华北农学报 ›› 2015, Vol. 30 ›› Issue (6): 134-139. doi: 10.7668/hbnxb.2015.06.020

• 论文 • 上一篇    下一篇

鸟巢蕨EST-SSR标记的开发与应用

贾新平, 邓衍明, 孙晓波, 梁丽建   

  1. 江苏省农业科学院 园艺研究所, 江苏省高效园艺作物遗传改良重点实验室, 江苏 南京 210014
  • 收稿日期:2015-09-02 出版日期:2015-12-28
  • 通讯作者: 邓衍明(1976-),男,安徽泗县人,副研究员,博士,主要从事观赏植物生物技术育种研究.
  • 作者简介:贾新平(1983-),男,山西晋城人,助理研究员,博士,主要从事园艺植物分子生物学研究.
  • 基金资助:
    江苏省农业科技自主创新资金品种创新项目(CX(13)2044)

Development and Application of EST-SSR Marker in Asplenium nidus

JIA Xin-ping, DENG Yan-ming, SUN Xiao-bo, LIANG Li-jian   

  1. Institute of Horticulture, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210014, China
  • Received:2015-09-02 Published:2015-12-28

摘要: 为加速分子标记在鸟巢蕨研究中的应用,利用鸟巢蕨EST序列开展了EST-SSR标记的开发和应用研究.利用MISA软件对鸟巢蕨EST序列进行SSR位点查找,分析EST-SSR的总体特征,并利用Primer 3.0软件设计40对引物,选用10份蕨类材料检测引物的多态性.从42 907条鸟巢蕨EST序列中检测到6 067个SSR位点,其出现频率为1/6.62 kb,包括106种重复基元.在鸟巢蕨EST-SSR中,二核苷酸重复(2 873个,47.35%)是最主要的类型,其次是三核苷酸(1 107个,18.25%)和单核苷酸(972个,16.02%).出现最多的重复基元是AG/TC(1 371个,22.60%),其次是CA/GT(1 066个,17.57%)和A/T(628个,10.35%).设计合成了40对EST-SSR引物对10份蕨类材料进行PCR扩增,26对引物能扩增出明显条带,其中17对引物扩增出了65条多态性条带,平均每对引物多态性带为3.82条.遗传分析表明,10份蕨类材料之间的遗传相似系数为0.338~0.815,可将供试蕨类材料分为2个类群.从鸟巢蕨EST序列中开发SSR标记是有效和可行的,开发的EST-SSR引物可用于蕨类植物遗传分析研究.

关键词: 鸟巢蕨, 分子标记, EST-SSR

Abstract: To accelerate the application of molecular markers in Asplenium nidus ,EST-SSR markers development and utilization form the Asplenium nidus EST sequences were performed.A total of 42 907 EST sequences were obtained from the Asplenium nidus transcriptome,and these sequences were screened by using MISA software to search for SSR motifs.Forty pairs of primers were designed by Primer 3.0 software,and the polymorphism of the primer was tested by PCR amplification of 10 ferns.A total of 6 067 EST-SSR were identified with an average of one SSR per 6.62 kb,and included 106 SSR motif types.Dinucleotide repeats was the dominant type(2 873,47.35%),followed by trinucleotide(1 107,18.25%)and mononucleotide(972,16.02%)repeats.The dominant repeat motif in all EST-SSRs was AG/TC(1 371,22.60%),followed by CA/GT(1 066,17.57%)and A/T(628,10.35%).40 pairs of EST-SSR primers were designed and synthesized based on different motifs types,and verified with 10 fern varieties for polymorphism.Among them,26 primer pairs could produce clear and stable bands,and 17 out of 26 primer pairs could amplify 65 polymorphic bands with an average of 3.82 bands per primer pair.The genetic similarity coefficient and cluster analysis were calculated by NTSYS-pc 2.10e software.The genetic analysis showed that,the genetic similarity coefficients between the 10 cultivars ranged from 0.338 to 0.815,and the cluster analysis showed that all the cultivars could be categorized into two major clusters.These results showed that it is an effective and feasible way to develop EST-SSR markers from Asplenium nidus EST sequences,and the primers designed in this study can be used in genetic analysis of fern.

Key words: Asplenium nidus, Molecular marker, EST-SSR

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引用本文

贾新平, 邓衍明, 孙晓波, 梁丽建. 鸟巢蕨EST-SSR标记的开发与应用[J]. 华北农学报, 2015, 30(6): 134-139. doi: 10.7668/hbnxb.2015.06.020.

JIA Xin-ping, DENG Yan-ming, SUN Xiao-bo, LIANG Li-jian. Development and Application of EST-SSR Marker in Asplenium nidus[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(6): 134-139. doi: 10.7668/hbnxb.2015.06.020.

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