Search results for "charancon"

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Identification of the Weevil immune genes and their expression in the bacteriome tissue

2008

Abstract Background Persistent infections with mutualistic intracellular bacteria (endosymbionts) are well represented in insects and are considered to be a driving force in evolution. However, while pathogenic relationships have been well studied over the last decades very little is known about the recognition of the endosymbionts by the host immune system and the mechanism that limits their infection to the bacteria-bearing host tissue (the bacteriome). Results To study bacteriome immune specificity, we first identified immune-relevant genes of the weevil Sitophilus zeamais by using suppressive subtractive hybridization (SSH) and then analyzed their full-length coding sequences obtained b…

PhysiologyPlant Scienceprotéines et peptides de signalisation intracellulaireStructural BiologyGene expressionlcsh:QH301-705.5Genetics0303 health sciencesAgricultural and Biological Sciences(all)EndosymbiosisReverse Transcriptase Polymerase Chain ReactionMicrobiology and ParasitologyIntracellular Signaling Peptides and ProteinsMicrobiologie et ParasitologielarveLarva1-1-1 Article périodique à comité de lectureInsect ProteinsGeneral Agricultural and Biological SciencesResearch ArticleBiotechnologyexpression géniquecharanconMolecular Sequence DatamuramidaseBiologyGeneral Biochemistry Genetics and Molecular BiologyMicrobiology03 medical and health sciencesAposymbioticcurculionidaeImmune systemEscherichia coliAnimalsGeneEcology Evolution Behavior and SystematicsAlphaproteobacteria030304 developmental biologyBiochemistry Genetics and Molecular Biology(all)030306 microbiologyTOLLIPIntracellular parasitefungiBacteriomeCell Biologybiochemical phenomena metabolism and nutritionGene Expression Regulationlcsh:Biology (General)WeevilsbacteriaCarrier ProteinsAntimicrobial Cationic Peptides[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/SymbiosisDevelopmental BiologyBMC Biology
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Massive presence of insertion sequences in the genome of SOPE, the primary endosymbiont of the rice weevil Sitophilus oryzae

2008

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 ide…

charanconUNESCO::CIENCIAS DE LA VIDA::Microbiología ::BacteriologíasymbiosemutagenèseSOPE (Sitophilus oryzae primary endosymbiont); Sitophilus oryzae (rice weevil); Insertion sequences (IS); Endosymbiosisséquence d'insertionmutagénèse insertionnelle
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