Work

Occurrence of SDHI-fungicide-resistant strains of Mycovellosiella nattrassii isolates from eggplants in Osaka Prefecture, Japan

Year: 2026

Type: article

Abstract: In this study, we evaluated the efficacy of penthiopyrad, isopyrazam and pyraziflumid against Mycovellosiella nattrassii isolates. These isolates, collected from eggplants in Osaka Prefecture, Japan, in 2024, had previously shown reduced sensitivity to succinate dehydrogenase inhibitors (SDHI) in culture medium tests (Yasumatsuya et al., 2025). Three strains (N8, N9 and N10) were tested. N8 and N10 demonstrated low sensitivity to penthiopyrad, isopyrazam and pyraziflumid on culture medium, were resistant to these SDHI on plant body. N9, which was sensitive to pyraziflumid and resistant to penthiopyrad, isopyrazam on culture medium, was sensitive to pyraziflumid and resistant to penthiopyrad, isopyrazam on plant body.

Source: Annual Report of The Kansai Plant Protection Society

DOI: 10.4165/kapps.68.112

Author: Keiko Yasumatsuya

Institution: Research Institute of Environment, Agriculture and Fisheries, Osaka Prefecture

Language: English

Topic: Fungal Plant Pathogen Control

Subfield: Ecology, Evolution, Behavior and Systematics

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: diamond

OpenAlex ID: W7162957558

FWCI:

Cites: 1

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