MeSH definition : A genus of gram-negative bacteria existing symbiotically with nematodes of the family
Heterorhabditidae (see RHABDITOIDEA). These nematodes infect a variety of soil-dwelling
insects. Upon entering an insect host, the nematode releases Photorhabdus from its
intestinal tract and the bacterium establishes a lethal septicemia in the insect.;
A genus of gram-negative bacteria existing symbiotically with nematodes of the family
Heterorhabditidae (see RHABDITOIDEA). These nematodes infect a variety of soil-dwelling
insects. Upon entering an insect host, the nematode releases Photorhabdus from its
intestinal tract and the bacterium establishes a lethal septicemia in the insect.