6533b7d6fe1ef96bd1266c8a
RESEARCH PRODUCT
Massive presence of insertion sequences in the genome of SOPE, the primary endosymbiont of the rice weevil Sitophilus oryzae
Rosario Gil BensoEugenio Belda CuestaMaria Jose Gosalbes SolerLuis DelayeAgnès VallierCarole Vincent-monégatFrancisco J. Silva MorenoAndrés MoyaAmparo Latorresubject
charanconUNESCO::CIENCIAS DE LA VIDA::Microbiología ::BacteriologíasymbiosemutagenèseSOPE (Sitophilus oryzae primary endosymbiont); Sitophilus oryzae (rice weevil); Insertion sequences (IS); Endosymbiosisséquence d'insertionmutagénèse insertionnelledescription
Bacteria that establish an obligate intracellular relationship with eukaryotic hosts undergo an evolutionary genomic reductive process. Recent studies have shown an increase in the number of mobile elements in the first stage of the adaptive process towards intracellular life, although these elements are absent in ancient endosymbionts. Here, the genome of SOPE, the obligate mutualistic endosymbiont of rice weevils, was used as a model to analyze the initial events that occur after symbiotic integration. During the first phases of the SOPE genome project, four different types of insertion sequence (IS) elements, belonging to well-characterized IS families from alpha-proteobacteria, were identified. In the present study, these elements, which may represent more than 20% of the complete genome, were completely characterized; their relevance as a source of gene inactivation, chromosomal rearrangements, and as participants in the genome reductive process are discussed herein. Rosario.Gil-Benso@uv.es; Eugenio.Belda@uv.es; Maria.Jose.Gosalbes@uv.es; Luis.Delaye@uv.es; Francisco.Silva@uv.es; Andres.Moya@uv.es
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 |