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1、中國油料作物學(xué)報2014,36(1):098-0105ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007-9084.2014.01.015ISSR標(biāo)記分析油菜黑脛病原菌遺傳多樣性1,21,2113郝麗芬,宋培玲,李子欽,皇甫海燕,李強生(1.內(nèi)蒙古農(nóng)牧業(yè)科學(xué)院植物保護研究所,內(nèi)蒙古呼和浩特,010031,2.內(nèi)蒙古大學(xué)生命科學(xué)院,內(nèi)蒙古呼和浩特,010021;3.安徽省農(nóng)業(yè)科學(xué)院作物研究所,安徽合肥,230031)摘要:利用ISSR分子標(biāo)記技術(shù)分析了油菜黑脛病菌(Leptosphaeriabiglobosa)的遺傳多樣性。分離獲
2、得國內(nèi)菌株84株,并以15株國外(英國、加拿大、波蘭)油菜黑脛病菌菌株作為參照,利用篩選出的24條引物對這99株病原菌進行ISSR-PCR擴增。共擴增出245條帶,遺傳相似性系數(shù)為0.65~1.00,國內(nèi)和國外油菜黑脛病菌菌株很明顯被分為兩個菌群,中國84株菌基本按地理來源分為5個類群,只有江蘇省菌株分布于各個類群。各省的Nei’s基因多樣性指數(shù)范圍是0.1081~0.2527,而香農(nóng)(Shannon’s)信息指數(shù)的范圍是0.1575~0.3726,順序為江蘇>湖北>安徽>內(nèi)蒙古>上海>四川。中國與英國和加拿大菌株的遺傳一致度分別為0.8343和0.7839。關(guān)鍵詞:油菜黑脛??;Lept
3、osphaeriabiglobosa;ISSR;遺傳多樣性;地理來源中圖分類號:S435.654文獻標(biāo)識碼:A文章編號:1007-9084(2014)01-0098-08GeneticdiversityofphomastemcankerpathogenLeptosphaeriabiglobosabyISSR1,21,2113HAOLi-fen,SONGPei-ling,LIZi-qin,HUANGPUHai-yan,LIQiang-sheng(1.PlantProtectionInstitute,InnerMongoliaAcademyofAgricultural&AnimalHusb
4、andrySciences,Hohhot010031,China;2.CollegeofLifeScience,InnerMongoliaUniversity,Hohhot010021,China;3.CropResearchInstitute,AnhuiAcademyofAgriculturalSciences,Hefei230031,China)Abstract:ThegeneticdiversityofLeptosphaeriabiglobosa,causingphomastemcankeronoilseedrape,wasanalyzedusingISSR(intersimple
5、sequencerepeats)marker.84blacklegisolateswerecollectedfromChinaand15fromtheUnitedKingdom,CanadaandPolandwereusedascontrol.Atotalof245bandsgeneratedbytheISSR-PCRwith24selectedprimerswerepolymorphic.Thedendrogramconstructedwith99individualsusingUPGMA(unweightedpairgroupmeananalysis)showedthatChines
6、eisolatesweredifferentfromCanadaandEurope.Meanwhile,Chineseisolatesfrom7provinceswerealmostdividedinto5groupsaccordingtotheirgeographicallocationsonlyisolatesfromtheJiangsuProvincedistributedintoothergroups.Nei’sgenediversityrangedfrom0.2527(inJiangsu)to0.1081(inSichuan),withtheorderofJiangsu>Hu
7、bei>Anhui>InnerMongolia>Shanghai>Sichuan.Shannon’sinformationindexwerefrom0.1575to0.3726.TheNei’sgeneidentitywere0.7839betweentheChinaandCanadaisolates,and0.8343betweenChinaandtheUnitedKingdomisolates.Keywords:Phomaste