Gene Identification and Expression Analysis of 86,136 Expressed Sequence Tage（EST）from the Rice Genome-中国期刊网

摘要 ExpressedSequenceTag(EST)analysishaspioneeredgenome-widegenediscoveryandexpressionprofiling.Inordertoestablishageneexpressionindexinthericecultivarindica,wesequencedandanalyzed86,136ESTsfromninericecDNAlibrariesfromthesuperhybridcultivarLYP9anditsparentalcultivars.WeassembledtheseESTsinto13,232contigsandleave8,976singletons.Overall,7,497sequenceswerefoundsimilartotheexistingsequencesinGenBankand14,711arenovel.Thesesequencesareclassifiedbymolecularfunction,biologicalprocessandpathwaysaccordingtotheGeneOntology.WecomparedoursequencedESTswiththepubliclyavailable95,000ESTsfromjaponica,andfoundlittlesequencevariation,despitethelargedifferencebetweengenomesequences,Wethenassembledthecombined173,000riceESTsforfurtheranalysis.UsingthepooledESTs,wecomparedgeneexpressioninmetabolismpathwaybetweenriceandArabidopsisaccordingtoKEGG.Wefurtherprofiledgeneexpressionpatternsindifferenttissues,developmentalstages,andinaconditionalsterilemutant,aftercheckingthelibrariesarecomparablebymeansofsequencecoverage.Wealsoidentifiedsomepossiblelibraryspecificgenesandanumberofenzymesandtranscriptionfactorsthatcontributetoricedevelopment.

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Gene Identification and Expression Analysis of 86,136 Expressed Sequence Tage（EST）from the Rice Genome

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Gene Identification and Expression Analysis of 86,136 Expressed Sequence Tage（EST）from the Rice Genome

来源期刊

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