Evidence of multiplication of sowthistle yellow vein virus in an inefficient aphid vector, Macrosiphum euphorbiae

Microbe-vector Interactions in Vector-borne Diseases

“…Viruses may be unable to infect the salivary glands or may simply fail to propagate in the vector body, and it is difficult to distinguish between these possibilities. The presence of virus in various organs and its absence in the salivary glands have been reported for vertebrate viruses such as Western equine encephalitis virus (WEEV; Togaviridae) in Culex tarsalis and Bluetongue virus (Reoviridae) in Culicoides variipennis , and for plant viruses such as Wound tumor virus (Reoviridae) and Sowthistle yellow vein virus (Rhabdoviridae) in leafhoppers and aphids, respectively (Granados et al, 1967;Behncken, 1973). Cases in which viruses have been detected in the salivary glands but nevertheless failed to escape in the salivary ducts have also been reported.…”

An Introduction to the Evolutionary Ecology of Viruses

“…The distant phylogenetic relationship between arthropods and vertebrates makes obligate replication in both taxa a fascinating evolutionary feat, and yet even some plant viruses rely on replication within arthropod vectors. These include rhabdoviruses such as lettuce necrotic yellows virus (Stubbs and Grogan, 1963), sowthistle yellow vein virus (Behncken, 1973), and strawberry crinkle virus (Richardson et al, 1972), which all use aphid vectors.…”

Multiplication of Maize Rayado Fino Virus in the Leafhopper Vector <i>Dalbulus maidis</i>

“…To complete its cycle in an insect vector, a propagative virus must infect the salivary glands and be injected back into a plant [19]. Selective passage of the virus from the hemolymph through the outer membrane of the salivary gland [20,21], or inability of the virus to replicate or accumulate in the salivary glands [20,22,23], may block the trans mission cycle or account for the inefficient transmission of some viruses by insect vec tors. It is possible that restricted passage and failure of MRFV to multiply in the salivary glands of D. ma/ifo determine the inability of many insects to transmit MRFV and the in termittent and erratic pattern of transmission frequently observed in this leafhopper [10,18].…”