| crystalline inclusions in colladonus montanus (van duzee), a vector of western x-disease virus. | | 1963 | 13929127 |
| the infection of leafhoppers by western x-disease .virus ii. fluctuation of virus concentration in the hemolymph after injection. | transmission curves obtained from colladonus montanus adults, subinoculated as nymphs with hemolymph from vectors previously injected with western x-disease virus (wxv), were used to construct a curve showing relative virus concentration in the hemolymph after injection. an increase in wxv titer of approximately 3 log units was demonstrated between the 3rd and 21st days after injection. this was followed by a 1.5 log unit decline by the 37th day after injection. transmission by the initially inj ... | 1966 | 18611478 |
| the infection of leafhoppers by western x-disease virus. i. frequency of transmission after injection or acquisition feeding. | western x-disease virus (wxv) was transmitted to healthy colladonus montanus van duzee by injection of hemolymph or clarified extracts from infected vectors. virus was first transmitted to healthy celery 11-14 days after the insects were injected with infectious hemolymph. the inoculativity of vectors injected with all inocula reached a peak, then declined rapidly. when tenfold dilutions of extract from infected vectors were injected, the position of the transmission curve for each dilution with ... | 1966 | 18611477 |
| association of beet leafhopper (hemiptera: cicadellidae) with a clover proliferation group phytoplasma in columbia basin of washington and oregon. | at least 16 taxa of cicadellids and delphacids were tested by polymerase chain reaction (pcr) for the presence of a phytoplasma in the clover proliferation group, designated 16srvi. nucleic acid extracts from individual insects or groups of 5-10 were tested using pcr primers designed from the dna sequence of 16s-23s rrna or ribosomal protein genes of the pathogen. the beet leafhopper, circulifer tenellus (baker), was most often associated with the phytoplasma, with approximately 16% of the insec ... | 2005 | 15889714 |
| in vitro studies of mycoplasma-like organisms. | we determined whether the western x mycoplasma (wxm) isolated from colladonus montanus could be maintained in vitro by ultrathin sections or by assay of infectivity. large spherical or small electron-dense bodies like those found in intact infected cells were observed in some media. infectivity of wxm can be maintained for 28 days in cultured salivary glands in a newly developed medium, and for 281 days (seven passages) in modified actc, for 231 days (eight passages) in modified pc, 107 days (on ... | 1983 | 6382828 |
| the effect of western x-disease on the oxygen consumption of its leafhopper vector, colladonus montanus. | | 1971 | 5092820 |