Search results for "Blattabacterium"
showing 3 items of 13 documents
Understanding the dialog between the gut microbiota and the endosymbiont in the model system Blattella germanica
2020
Aquesta tesi doctoral forma part de la investigació sobre l’evolució de la simbiosi en insectes realitzada durant molts anys pel grup de Genètica Evolutiva de la Universitat de València. L’organisme model utilitzat en aquest estudi és la panerola alemanya, Blattella germanica, un insecte omnívor i cosmopolita. La panerola alemanya posseeix dos simbionts: un endosimbiont, Blattabacterium, i una microbiota intestinal complexa. La funció de l’endosimbiont ha estat proposada prèviament com a la producció de metabòlits essencials mitjançant el reciclatge del nitrogen a través de la via ureolítica. Aquesta panerola comparteix la font d’aliment i l’ambient amb els humans, cosa que podria explicar …
The cockroach Blattella germanica obtains nitrogen from uric acid through a metabolic pathway shared with its bacterial endosymbiont.
2014
Uric acid storedin the fat bodyof cockroaches is a nitrogen reservoirmobilized in times of scarcity. The discovery of urease in Blattabacterium cuenoti, the primary endosymbiont of cockroaches, suggests that the endosymbiont may participate in cockroach nitrogen economy. However, bacterial urease may only be one piece in the entire nitrogen recycling process from insect uric acid. Thus, in addition to the uricolytic pathway to urea, there must be glutamine synthetase assimilating the released ammonia by the urease reaction to enable the stored nitrogen to be metabolically usable. None of the Blattabacterium genomes sequenced to date possess genes encoding for those enzymes. To test the host…
Gut Microbiota Cannot Compensate the Impact of (quasi) Aposymbiosis in Blattella germanica
2021
Simple Summary The German cockroach Blattella germanica is a good model to study complex symbiotic relationships because the following two symbiotic systems coexist in a single individual: the endosymbiont Blattabacterium (living inside specialized cells called bacteriocytes) and the gut microbiota. Although the role of the endosymbiont has been fully elucidated, the function of the gut microbiota remains unclear. The study of the gut microbiota will benefit from the availability of insects deprived of Blattabacterium. Our goal is to determine the effect of the removal (or, at least, the reduction) of the endosymbiont population on the cockroach’s fitness, in a normal gut microbiota communi…