In Vitro Antagonistic Activity of Entomopathogenic Fungi Against Phytophthora infestans

Authors : Işılay Akça, Şerife Acar, Zeliha Çağla Tarakçi, Ali Sevim

Pages : 96-102

Doi:10.30708/mantar.1333405

View : 156 | Download : 125

Publication Date : 2023-10-30

Article Type : Research Paper

Abstract :Potato downy mildew is a disease caused by a fungus called Phytophthora infestans (Mont.) de Bary, which is mainly seen in potatoes and tomatoes, but also in other culture and wild plants belonging to the Solanaceae family. This fungus is quite important both from an economic and historical point of view. In case of an epidemic, it can cause full crop deterioration or serious losses in potatoes. Although cultural and chemical control methods are generally used in the control of the disease, there is no specific biological control method in this regard. Entomopathogenic fungi (EPFs) are generally used as biological control agents in the control of insect pests. Recently, there are many studies showed that these fungi can live endophytically on various cultivated plants and provide beneficial properties to the plants they live with. In this study, it was aimed to determine the in vitro antagonistic activities of different entomopathogenic fungi previously isolated from potato fields and identified by molecular methods against P. infestans. Earlier work determined that these fungi had a lethal effect on Leptinotarsa decemlineata (Say, 1824). Antagonistic activity tests were performed according to the \"direct opposition method\" and percentage (%) activity values were calculated. As a result of the tests, the most effective isolates were found to be Beauveria sp. SK-14 (75.23%) and Metarhizium sp. SK-24 (76.23%). It is thought that the results obtained will contribute to the biocontrol of diseases and pests in potatoes.
Keywords : Entomopatojenik fungus, Patates mildiyösü, Antagonistik aktivite, Biyolojik mücadele