The striking case of tryptophan provision in the cedar aphid Cinara cedri.
Buchnera aphidicola BCc has lost its symbiotic role as the tryptophan supplier to the aphid Cinara cedri. We report the presence of a plasmid in this endosymbiont that contains the trpEG genes. The remaining genes for the pathway (trpDCBA) are located on the chromosome of the secondary endosymbiont "Candidatus Serratia symbiotica." Thus, we propose that a symbiotic consortium is necessary to provide tryptophan.
Gosalbes
María José
MJ
Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, Apartado de Correos 2085, 46071 Valencia, Spain.
Lamelas
Araceli
A
Moya
Andrés
A
Latorre
Amparo
A
D000818:Animals; D001042:Aphids / Q000382:microbiology*; D020635:Buchnera / Q000235:genetics / Q000378:metabolism* / Q000502:physiology; D005798:Genes, Bacterial / Q000235:genetics; D017403:In Situ Hybridization; D008957:Models, Genetic; D008969:Molecular Sequence Data; D010957:Plasmids / Q000235:genetics / Q000378:metabolism; D013559:Symbiosis / Q000235:genetics; D014364:Tryptophan / Q000378:metabolism*
D014364:Tryptophan