Скрининг штаммов грибов Trichoderma pers. для защиты растений от Albifimbria verrucaria, ранее известного как Myrothecium verrucaria

Abstract

The phytopathogen Albifimbria verrucaria (Myrothecium) produces macrocyclic trichothecene mycotoxins. When developed on animal feed, it can cause poisoning. The research aims to select strains of Trichoderma fungi that are promising for plant protection against the pathogen Alb. verrucaria. The antagonistic activity of 21 Trichoderma cultures against Alb. verrucaria was studied using the double-culture method. On day 10, three isolates of Trichoderma sp. 3K, 7T and 12T inhibited the pathogen by 67-71%. Furthermore, in seven variants of the double cultures, inhibition of Trichoderma fungi by the pathogen with the formation of sterile zones with a radius of 2-10 mm was observed. By day 15 of double-culture incubation, pathogen accretion was noted on some Trichoderma cultures, including 3K and 12T. As a result of the microscopy of crop connection zones and growth zones, three isolates, namely 1K, 4T and 13N, were noted as promising for plant protection against Alb. verrucaria.