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草业学报 ›› 2015, Vol. 24 ›› Issue (7): 146-154.DOI: 10.11686/cyxb2014232

• 研究论文 • 上一篇    下一篇

燕麦隐性核不育cSSR标记的开发及其验证

张丽君1, 刘龙龙1, 畅志坚2, 郭彬3, 崔林1*, *   

  1. 1.山西省农业科学院农作物品种资源研究所,农业部黄土高原作物基因资源与种质创制重点实验室,山西 太原 030031;
    2.山西省农业科学院作物研究所,山西 太原 030031;
    3.山西省晋中市寿阳县乡镇农产品质量安全监管站,山西 寿阳 045400
  • 收稿日期:2014-05-08 出版日期:2015-07-20 发布日期:2015-07-20
  • 作者简介:张丽君(1981-),女,河北行唐人,助理研究员,博士。E-mail:lijun.zhang911@163.com
  • 基金资助:
    山西省农科院博士基金项目(YBSJJ209),山西省自然基金项目(2014110303-1),山西省国际合作项目(2014-081032-1)和国家燕麦荞麦产业技术体系(CARS-08-A1)项目资助

Development and functional verification of cSSR markers for recessive genetic male sterility in oats

ZHANG Li-Jun1, LIU Long-Long1, CHANG Zhi-Jian2, GUO Bin3, CUI Lin1, *   

  1. 1.Crop Germplasm Resources Research Institute, Shanxi Academy of Agricultural Sciences;
    Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan 030031, China;
    2.Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China;
    3.Quality and Safety Supervision of Township Agricultural Station, Shouyang 045400, China
  • Received:2014-05-08 Online:2015-07-20 Published:2015-07-20

摘要: 构建燕麦隐性核不育转录组数据库,开发cSSR标记,丰富燕麦分子标记数据库,并对隐性核不育相关cSSR标记进行验证,为充分利用燕麦种质资源及深入研究隐性核不育奠定基础。对燕麦雄性不育近等基因系CAMS1进行转录组测序,利用软件对得到的EST序列进行SSR位点查找和分析,开发cSSR 引物。并用CAMS1×品燕2号F2代群体对所开发的雄性不育相关的cSSR引物进行验证。通过转录组测序获得的EST序列中6409条存在SSR位点,736条序列中有2个及2个以上SSR位点;在所有SSR位点中三核苷酸、二核苷酸重复序列最多,分别为4340(56.66%)和1768(24.30%)个。三核苷酸重复中,CCG/CGG(26.68%)、AGG/CTT(21.29%)、AGC/CTG(18.48%)出现的频率较多,二核苷酸重复中,以AG/CT(60.63%)和AC/GT(26.24%)出现的频率较高;根据开发的cSSR设计了13344对cSSR引物,选择与雄性不育相关且能设计引物的21条序列合成45对SSR引物。PCR检测表明,32对引物(71%)有扩增产物,其中11对cSSR引物在亲本间的扩增产物具有多态性,7对引物在可育和不育性状池间存在差异。本研究对燕麦雄性不育近等基因系CAMS1进行了转录组测序,根据得到的EST序列开发了13344对cSSR 引物,并利用CAMS1×品燕2号F2代群体进行有效性检测,32对引物有扩增产物,7个标记可用于燕麦雄性不育材料的分子检测。

Abstract: The objective of this study was to develop new cSSR markers from an oat (Anena sativa) recessive genes male sterile transcriptome database. EST sequences obtained from a RNA-Seq of oat male sterile near-isogenic line CAMS9 were used to search for SSRs using software. cSSR primers were developed and functional verification for those related to male sterility was determined with a F2 population of hybridized CAMS9 and Pinyan 2.6409 EST sequences obtained from the transcriptome sequencing had SSR loci and 736 of these sequences had 2 or more loci. Most of the sequence motifs were dinucleotides (56.66%) and trinucleotides (24.30%). For trinucleotides, CCG/CGG (26.68%), AGG/CTT (21.29%), AGC/CTG (18.48%), AAG/CTT (8.18%) and ACC/GGT (8.11%) were the most frequent repeats. For dinucleotides, AG/CT (60.63%) and AC/GT (26.24%) were the most frequent. Based on these cSSRs, 13344 pairs of cSSR primers were designed. 45 pairs of the primers were synthesized based on male sterile-related cSSRs, and 32 (71.1%) of the pairs led to amplified products. Using the F2 population, the polymorphism of 11 pairs between parents and the differences of 7 pairs between fertile and sterile trait pools were detected. In total, 13344 pairs of cSSR primers have been developed from the RNA-Seq database. 32 pairs were related to fertility and 7 can be used for molecular detection of oat male sterility. These new cSSR markers are beneficial for the further use of oat germplasm and for the study of male sterility.