Isolation and characterization of antagonistic fungi against potato scab pathogens from potato field soils

FEMS Microbiology Letters
Masahiro TagawaYoichi Kamagata

Abstract

Potato scab is a serious plant disease caused by several Streptomyces sp., and effective control methods remain unavailable. Although antagonistic bacteria and phages against potato scab pathogens have been reported, to the best of our knowledge, there is no information about fungi that are antagonistic to the pathogens. The aim of this study was to isolate fungal antagonists, characterize their phylogenetic positions, determine their antagonistic activities against potato scab pathogens, and highlight their potential use as control agents under lower pH conditions. Fifteen fungal stains isolated from potato field soils were found to have antagonistic activity against three well-known potato scab pathogens: Streptomyces scabiei, Streptomyces acidiscabiei, and Streptomyces turgidiscabiei. These 15 fungal strains were phylogenetically classified into at least six orders and nine genera based on 18S rRNA gene sequencing analysis. These fungal isolates were related to members of the genera Penicillium, Eupenicillium, Chaetomium, Fusarium, Cladosporium, Mortierella, Kionochaeta, Pseudogymnoascus, and Lecythophora. The antagonistic activities of most of the fungal isolates were highly strengthened under the lower pH conditions, sugge...Continue Reading

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Citations

Mar 11, 2015·Canadian Journal of Microbiology·Pingping SunQing Ma
Feb 5, 2019·FEMS Microbiology Ecology·Carla Cruz-ParedesIver Jakobsen
Jun 8, 2021·Frontiers in Microbiology·Chuntao YinChristina H Hagerty
Jun 29, 2021·Frontiers in Microbiology·Ting ShiDa-Yong Shi

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