Phytotoxic Strains of <i>Fusarium commune</i> Isolated from Truffles
2024
Anton Zvonarev | Vasily Terentyev | Valentina Zhelifonova | Tatiana Antipova | Boris Baskunov | Aleksander Avtukh | Tatiana Abashina | Aleksey Kachalkin | Mikhail Vainshtein | Anna Kudryavtseva
Most <i>Fusarium</i> species are known as endophytes and/or phytopathogens of higher plants and have a worldwide distribution. Recently, information discovered with molecular tools has been also published about the presence of these fungi in the microbiome of truffle fruiting bodies. In the present work, we isolated and identified three <i>Fusarium</i> strains from truffle fruiting bodies. All isolates were assigned to the same species, <i>F. commune</i>, and the strains were deposited in the All-Russian Collection of Microorganisms under accession numbers VKM F-5020, VKM F-5021, and VKM F-5022. To check the possible effects of the isolated strains on the plants, the isolates were used to infect sterile seedlings of Sarepta mustard (<i>Brassica juncea</i> L.). This model infection led to a moderate suppression of the photosynthetic apparatus activity and plant growth. Here, we present characteristics of the <i>F. commune</i> isolates: description of the conidial morphology, pigmentation, and composition of the mycelium fatty acids. Overall, this is the first description of the <i>Fusarium</i> cultures isolated from truffle fruiting bodies. Possible symbiosis of the <i>F. commune</i> strains with truffles and their involvement in the cooperative fatty acid production are proposed.
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