Infectivity and Transmission of Fungal Viruses

Lecoq, Hervé; Boissonnet-Menès, M.; Delhotal, P.

doi:10.1007/978-3-642-67373-3_4

Cited by 9 publications

(7 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Viruses within a group were related serologically to other members of the same group, but unrelated serologically to members of other groups. Double-stranded RNA mycoviruses do not have an extracellular phase in their replication cycle and there is no evidence for transmission of viruses between individuals in a population other than by vegetative (somatic) hyphal fusion or by mating (Lecoq et al, 1979). In G. graminis, virus particles are usually eliminated in the sexual cycle (Rawlinson et al, 1973;McFadden et al, 1983) and transmission via hyphal fusion may be the main method by which viruses spread.…”

Section: Introductionmentioning

confidence: 99%

Sequence Relationships between Virus Double-stranded RNA from Isolates of Gaeumannomyces graminis in Different Vegetative Compatibility Groups

Jamil¹,

Buck²,

Carlile³

1984

Journal of General Virology

View full text Add to dashboard Cite

SUMMARYDouble-stranded RNA, from isolates of Gaeumannomyces graminis var. tritici in nine vegetative compatibility groups, was separated by polyacrylamide gel electrophoresis and transferred to aminophenylthioether-paper. Hybridization between these blots and cDNA probes prepared to double-stranded RNA from viruses obtained from three of the isolates, revealed several close relationships between double-stranded RNA from isolates in different vegetative compatibility groups. The implications of this finding for virus transmission in G. graminis are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Sequence Relationships between Virus Double-stranded RNA from Isolates of Gaeumannomyces graminis in Different Vegetative Compatibility Groups

Jamil¹,

Buck²,

Carlile³

1984

Journal of General Virology

View full text Add to dashboard Cite

show abstract

“…The inclusion of viruses in conidiospores has been reported for many sexual and asexual filamentous ascomycetes (Lecoq, et al, 1979). It is probably the result of the extensive contact between conidiospores and mycelium before their detachment.…”

Section: Discussionmentioning

confidence: 89%

“…Mycoviruses cannot exist outside their hosts (Lecoq et al, 1979 ;Buck, 1986). Therefore the transmission rate of the virus is directly proportional to the fitness of the host.…”

Section: Discussionmentioning

confidence: 99%

“…Vertical virus transmission is between generations, from parent to progeny. The evidence to date is that mycoviruses are transmitted vertically through conidiospores (Lecoq et al, 1979) but only rarely through ascospores (Rawlinson et al, 1973 ;Day et al, 1977 ;Rogers et al, 1986). Horizontal transmission is between related or unrelated individuals of the same generation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Factors affecting the spread of double-stranded RNA viruses in Aspergillus nidulans

Coenen¹,

Kevei²,

Hoekstra³

1997

Genet. Res.

View full text Add to dashboard Cite

SummaryViruses are common in asexual Aspergilli but not in sexual Aspergilli. We found no viruses in 112 isolates of the sexual Aspergillus nidulans. We have investigated factors that could play a role in preventing the spread of mycoviruses through populations of A. nidulans. Experiments were performed with A. nidulans strains infected with viruses originating from A. niger. Horizontal virus transmission was restricted but not prevented by somatic incompatibility. Viruses were transmitted vertically via conidiospores but not via ascospores. Competition experiments revealed no effect of virus infection on host fitness. Outcrossing was found to limit the spread of viruses significantly more than selfing. It is concluded that the exclusion of viruses from sexual Aspergilli could be due to the formation of new somatic incompatibility groups by sexual recombination.

show abstract

“…In ascomycetes, the general pattern that initially emerged was that viruses are transmitted through asexual spores (conidia) but not sexual spores (ascospores) (Lecoq et al, 1979). However, transmission can be quite variable, and exceptions to this rule have emerged.…”

Section: Vertical Transmissionmentioning

confidence: 99%