| field ecology of spiroplasma citri in western north america. | spiroplasma citri naturally infects plants representing several dicotyledonous families in the southwestern u.s., where it is commonly found in old world brassicaceous weeds and cole crop plants as well as in citrus. of its leafhopper vectors, it is most frequently found in circulifer tenellus (baker). it is rarely found in field-collected scaphytopius nitridus (delong), one of two species of scaphytopius capable of transmission from plants in the laboratory. spiroplasmas presumed to be s. citri ... | 1984 | 6392182 |
| genetic diversity of spiroplasma citri strains from different regions, hosts, and isolation dates. | spiroplasma citri, a phloem-limited pathogen, causes citrus stubborn disease (csd). losses due to csd in california orchards have grown over the past decade. to investigate the possibility of introduction or emergence of a new strain, a study of genetic diversity among s. citri strains from various locations was conducted using random amplified polymorphism dna-polymerase chain reaction (rapd-pcr) of 35 strains cultured from 1980 to 1993, and of 35 strains cultured from 2005 to 2006. analysis us ... | 2008 | 18943733 |