Query: NC_012751:409333 Candidatus Hamiltonella defensa 5AT (Acyrthosiphon pisum), complete
Lineage: Hamiltonella defensa; Hamiltonella; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria
General Information: Candidatus Hamiltonella defensa 5AT was isolated from the pea aphid Acyrthosiphon pisum. Candidatus Hamiltonella defensa is a secondary endosymbiont of aphids. This organism protects the aphid host by killing parasitic wasp larvae.
Subject: NC_014228:2270000 Xenorhabdus nematophila ATCC 19061, complete genome
Lineage: Xenorhabdus nematophila; Xenorhabdus; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria
General Information: This genus is a group of insect pathogens which live in a mutualistic relationship with the soil nematode family, Steinernematidae. Free-living, juvenile Steinernema spp. enter insect larvae through the digestive tract. They penetrate the larvae body cavity and release Xenorhabdus spp. into the hemolymph (blood). The bacteria multiply rapidly, killing the larvae, and providing suitable nutrient conditions for the growth and reproduction of the Steinernema spp. The nematode matures and reproduces. The new juveniles reassociate with Xenorhabdus spp. and are released into the soil. Unlike Xenorhabdus bovienii, which is found in different Steinernema spp., Xenorhabdus nematophila is associated specifically with Steinernema carpocapsae and can be used as a model for studying host specificity.