| virus-like particles and a spider mite intimately associated with a new disease of barley. | the malting barley-producing regions in montana and canada are threatened with a new virus-like barley disease that appears to be etiologically novel. ultrathin sections of diseased tissue contained enveloped, filamentous virus-like particles that measured 64 nanometers by 126 to 4000 nanometers. these lengths are unique for plant viruses. unexpectedly, the spider mite,petrobia latens, which has never been reported to be a vector of a pathogen, was found to transmit the causal agent from disease ... | 1988 | 17835277 |