Zhang Huchen, Xu Weiwei, Feng Zhiyang, Hong Zhi
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023 China.
College of Food Science and Technology, Nanjing Agriculture University, Nanjing, 210095 China.
3 Biotech. 2018 Jan;8(1):14. doi: 10.1007/s13205-017-1032-y. Epub 2017 Dec 11.
We employed hi-TAIL-PCR to identify T-DNA loci in our activation tagging library and only a total of 28 (39%) insertion sites from 72 samples were characterized when the recommended primer pools, C1 and C2 were used. By comparison, we found C1 harboring relatively low degeneracy was more efficient to amplify the flanking sequences of T-DNA insertion than C2. We replaced the degenerate sequences in long arbitrary degenerate (LAD) primers with a piece of 16-bp degenerate sequence originally used in TAIL-PCR, which had the relatively low degeneracy. Our results showed that the new LAD primer pool N increased the valid amplifications and a total of 37 (51%) T-DNA loci were identified, indicating a more effective amplification of T-DNA flanking sequences in .
我们采用热不对称交错PCR(hi-TAIL-PCR)来鉴定激活标签文库中的T-DNA位点,当使用推荐的引物池C1和C2时,72个样本中总共只有28个(39%)插入位点得到了表征。相比之下,我们发现简并度相对较低的C1比C2更有效地扩增T-DNA插入的侧翼序列。我们用一段最初用于TAIL-PCR的16个碱基对的简并序列替换了长任意简并(LAD)引物中的简并序列,该序列简并度相对较低。我们的结果表明,新的LAD引物池N增加了有效扩增,共鉴定出37个(51%)T-DNA位点,表明其在扩增T-DNA侧翼序列方面更有效。