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ID:28756186
大小:9.70 MB
页数:131页
时间:2018-12-13
《利用ddrtpcr技术研究am真菌浸染紫穗槐过程中相关基因》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、•;IYIIIII11111111191111114111111011111171111115111111211111黑龙江大学硕士学位论文GW327878,GW327879,GW327880,GW327881。同时,对12条差异片段进行Blastx比对分析,其中,DD.1与蓖麻属的假定蛋白相似性较高,DD.2与同源域.亮氨酸拉链蛋白有关,调控植物特有的发育进程,以及对包括外界胁迫在内的环境信号的应答;DD.3与ATP结合盒蛋白有关,可以帮助代谢产物、离子、糖、氨基酸、脂类、固醇以及药物等多种底物通过细胞内、外膜;DD-4与阿耶罗菌属和青霉菌属的假定蛋白相似;DD.5与大麦的呼吸
2、氧化酶基因相似,在菌根共生的前期阶段,形成丛枝菌根时,最明显的植物生理变化就是植物的呼吸作用增加;DD.7与黄杆菌属的基因组有较大的相似性;DD.8与乙酰转移酶相关,对蛋白质的稳定性和活性产生重大影响;DD.9与阿耶罗菌属假定蛋白相似性较高;DD.10与苜蓿中核糖核酸酶H相似;DD.11在拟南芥中克隆的转座子基茵序列相似;DD.12与色素蛋白有关,而色素蛋白主要是在植物进行光合作用中有重要的作用。其中,DD.6没有相似性高的基因或是相关蛋白基因。关键词:丛枝菌根;信号识别;DDRT-PCR;反Northern杂交;生物信息学Ⅱl’’AbstractAbstractArbuscul
3、armycorrhiza㈣formedbetweenplantrootsandfungiisoneofthemostwidespreadsymbioticassociationsfoundiIlnature.TheAMsymbiosisisbasedonbidirectionalnutrientexchange;AMfungussupportstheplantwithmacronulrientssuchasphosphorusandnitrogen,whereasitreceivesphotosyntheticallyfixedc盈rbonfromtheplant.Inorder
4、tOclaritythemolecularmechanismonarbuscularmycrrhizalformation,relatedgenesthatexpressedinAmorphafruacosaroots,colonizedGlomusmosseaeandnon-mycorrhizalwereprofiledatdifferentstageofformationrespectively,usingdifferential.displayRT-PCR(DDRT-PCR).Inthisstudy,severaldifferentiallyexpressedgenesan
5、dtheirpotentialroleareelucidatedanddiscussed.Consideringtheirputativerelationshipinformingmyconhizae,thesesequencesmaybeconsideredofinterestforf11rtherstudiesandmayprovidesomecluestodetermininghowAMareestablished.ThiswillopenBOWavenuesformycorrhizalresearchtoelucidatethemechanismsofwoodyplant
6、smycorrhizalsymbiosis.Theendosymbiosesformedbetweenplantsandmicroorganismsplayanimportantroleinargricnitureandnaturalecosystems.First,amongthethreeextractionmethodsoftotalRNA∞iozol,SDS/phenolandCTAB),wheninfectionrateswereO%,10%,30%,50%,100%ofAmorphafruticosarootsinoculatedAMF(Glomuamosseae),
7、andmeasuredbytheirpurityandintegritythrough1.1%agarosegelelectrophoresis,theresultsShowedthattheinfectioninfivedifferentinfectionrate,boththetotalRNAextractedbyBiozolwerehiIghpurityandgoodqualityinonly2-3h.TotalRNAextractedbyBiozolatinfection
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