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茶叶科学 ›› 2010, Vol. 30 ›› Issue (1): 19-26.doi: 10.13305/j.cnki.jts.2010.01.004

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茶树简化EcoTILLING技术的建立

金基强, 陈亮*, 姚明哲, 王新超, 马春雷   

  1. 中国农业科学院茶叶研究所茶树资源与改良研究中心/国家茶树改良中心,浙江 杭州 310008
  • 收稿日期:2009-07-31 修回日期:2009-09-30 发布日期:2019-09-10
  • 通讯作者: liangchen@mail.tricaas.com
  • 作者简介:金基强(1983—),男,河南信阳人,助理研究员,主要从事茶树遗传育种研究
  • 基金资助:
    国家“863”计划(2006AA10Z171)、国家自然科学基金(30901159)、“现代农业(茶叶)产业技术体系建设专项资金”、“十一五”国家科技支撑计划(2006BAD13B06)、公益性行业(农业)科研专项(3-35-02)和浙江省自然科学基金(Y3090041)资助

Simplification of EcoTILLING Technique for Tea Plant

JIN Ji-qiang, CHEN Liang*, YAO Ming-zhe, WANG Xin-chao, MA Chun-lei   

  1. Research Center for Tea Germplasm and Improvement, Tea Research Institute of the Chinese Academy of Agricultural Sciences/ National Center for Tea Improvement, Hangzhou 310008, China
  • Received:2009-07-31 Revised:2009-09-30 Published:2019-09-10

摘要: EcoTILLING(Ecotype Targeting Induced Local Lesions IN Genomes)可快速检测自然群体中的SNP(Single Nucleotide Polymorphism)等DNA变异。第一次建立了简化的茶树EcoTILLING技术体系:首先筛选扩增目的基因的特异PCR引物;然后通过CELⅠ酶切PCR产物优化实验,确定酶切时间20 min、10×buffer组成为250 mmol/L Tris-HCl(pH7.4)、150 mmol/L KCl、15 mmol/L MgSO4、4 μg/mL BSA和0.04% Triton x-100,反应温度为47.5℃,酶量为1.8 µL CJE(Celery Juice Extract)/10 μL反应体系时,酶切的谱带信号较强、特异性高;初步确定合适的非变性聚丙烯酰胺凝胶电泳检测条件为凝胶浓度5%、上样量4~5 μL、有效分离长度要达到15 cm。利用上述简化的EcoTILLING对6份茶树种质870 bp的PPO基因片段实现了分型,经测序验证酶切产生的谱带与6份种质内部或不同种质间的SNP位置吻合。

关键词: 茶树, CEL I, EcoTILLING, SNP

Abstract: EcoTILLING(Ecotype Targeting Induced Local Lesions In Genomes) had been used as a SNP(Single Nucleotide Polymorphism) discovery tool to examine DNA variation in natural populations. A simple EcoTILLING technique for tea plant was established. Firstly, specific PCR primers for the amplification of the target gene were screened out. Then through comparison, a fine CELⅠ enzyme digestion could be resulted using 20 min with 10× buffer containing 250 mmol/L Tris-HCl (pH7.4), 150 mmol/L KCl, 15 mmol/L MgSO4, 4 μg/mL BSA and 0.04%Triton x-100, and 1.8 μL CJE(Celery Juice Extract)/10 μL reacting solution at 47.5℃. Moreover, a good picture could be obtained when using 5% polyacrylamide gels (PAGE), adding 4~5 μL digesting products in PAGE electrophoresis. The 870 bp fragment within the PPO (Polyphenol Oxidase) gene of 6 tea germplasms was distinguished from each other using the simplified EcoTILLING. The CELⅠdigested bands were ascertained that according to the position of SNP in or between the 6 accessions through sequencing verification.

Key words: tea plant, CEL I, EcoTILLING, SNP

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