Journal of Fungi

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Special Issue Information

Dear Colleagues,

Alternaria, Rhizoctonia, and Fusarium are very important phytopathogens causing devastating diseases on many important crops all over the world. Accurate species identification of plant pathogens will provide the theoretical basis for controlling diseases effectively. To date, the management of crop diseases caused by these three genera has mainly relied on the timely application of fungicides. However, the resistance of Alternaria, Rhizoctonia, and Fusarium to fungicides had been reported due to their long-term use. In addition, many biocontrol agents have been recorded for use to protect crops from infection by pathogens belonging to the three genera. Mycoviruses are viruses that replicate in fungi and are widespread in all major taxonomic groups of fungi, including Alternaria, Rhizoctonia, and Fusarium. Some mycoviruses are reported to confer hypovirulence or hypervirulence to their host fungi, and mycoviruses that confer hypovirulence are considered potential biological agents for controlling fungal diseases. This Special Issue plans to give an overview of the most recent advances in the field of Alternaria, Rhizoctonia, and Fusarium. This Special Issue aims to provide contributions on advances in the species identification, molecular mechanism of resistance, pathogenic mechanism, resistant mechanism of plants, mycoviruses, and biocontrol agents used to control diseases with regard to Alternaria, Rhizoctonia, and Fusarium.

Potential topics include but are not limited to species identification of Alternaria, Rhizoctonia, and Fusarium; molecular mechanism of resistance of Alternaria, Rhizoctonia, and Fusarium to fungicides; pathogenic mechanism of Alternaria, Rhizoctonia, and Fusarium; resistant mechanism of plants to Alternaria, Rhizoctonia, and Fusarium; mycoviruses associated with Alternaria, Rhizoctonia, and Fusarium; and biocontrol agents used to control diseases caused by Alternaria, Rhizoctonia, and Fusarium.

Prof. Dr. Xuehong Wu
Prof. Dr. Lihua Guo
Prof. Dr. Shimin Zuo
Guest Editors

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Related Special Issue

Published Papers (1 paper)

Research

14 pages, 4051 KiB

Open AccessArticle

A Novel Strain of Fusarium oxysporum Virus 1 Isolated from Fusarium oxysporum f. sp. niveum Strain X-GS16 Influences Phenotypes of F. oxysporum Strain HB-TS-YT-1_hyg

by Huihui Hua, Xinyi Zhang, Jie Xia and Xuehong Wu

J. Fungi 2024, 10(4), 252; https://doi.org/10.3390/jof10040252 - 27 Mar 2024

Viewed by 611

Abstract

A novel strain of Fusarium oxysporum virus 1 (FoV1) was identified from the Fusarium oxysporum f. sp. niveum strain X-GS16 and designated as Fusarium oxysporum virus 1-FON (FoV1-FON). The full genome of FoV1-FON is 2902 bp in length and contains two non-overlapping open reading frames (ORFs), ORF1 and ORF2, encoding a protein with an unknown function (containing a typical −1 slippery motif G_GAU_UUU at the 3′-end) and a putative RNA-dependent RNA polymerase (RdRp), respectively. BLASTx search against the National Center for the Biotechnology Information (NCBI) non-redundant database showed that FoV1-FON had the highest identity (97.46%) with FoV1. Phylogenetic analysis further confirmed that FoV1-FON clustered with FoV1 in the proposed genus Unirnavirus. FoV1-FON could vertically transmit via spores. Moreover, FoV1-FON was transmitted horizontally from the F. oxysporum f. sp. niveum strain X-GS16 to the F. oxysporum strain HB-TS-YT-1_hyg. This resulted in the acquisition of the F. oxysporum strain HB-TS-YT-1_hyg-V carrying FoV1-FON. No significant differences were observed in the sporulation and dry weight of mycelial biomass between HB-TS-YT-1_hyg and HB-TS-YT-1_hyg-V. FoV1-FON infection significantly increased the mycelial growth of HB-TS-YT-1_hyg, but decreased its virulence to potato tubers and sensitivity to difenoconazole, prochloraz, and pydiflumetofen. To our knowledge, this is the first report of hypovirulence and reduced sensitivity to difenoconazole, prochloraz, and pydiflumetofen in F. oxysporum due to FoV1-FON infection. Full article

(This article belongs to the Special Issue Fusarium, Alternaria and Rhizoctonia: A Spotlight on Fungal Pathogens, 2nd Edition)

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