Special features of RAD Sequencing data: implications for genotyping.

Special features of RAD Sequencing data: implications for genotyping.
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DOI:
10.1111/mec.12084
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发表时间:
2013-06
期刊:
影响因子:
4.9
通讯作者:
Blaxter ML
Blaxter ML
中科院分区:
生物学1区
文献类型:
--
作者:
Davey JW;Cezard T;Fuentes-Utrilla P;Eland C;Gharbi K;Blaxter ML

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限制性酶切位点相关DNA测序(RAD-Seq)是一种经济有效的SNP发现和基因分型方法。与其他合成测序方法一样,RAD-Seq产生随机计数数据,并需要灵敏的分析来准确地开发或基因型标记。我们发现,有几个来源的偏见特定于RAD-Seq,没有明确解决目前的基因分型工具,即限制性片段的偏见,限制性位点杂合性和PCR GC含量的偏见。我们探讨了现有分析工具在这些偏差下的性能,并讨论了限制或处理RAD-Seq数据中偏差的方法。虽然这些偏差需要认真对待,但我们相信在大多数情况下,受其影响的RAD基因座可以被排除或相对容易地处理,并且大多数RAD基因座将通过现有工具进行准确的基因分型。
Restriction site-associated DNA Sequencing (RAD-Seq) is an economical and efficient method for SNP discovery and genotyping. As with other sequencing-by-synthesis methods, RAD-Seq produces stochastic count data and requires sensitive analysis to develop or genotype markers accurately. We show that there are several sources of bias specific to RAD-Seq that are not explicitly addressed by current genotyping tools, namely restriction fragment bias, restriction site heterozygosity and PCR GC content bias. We explore the performance of existing analysis tools given these biases and discuss approaches to limiting or handling biases in RAD-Seq data. While these biases need to be taken seriously, we believe RAD loci affected by them can be excluded or processed with relative ease in most cases and that most RAD loci will be accurately genotyped by existing tools.
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