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4种楠木AFLP反应体系优化建立
引用本文:周生财,黄华宏,童再康,吴小林.4种楠木AFLP反应体系优化建立[J].浙江农林大学学报,2013,30(5):789-796.
作者姓名:周生财  黄华宏  童再康  吴小林
作者单位:1.浙江农林大学 亚热带森林培育国家重点实验室培育基地,浙江 临安 311300;2.浙江省庆元县实验林场,浙江 庆元 323800
基金项目:浙江省重大科技攻关项目(2012C12908-4)
摘    要:采用核酸电泳缓冲液(TNE)结合十六烷基三甲基溴化铵(CTAB)提取的高质量楠木Phoebe基因组脱氧核糖核苷酸(DNA)可满足扩增片段长度多态性(AFLP)分析的要求。利用浙江楠Phoebe chekiangensis基因组DNA优化建立楠木AFLP反应体系如下:酶切反应300 ng基因组DNA,0.3 L缓冲液4,0.3 L牛血清白蛋白(100 BSA),50 nkat EcoR,25 nkat Mse,双蒸水加至30.0 L放置37 ℃恒温箱酶切4 h,聚合酶链式反应(PCR)仪上65 ℃15 min;连接反应20.0 L酶切产物,2.5 L T4缓冲液,666.8 nkat T4 连接酶,5 pmol EcoR接头,10 pmol Mse接头,双蒸水加至25.0 L,16 ℃连接过夜(10 ~14 h);预扩增反应2.0 L连接产物,2.0 L 10 缓冲液,31.25 nmol镁离子,16.67 nkat TaqDNA聚合酶,4 pmol脱氧核糖核苷三磷酸(dNTP),预扩增引物(E+A,M+C)各6 pmol,双蒸水加至20.0 L;选扩增反应稀释40倍的预扩产物2.0 L,2.0 L 10缓冲液,31.25 nmol镁离子,4 pmol dNTP,16.67 nkat TaqDNA聚合酶,选扩增引物(M+CNN)15 pmol,选扩增引物(E+ANN)12 pmol,双蒸水加至20.0 L。利用上面体系在64对选扩引物中筛出13对适于浙江楠AFLP分析的最佳引物组合。图5表3参24

关 键 词:林木育种学    浙江楠    紫楠    桢楠    闽楠    DNA提取    AFLP
收稿时间:2012-10-08

Optimization of an AFLP protocol with four Phoebe species
ZHOU Shengcai,HUANG Huahong,TONG Zaikang,WU Xiaolin.Optimization of an AFLP protocol with four Phoebe species[J].Journal of Zhejiang A&F University,2013,30(5):789-796.
Authors:ZHOU Shengcai  HUANG Huahong  TONG Zaikang  WU Xiaolin
Institution:1.The Nurturing Station for the State Key Laboratory of Subtropical Silviculture,Zhejiang A & F University,Lin’an 311300,Zhejiang,China;2.Experimental Forest Farm of Qingyuan County,Qingyuan 323800,Zhejiang,China
Abstract:To meet the needs of an amplified-fragment-length-polymorphism(AFLP) protocol,high quality genome DNA was extracted from Phoebe chekiangensis,Phoebe sheareri,Phoebe zhennan,and Phoebe bournei seedlings with improved cetyltrimethylammonium bromide(CTAB)methods. For optimization of restriction system(30.0 L),the genome DNA,300 ng;was buffered with 0.3 L;bovine serum albumin (BSA),0.3 L;EcoR,50 nkat;and Mse,25 nkat;and incubated at 37 C for 4 h;then the restriction enzyme was killed with 65 C for 15 min. The best ligation system(25.0 L) was with 20.0 L of the digestion products;T4 buffer,2.5 L;T4 ligase,666.8 nkat;EcoR adapter,5 pmol;and Mse adapter, 10 pmol;and left at 16 C overnight (10-14 h). The optimal preamplification system (20.0 L) included 2.0 L ligation products;10 buffer,2.0 L;Mg2+,31.25 nmol;Taq DNA polymerase;16.67 nkat;dNTP,4 pmol; pre-amplification primers(E+A),6 pmol;and pre-amplification primers(M+C),6 pmol. Also,the best selective amplification system (20.0 L) was 2.0 L,1/40 pre-amplification products;10 buffer,2.0 L; Mg2+,31.25 nmol;dNTP,4 pmol;Taq DNA polymerase,16.67 nkat;amplification primers(M+CNN),15 pmol;and amplification primers(E+ANN),12 pmol. Moreover,screening with the optimized AFLP reaction system resulted in 13 pairs of suitable amplification primers for AFLP analysis of Phoebe chekiangensis. [Ch,5 fig. 3 tab. 24 ref.]
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