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时间:2018-04-14
《issr标记分析油菜黑胫病原菌遗传多样性》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、中国油料作物学报2014,36(1):098-0105ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007-9084.2014.01.015ISSR标记分析油菜黑胫病原菌遗传多样性1,21,2113郝丽芬,宋培玲,李子钦,皇甫海燕,李强生(1.内蒙古农牧业科学院植物保护研究所,内蒙古呼和浩特,010031,2.内蒙古大学生命科学院,内蒙古呼和浩特,010021;3.安徽省农业科学院作物研究所,安徽合肥,230031)摘要:利用ISSR分子标记技术分析了油菜黑胫病菌(Leptosphaeriabiglobosa)的遗传多样性。分离获
2、得国内菌株84株,并以15株国外(英国、加拿大、波兰)油菜黑胫病菌菌株作为参照,利用筛选出的24条引物对这99株病原菌进行ISSR-PCR扩增。共扩增出245条带,遗传相似性系数为0.65~1.00,国内和国外油菜黑胫病菌菌株很明显被分为两个菌群,中国84株菌基本按地理来源分为5个类群,只有江苏省菌株分布于各个类群。各省的Nei’s基因多样性指数范围是0.1081~0.2527,而香农(Shannon’s)信息指数的范围是0.1575~0.3726,顺序为江苏>湖北>安徽>内蒙古>上海>四川。中国与英国和加拿大菌株的遗传一致度分别为0.8343和0.7839。关键词:油菜黑胫病;Lept
3、osphaeriabiglobosa;ISSR;遗传多样性;地理来源中图分类号:S435.654文献标识码:A文章编号: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
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