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时间:2020-06-04
《水稻类病斑及早衰突变体 lms1的鉴定及基因初步定位.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、福建农业学报29(1):29~34,2014FujianJournalofAgriculturalSciences文章编号:1[)(】8—0384(2014)o1~29一O6林艳,陈在杰,田大刚,等.水稻类病斑及早衰突变体lmsl的鉴定及基因初步定位[J].福建农业学报,2Ol4,29(1):29—34.LINY,CHENZ—J,TIAND-G,eta1.IdentificationandGeneMappingofaLesionMimicandSenescenceMutantlmslinRice[J].F
2、ianJournalofAgriculturalSciences,2014,29(1):29—34.水稻类病斑及早衰突变体lmsl的鉴定及基因初步定位林艳,陈在杰,田大刚,杨广阔,杨绍华,刘华清,陈松彪,王锋H(1.福建省农业科学院生物技术研究所/福建省农业遗传工程重点实验室,福建福州350003;2.福建农林大学生命科学学院,福建福州350002)摘要:通过筛选籼稻恢复系明恢86的组培变异后代,获得1个类病斑及早衰突变体lmsl(1esionmimicandsenescence1)。lmsl植株生长至拔
3、节期开始在叶片上出现黄褐色小斑点,随后斑点逐渐扩展至大部分叶片和茎组织;生长至抽穗期后呈现早衰,穗、茎、叶明显干枯,并快速衰亡。RT—PCR分析表明,在呈现类病斑性状叶片组织的lsml中,病程相关基因PBZ1、PAL1表达明显高于其在野生型叶片组织中的水平。遗传分析表明,lmsl的突变性状受单隐性核基因控制。利用9311与lmsl配置的Fz及F。群体进行基因定位,将lmsl基因定位在水稻第l1染色体长臂末端。关键词:水稻;类病斑;早衰;基因定位中图分类号:S511文献标识码:AIdentification
4、andGeneMappingofaLesionMimicandSenescenceMutantfms1inRiceLINYan,CHENZai—jie,TIANDa-gang,YANGGuang—kuo,YANGShao—hua,LIUHua—qing,CHENSong—biao.WANGFeng(1.BiotechnologyResearchInstitute,FujianKeyLaboratoryofGeneticEngineeringforAgriculture,FujianAcademyofAgr
5、iculturalSciences,Fuzhou,Fujian350003,China;2.CollegeofLifeScience,FianAgricultureandForestryUniversity,Fuzhou,Fian350002,China)Abstract:Alesionmimicandsenescencemutant,designatedaslmsl,wasisolatedfromthetissuecultureprogenyofindicaricerestorerlineMinghui
6、一86.1mslplantsstartedtoappearsmallbrownspotsontheleavesinelongationstage,andthespotsgraduallyspreadedtowholeleavesandsheaths.Withthegrowthoftheplantstoheadingstage,lmsldisplayedasenescentphenotype,whereasleaves,stems,andpaniclesdriedobviously,resultinginw
7、holeplantsdeath.RT—PCRanalysisrevealedthattheexpressionofpathogenesis—relatedgenesPBZlandPAL1wasinducedinlmslleaftissues.Geneticanalysissuggestedthatthelociforthemutantphenotypewascontrolledbyasinglerecessivegene.F2andF3populationsderivedfromacrossbetween
8、9311andlmslwereusedforgenemapping,andthelmsllocuswasmappedclosetotheterminalregionofthelongarmofchromosome11.Keywords:rice;lesionmimic;senescence;genemapping植物类病斑突变体(1esionmimicmutant,中,包括拟南芥、水稻、玉米、大麦和小麦等。已LMM)是一类在没
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