1中国林业科学研究院经济林研究开发中心,郑州450003;,2河南省经济林和林木种苗工作站,郑州 450003;,3郑州植物园,郑州 450042,1中国林业科学研究院经济林研究开发中心,郑州450003;,1中国林业科学研究院经济林研究开发中心,郑州450003;
国家自然科学基金项目( 31500552);中国林业科学研究院基本科研业务费专项资金项目(CAFYBB2016QB016); 国家林木( 含竹藤花卉) 种质资源平台( 2005DKA21003)
1Non-timber Forestry Research and Development Center,Chinese Academy of Forestry,Zhengzhou 450003;,2Henan Workstation of Non-timber Forestry and Seedling, Zhengzhou 450003;,3 Zhengzhou Botanical Garden,Zhengzhou 450042,1Non-timber Forestry Research and Development Center,Chinese Academy of Forestry,Zhengzhou 450003;,1Non-timber Forestry Research and Development Center,Chinese Academy of Forestry,Zhengzhou 450003;
为了解华仁杏微卫星(SSR)分布规律,开发EST-SSR引物,为华仁杏种质资源评价与辅助育种提供有效的鉴定标记。本研究采用生物信息学方法对华仁杏幼果转录组SSR位点的数量、频率、分布特征进行了统计分析;利用转录组数据进行了SSR引物的筛选和开发,并利用开发出的引物对华仁杏29个无性系进行了多态位点检测和鉴定。结果表明:华仁杏幼果EST-SSR的分布频率为19.21%,重复单元的重复次数分布在5~24次之间,优势重复基序为单核苷酸、2核苷酸、3核苷酸,分别占总SSR的19.81%,46.47%、32.49%。参试的139对引物中有39对引物可扩增出目标序列,其中24对引物可检测出多态性位点,占参试引物总数的17.27%。24对引物在29个华仁杏无性系中共检测出了170个等位基因位点,多态性信息含量(PIC)介于0.33~0.87之间,平均为0.64,其中高多态性引物19条,占多态性引物比例的79.2%。本研究对华仁杏转录组SSR信息进行了分析,并开发出了19对高多态性SSR引物,5对中多态性引物,为华仁杏种质资源评价及分子标记辅助育种提供了基础。
The objective of this study was to understand the distribution pattern of microsatellite (SSR) and to develop EST-SSR primers to provide effective identification markers for the evaluation of germplasm resources and assisted breeding of Huaren apricot. In this study, the number, frequency and distribution of SSR loci in young apricot fruit were analyzed by bioinformatics. The SSR primers were screened and developed using transcriptome data. Polymorphic loci in 29 clones of Huaren apricot were detect and identify using the developed primers. The results showed that the frequency of EST-SSR was 19.21% and the repetitive number of repeat units was between 5 and 24 times. The dominant repeat motifs were single nucleotide, dinucleotide and trinucleoside Acid, accounting for 19.81%, 46.47%, 32.49% of the total SSR respectively. Among the 139 pairs of primers tested, 39 pairs of primers amplified the target sequence, of which 24 pairs of primers could detect polymorphic sites, accounting for 17.27% of the total number of primers tested. A total of 170 alleles were detected in 29 Huaren apricot clones using 24 pairs of primers. The PIC ranged from 0.33 to 0.87 with an average of 0.64, of which, high polymorphism primer 19 pairs, accounting for 79.2% of the proportion of polymorphic primers. In this study, SSR information of Huaren apricot transcriptome was analyzed and 19 pairs of high polymorphic SSR primers and 5 pairs of moderate polymorphic primers were developed, which provides the foundation for evaluating the germplasm resources of Huaren apricot and molecular markers Breeding.
赵罕,高福玲,郭欢欢,等.华仁杏幼果转录组SSR信息分析及其分子标记开发[J].植物遗传资源学报,2018,19(5):987-992.
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