Kr. Everett et al., SAP-TRANSMISSIBLE VIRUSES IN FLOWERING CHERRY IN NEW-ZEALAND, New Zealand journal of crop and horticultural science, 21(4), 1993, pp. 311-316
Six sap-transmitted viruses were identified during a study of 434 flow
ering cherries in the North Island of New Zealand. These included Prun
us necrotic ringspot ilarvirus (PNRSV), apple mosaic ilarvirus (ApMV),
flowering cherry virus B (FCVB), strawberry latent ringspot virus (SL
RV), prune dwarf ilarvirus (PDV), and flowering cherry virus I (FCVI).
Of these, ApMV, FCVB, SLRV, and FCVI were new records for this host.
FCVB and FCVI appear to be newly described viruses with characteristic
s of members of the bromovirus and ilarvirus groups respectively. The
most common virus was PNRSV (30.6%); the other viruses ranged in incid
ence from 10.2% (FCVB) to 0.5% (PDV). A further 43 virus isolates were
categorised into nine classes based on symptoms in Chenopodium quinoa
and cucumber, and were not further characterised in this study. Repea
ted sampling of 30 flowering cherry trees during late winter and early
spring showed that the enzyme-linked immunosorbent assay (ELISA) was
more sensitive for detecting PNRSV infection of flowering cherries tha
n sap transmission, but that neither method was absolutely reliable.