Mejda Daami- Remadi
Tunisia
Research Article
Soil-borne and Compost-borne Aspergillus Species for Biologically
Controlling Post-harvest Diseases of Potatoes Incited by Fusarium
sambucinum and Phytophthora erythroseptica
Author(s): Rania Aydi Ben Abdallah, Hayfa Jabnoun- Khiareddine, Boutheina Mejdoub- Trabelsi and Mejda Daami- Remadi
Rania Aydi Ben Abdallah, Hayfa Jabnoun- Khiareddine, Boutheina Mejdoub- Trabelsi and Mejda Daami- Remadi
Nine isolates of Aspergillus spp., isolated from soil and compost were tested in vitro and in vivo for their antifungal activity against Fusarium sambucinum and Phytophthora erythroseptica, the causal agents of the Fusarium dry rot and pink rot of potato tubers. Tested using the dual culture method, the pathogen growth of F. sambucinum and P. erythroseptica was inhibited by 27 to 68% and 16 to 25% by all Aspergillus species, respectively. The highest inhibitory activity against both pathogens was induced by the isolate CH12 of A. niger. A significant reduction of the mycelial growth of both pathogens tested using the inverse double culture method involves the presence of volatile antifungal metabolites. Their effectiveness was also evaluated as tuber treatment prior to inoculation with the pathogens. The highest effectiveness in reducing Fusarium dry rot severity was .. View More»
DOI:
10.4172/2157-7471.1000313