Mycoviruses from Aspergillus fungi involved in fermentation of dried bonito.

Autor: Buma S; Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan; College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan., Urayama SI; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan; Microbiology Research Center for Sustainability, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan., Suo R; College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan., Itoi S; College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan., Okada S; Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan., Ninomiya A; Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan. Electronic address: ninomiya-akihiro@g.ecc.u-tokyo.ac.jp.
Jazyk: angličtina
Zdroj: Virus research [Virus Res] 2024 Sep 27, pp. 199470. Date of Electronic Publication: 2024 Sep 27.
DOI: 10.1016/j.virusres.2024.199470
Abstrakt: Fungi are exploited for fermentation of foods such as cheese, Japanese sake, and soy sauce. However, the diversity of viruses that infect fungi involved in food fermentation is poorly understood. Fermented dried bonito ("katsuobushi") is one of the most important processed marine products in Japan. Fungi involved in katsuobushi fermentation are called katsuobushi molds, and Aspergillus spp. have been reported to be dominant on the surface of katsuobushi during fermentation. Because various mycoviruses have been found in members of the genus Aspergillus, we hypothesized that katsuobushi molds are also infected with mycoviruses. Here, we describe seven novel mycoviruses belonging to six families (Chrysoviridae, Fusariviridae, Mitoviridae, Partitiviridae, Polymycoviridae, and Pseudototiviridae) from isolated katsuobushi molds (Aspergillus chevalieri and A. sulphureus) detected by fragmented and primer-ligated double-stranded RNA sequencing. Aspergillus chevalieri fusarivirus 1 has a unique bi-segmented genome, whereas other known fusariviruses have a single genomic segment. Phenotypic comparison between the parental A. chevalieri strain infected with Aspergillus chevalieri polymycovirus 1 (AchPmV1) and isogenic AchPmV1-free isolates indicated that AchPmV1 inhibits the early growth of the host. This study reveals the diversity of mycoviruses that infect katsuobushi molds, and provides insight into the effect of mycoviruses on fungi involved in fermentation.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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