| 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 |
| incidence of the beet leafhopper-transmitted virescence agent phytoplasma in local populations of the beet leafhopper, circulifer tenellus, in washington state. | phytoplasma diseases are increasingly becoming important in vegetable crops in the pacific northwest. recently, growers in the columbia basin and yakima valley experienced serious outbreaks of potato purple top disease that caused significant yield loss and a reduction in tuber processing quality. it was determined that the beet leafhopper-transmitted virescence agent (bltva) phytoplasma was the causal agent of the disease in the area and that this pathogen was transmitted by the beet leafhopper ... | 2010 | 20578882 |