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Título: | The cockroach Blattella germanica obtains nitrogen from uric acid through a metabolic pathway shared with its bacterial endosymbiont |
Autor: | Patiño-Navarrete, Rafael; Piulachs, Maria-Dolors CSIC ORCID ; Bellés, Xavier CSIC ORCID ; Moya-Simarro, Andrés; Latorre, Amparo CSIC ORCID; Peretó, Juli CSIC ORCID | Palabras clave: | Glycine Proline Asparagine Glutamine Blattabacterium Nitrogen metabolism |
Fecha de publicación: | jul-2014 | Editor: | Royal Society (Great Britain) | Citación: | Biology Letters 10(7) (2014) | Resumen: | 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's contribution to the process, we have sequenced and analysed Blattella germanica transcriptomes fromthe fat body.We identified transcripts corresponding to all genes necessary for the synthesis of uric acid and its catabolismto urea, aswell as for the synthesis of glutamine, asparagine, proline and glycine, i.e. the amino acids required by the endosymbiont. We also explored the changes in gene expression with different dietary protein levels. It appears that the ability to use uric acid as a nitrogen reservoir emerged in cockroaches after its age-old symbiotic association with bacteria.. © 2014 The Author(s) Published by the Royal Society. All rights reserved. | Versión del editor: | http://dx.doi.org/10.1098/rsbl.2014.0407 | URI: | http://hdl.handle.net/10261/115709 | DOI: | 10.1098/rsbl.2014.0407 | Identificadores: | doi: 10.1098/rsbl.2014.0407 issn: 1744-957X |
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