Search results for "Evolutionary and Genomic Microbiology"

showing 4 items of 4 documents

To B or Not to B: Comparative Genomics Suggests Arsenophonus as a Source of B Vitamins in Whiteflies

2018

Insect lineages feeding on nutritionally restricted diets such as phloem sap, xylem sap, or blood, were able to diversify by acquiring bacterial species that complement lacking nutrients. These bacteria, considered obligate/primary endosymbionts, share a long evolutionary history with their hosts. In some cases, however, these endosymbionts are not able to fulfill all of their host's nutritional requirements, driving the acquisition of additional symbiotic species. Phloem-feeding members of the insect family Aleyrodidae (whiteflies) established an obligate relationship with Candidatus Portiera aleyrodidarum, which provides its hots with essential amino acids and carotenoids. In addition, ma…

0301 basic medicineMicrobiology (medical)food.ingredientPseudogeneRiboflavin[SDV]Life Sciences [q-bio]030106 microbiologyArsenophonuslcsh:QR1-502GenomeMicrobiologylcsh:Microbiology03 medical and health sciencesMetabolic complementationfooda section of the journal Frontiers in Microbiology whiteflywhiteflyriboflavinSymbiosisgenome reductionGeneticsComparative genomicsGenome reductionbiologyObligatefungiVitaminsbiochemical phenomena metabolism and nutritionbiology.organism_classificationvitaminsWhiteflysymbiosismetabolic complementationB vitamins030104 developmental biologyAleurodicus dispersusWolbachiaThis article was submitted to Evolutionary and Genomic MicrobiologyArsenophonusWolbachiaFrontiers in Microbiology
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Domain organization and evolution of multifunctional autoprocessing repeats-in-toxin (MARTX) toxin in Vibrio vulnificus.

2011

ABSTRACT The objective of this study was to analyze multifunctional autoprocessing repeats-in-toxin (MARTX) toxin domain organization within the aquatic species Vibrio vulnificus as well as to study the evolution of the rtxA1 gene. The species is subdivided into three biotypes that differ in host range and geographical distribution. We have found three different types (I, II, and III) of V. vulnificus MARTX (MARTX Vv ) toxins with common domains (an autocatalytic cysteine protease domain [CPD], an α / β-hydrolase domain, and a domain resembling that of the LifA protein of Escherichia coli O127:H6 E2348/69 [Efa/LifA]) and specific domains (a Rho-GTPase inactivation domain [RID], a domain of …

DNA BacterialGene Transfer HorizontalBacterial ToxinsMolecular Sequence DataVibrio vulnificusmedicine.disease_causeApplied Microbiology and BiotechnologyBacterisMicrobiologyEvolution MolecularVibrionaceaemedicineEvolutionary and Genomic MicrobiologyVibrio vulnificusGeneEscherichia coliGenètica bacterianaGeographyEcologybiologyToxinSequence Analysis DNAbiology.organism_classificationCysteine proteaseBacterial Typing TechniquesProtein Structure TertiaryHorizontal gene transferBacteris patògensBacteriaFood ScienceBiotechnology
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New Clues about the Evolutionary History of Metabolic Losses in Bacterial Endosymbionts, Provided by the Genome of Buchnera aphidicola from the Aphid…

2011

ABSTRACT The symbiotic association between aphids (Homoptera) and Buchnera aphidicola ( Gammaproteobacteria ) started about 100 to 200 million years ago. As a consequence of this relationship, the bacterial genome has undergone a prominent size reduction. The downsize genome process starts when the bacterium enters the host and will probably end with its extinction and replacement by another healthier bacterium or with the establishment of metabolic complementation between two or more bacteria. Nowadays, several complete genomes of Buchnera aphidicola from four different aphid species ( Acyrthosiphon pisum , Schizaphis graminum , Baizongia pistacea , and Cinara cedri ) have been fully seque…

DNA BacterialMolecular Sequence DataBacterial genome sizeApplied Microbiology and BiotechnologyGenomeEvolution MolecularBuchneraPhylogeneticsAnimalsEvolutionary and Genomic MicrobiologySymbiosisPhylogenyWhole genome sequencingGeneticsComparative genomicsEcologyPhylogenetic treebiologySequence Analysis DNAbiochemical phenomena metabolism and nutritionbiology.organism_classificationAcyrthosiphon pisumAphidsBuchneraGenome BacterialFood ScienceBiotechnologyApplied and Environmental Microbiology
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Chimeric Genomes of Natural Hybrids of Saccharomyces cerevisiae and Saccharomyces kudriavzevii

2009

11 pages, 6 figures.-- PMID: 19251887 [PubMed].-- Printed version published Apr 2009.

Molecular Sequence DataSaccharomyces cerevisiaeNatural hybridsWineSaccharomyces cerevisiaeBiologyApplied Microbiology and BiotechnologySaccharomycesGenomeGenètica molecularSaccharomycesMeiosisaCGHEvolutionary and Genomic MicrobiologyDNA FungalGeneGene RearrangementRecombination GeneticGeneticsComparative Genomic HybridizationEcologyChromosomeqRT-PCRSequence Analysis DNAbiology.organism_classificationAneuploidyDNA FingerprintingChromosome DeletionGenome FungalRestriction fragment length polymorphismSaccharomyces kudriavzeviiRecombination pointsPolymorphism Restriction Fragment LengthSaccharomyces kudriavzeviiFood ScienceBiotechnologyGenome hybridization
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