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Assessment of rpoB and 16S rRNA Genes as Targets for PCR-Based Identification of Pasteurella pneumotropica

机译:评估rpoB和16S rRNA基因作为基于PCR鉴定嗜热巴斯德氏菌的靶标

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DiagnosisofPasteurellapneumotropicainlaboratoryanimalsreliesonisolationoftheorganism,biochemicalcharacterization,and,morerecently,DNA-baseddiagnosticmethods.16SrRNAandrpoBgenesequenceswereexaminedfordevelopmentofareal-timePCRassay.PartialsequencingofrpoB(456bp)and16SrRNA(1368bp)ofPasteurellapneumotropicaisolatesidentifiedbymicrobiologicandbiochemicalassaysindicatedthateithergenesequencecanbeusedtodistinguishP.pneumotropicafromothermembersofthePasteurellaceaefamily.However,alignmentofrpoBsequencesfromthePasteurellapneumotropicaHeyl(15sequences)andJawetz(16sequences)biotypeswithotherPasteurellaceaesequencesfromGenBankindicatedthatalthoughrpoBDNAsequencingcouldbeusedfordiagnosis,developmentofdiagnosticprimersandprobeswouldbedifficult,becausethesequencevariabilitybetweenHeylandJawetzbiotypesisnotclusteredinanyparticularregionoftherpoBsequence.Incontrast,alignmentof16SrRNAsequencesrevealedaregionwithuniqueandstablenucleotidemotifssufficienttopermitdevelopmentofaspecificfluorogenicreal-timePCRassaytoconfirmP.pneumotropicaisolatedbycultureandtodifferentiateHeylandJawetzbiotypes.
机译:DiagnosisofPasteurellapneumotropicainlaboratoryanimalsreliesonisolationoftheorganism,biochemicalcharacterization,并且,morerecently,DNA-baseddiagnosticmethods.16SrRNAandrpoBgenesequenceswereexaminedfordevelopmentofareal-timePCRassay.PartialsequencingofrpoB(456bp)and16SrRNA(1368bp)ofPasteurellapneumotropicaisolatesidentifiedbymicrobiologicandbiochemicalassaysindicatedthateithergenesequencecanbeusedtodistinguishP.pneumotropicafromothermembersofthePasteurellaceaefamily.However,alignmentofrpoBsequencesfromthePasteurellapneumotropicaHeyl(15sequences)andJawetz(16sequences)biotypeswithotherPasteurellaceaesequencesfromGenBankindicatedthatalthoughrpoBDNAsequencingcouldbeusedfordiagnosis,developmentofdiagnosticprimersandprobeswouldbedifficult,becausethesequencevariabilitybetweenHeylandJawetzbiotypesisnotclusteredinanyparticularregionoftherpoBsequence.Incontrast,alignmentof16SrRNAsequencesrevealedaregionwithuniqueandstablenucleotidemotifssufficienttopermitdevelopmentofaspecificfluorogenicreal-timeP CR测定可通过培养分离出嗜肺性疟原虫并区分Heyland Jawetz生物型。

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