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1、中国水稻科学(ChinJRiceSci),２０１５,２９(２):２００－２０７http://www．ricesci．cn２００DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０２．０１２印度梨形孢对水稻的促生作用及其机理的初探吴金丹１陈乾２刘晓曦１林福呈１高其康３楼兵干１,∗(１浙江大学生物技术研究所,水稻生物学国家重点实验室,杭州３１００５８;２中国水稻研究所,杭州３１０００６;３浙江大学农生环测试中心,杭州３１００５８;∗通讯联系人,EＧmail:bglou＠zju．edu．cn)PreliminaryStudyonMechanis
2、msofGrowthPromotioninRiceColonizedbyPiriformosporaindicaWUJinＧdan１,CHENQian２,LIUXiaoＧxi１,LINFuＧcheng１,GAOQiＧkang３,LOUBingＧgan１,∗(１StateKeyLaboratoryofRiceBiology,InstituteofBiotechnology,ZhejiangUniversity,Hangzhou３１００５８,China;２ChinaNationalRiceResearchInstitute,Hangzhou３１０００６,Chi
3、na;３AnalysisCenterofAgrobiologyandEnvironmentalSciences,ZhejiangUniversity,Hangzhou３１００５８,China;∗Correspondingauthor,EＧmail:bglou＠zjue．duc．n)WUJindan,CHENQian,LIUXiaoxi,etal．PreliminarystudyonmechanismsofgrowthpromotioninricecolonizedbyPiriformosporaindica．ChinJRiceSci,２０１５,２９(２):
4、２００Ｇ２０７．Abstract:Piriformosporaindicaisarootendophyticfungus,whichisabletoestablishbeneficialsymbioticrelationshipswithplant,anditcanpromotethegrowthofplants,enhancecropyield．InordertostudytheimpactofP．indicaongrowthanddevelopmentofrice,Weanalyzedthedifferencesinplantheight,biomas
5、s,tillering,heading,panicleproperties,chlorophyllcontent,nitratereductase(NR)activity,rootactivityandexpressionofgrowthＧrelatedgenesbetweennonglutinousricecolonizedandunＧcolonizedbyP．indica．Theresultsshowedthattheplantheight,biomassofshoot,thenumberoftillers,rootactivityandNRactiv
6、ityofricecolonizedbyP．indicaweresignificantlyhigherthanthatinunＧcolonizedones．RicecolonizedbyP．indicaheaded４－６daysearlierthantheunＧcolonizedrice．Thecontentsofchlorophyllincreasedby１９．７７％and１７．８９％respectivelyafterP．indicatreatmentfor３and４weeks．RTＧPCRanalysisshowedthattheexpressiono
7、fauxinＧregulatedgenesOsIAA１３andYUCCAwereupＧregulatedinleavesofricecolonizedbyP．indica,being１．４９and１．３０foldsashighasthatofcontrolplants．TheexpressionofNRR,whichnegativelyregulatesthegrowthofrice,was５８％ashighasthatofcontrolplants．Theresultsindicatedthatthegrowthpromotionofriceconfer
8、redbyP．indicawasrelevanttochlorop
