| independent origins of vectored plant pathogenic bacteria from arthropod-associated arsenophonus endosymbionts. | the genus arsenophonus (gammaproteobacteria) is comprised of intracellular symbiotic bacteria that are widespread across the arthropods. these bacteria can significantly influence the ecology and life history of their hosts. for instance, arsenophonus nasoniae causes an excess of females in the progeny of parasitoid wasps by selectively killing the male embryos. other arsenophonus bacteria have been suspected to protect insect hosts from parasitoid wasps or to expand the host plant range of phyt ... | 2011 | 21892672 |
| cloning of the spot gene of "candidatus phlomobacter fragariae" and development of a pcr-restriction fragment length polymorphism assay for detection of the bacterium in insects. | marginal chlorosis is a new disease of strawberry in which the uncultured phloem-restricted proteobacterium "candidatus phlomobacter fragariae" is involved. in order to identify the insect(s) vector(s) of this bacterium, homopteran insects have been captured. because a pcr test based on the 16s rrna gene (rdna) applied to these insects was unable to discriminate between "p. fragariae" and other insect-associated proteobacteria, isolation of "p. fragariae" genes other than 16s rdna was undertaken ... | 2000 | 10919809 |
| characterization of a gamma-3 proteobacteria responsible for the syndrome "basses richesses" of sugar beet transmitted by pentastiridius sp. (hemiptera, cixiidae). | abstract the disease syndrome "basses richesses" (sbr) has affected sugar beet crops in burgundy (france) since 1991. it mainly is associated with an uncultivable phloem-restricted bacterium-like organism (blo) called sbr blo. transmission tests showed that field-collected pentastiridius sp. (hemiptera, cixiidae) were able to transmit the sbr blo to sugar beet. in the present work, sequences of a 1,507-bp 16s ribosomal (r)dna fragment of sbr blo were amplified from dna extracts of sbr-affected f ... | 2007 | 18942939 |
| "candidatus phlomobacter fragariae" is the prevalent agent of marginal chlorosis of strawberry in french production fields and is transmitted by the planthopper cixius wagneri (china). | abstract marginal chlorosis has affected strawberry production in france for about 15 years. a phloem-restricted uncultured bacterium, "candidatus phlomobacter fragariae," is associated with the disease. a large-scale survey for marginal chlorosis in french strawberry production fields and nurseries by polymerase chain reaction amplification of "ca. p. fragariae" 16s rdna revealed that symptoms of marginal chlorosis were not always induced by "ca. p. fragariae" and that the stolbur phytoplasma c ... | 2003 | 18943049 |