolates were isolated. In the preliminary screening test, 52 isolates were selected showing inhibitory activity against the pathogen and further tested for their antibacterial activity under secondary screening test. In the secondary screening test, all the isolates appeared significantly different (P ≤ 0.05) in their inhibition against.. View More»
DOI:
10.4172/2157-7471.1000160