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 my-cotoxins. When developed on animal feed, it can cause poisoning. The research aims to select strains of Tricho-derma 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.

Keywords

• pathogenic fungi
• growth inhibition
• fungal antagonists
• double-culture
• strain