RT info:eu-repo/semantics/article T1 Vertical transmission of Fusarium circinatum mitoviruses FcMV1 and FcMV2-2 via microconidia A1 Romeralo Tapia, Carmen A1 Bezos García, Diana A1 Martínez Álvarez, Pablo A1 Díez Casero, Julio Javier K1 Pine pitch canker disease K1 Chancro resinoso del pino K1 Hypovirulence K1 Hipovirulencia K1 Microconidia K1 Microconidias K1 Biological control K1 Control biológico K1 3106 Ciencia Forestal AB Pine Pitch Canker disease, caused by the pathogenic fungus Fusarium circinatum, affectsconifer species worldwide. However, the virulence of the pathogen may be affected by the presenceof mycoviruses. The aim of this laboratory-based study was to investigate the probability and rateof transmission of F. circinatum mitoviruses FcMV1 and FcMV2-2 via microconidia. Ten isolates ofmitovirus-infected F. circinatum were subcultured to produce a total of 100 single-spore colonies(ten replicates per isolate). The total RNA and cDNA obtained from each spore isolate (monosporicculture) were amplified by PCR with specific primers for detection of F. circinatum mitoviruses FcMV1and FcMV2-2. The mitoviruses were detected in a high percentage of the individual spore isolates(between 60% and 100% depending on the fungal isolate). However, the probability of transmissionwas not statistically significantly associated with either the F. circinatum isolate or the viral strain.A high proportion of transmission via microconidia is critical for development of a biological controlprogram against Pine Pitch Canker (PPC) disease in forests. However, further studies are needed toestablish the effect of these mitoviruses on the virulence of F. circinatum. PB MDPI SN 1999-4907 YR 2018 FD 2018 LK http://uvadoc.uva.es/handle/10324/40819 UL http://uvadoc.uva.es/handle/10324/40819 LA eng NO Forests, 2018, vol. 9, n. 6. 10 p. NO Producción Científica DS UVaDOC RD 06-jun-2024