| biological role of nardonella endosymbiont in its weevil host. | weevils constitute the most species-rich animal group with over 60,000 described species, many of which possess specialized symbiotic organs and harbor bacterial endosymbionts. among the diverse microbial associates of weevils, nardonella spp. represent the most ancient and widespread endosymbiont lineage, having co-speciated with the host weevils for over 125 million years. thus far, however, no empirical work on the role of nardonella for weevil biology has been reported. here we investigated ... | 2010 | 20957033 |
| "candidatus curculioniphilus buchneri," a novel clade of bacterial endocellular symbionts from weevils of the genus curculio. | here we investigated the bacterial endosymbionts of weevils of the genus curculio. from all four species of curculio weevils examined, a novel group of bacterial gene sequences were consistently identified. molecular phylogenetic analyses demonstrated that the sequences formed a distinct clade in the gammaproteobacteria, which was not related to previously known groups of weevil endosymbionts such as nardonella spp. and sodalis-allied symbionts. in situ hybridization revealed that the bacterium ... | 2010 | 19880647 |
| long-term evolutionary stability of bacterial endosymbiosis in curculionoidea: additional evidence of symbiont replacement in the dryophthoridae family. | bacterial intracellular symbiosis (endosymbiosis) is well documented in the insect world where it is believed to play a crucial role in adaptation and evolution. however, although coleopteran insects are of huge ecological and economical interest, endosymbiont molecular analysis is limited to the dryophthoridae family. here, we have analyzed the intracellular symbiotic bacteria in 2 hylobius species belonging to the molytinae subfamily (curculionoidea superfamily) that exhibit different features ... | 2008 | 18310662 |
| endosymbiont phylogenesis in the dryophthoridae weevils: evidence for bacterial replacement. | intracellular symbiosis is widespread in the insect world where it plays an important role in evolution and adaptation. the weevil family dryophthoridae (curculionoidea) is of particular interest in intracellular symbiosis evolution with regard to the great economical and ecological features of these invasive insects, and the potential for comparative studies across a wide range of host plants and environments. here, we have analyzed the intracellular symbiotic bacteria of 19 dryophthoridae spec ... | 2004 | 14739242 |