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Front Plant Sci. 2012 Jun 28;3:133. doi: 10.3389/fpls.2012.00133. eCollection 2012.

The quest for rare variants: pooled multiplexed next generation sequencing in plants.

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Istituto di Genomica Applicata, Udine, Italy.


Next generation sequencing (NGS) instruments produce an unprecedented amount of sequence data at contained costs. This gives researchers the possibility of designing studies with adequate power to identify rare variants at a fraction of the economic and labor resources required by individual Sanger sequencing. As of today, few research groups working in plant sciences have exploited this potentiality, showing that pooled NGS provides results in excellent agreement with those obtained by individual Sanger sequencing. The aim of this review is to convey to the reader the general ideas underlying the use of pooled NGS for the identification of rare variants. To facilitate a thorough understanding of the possibilities of the method, we will explain in detail the possible experimental and analytical approaches and discuss their advantages and disadvantages. We will show that information on allele frequency obtained by pooled NGS can be used to accurately compute basic population genetics indexes such as allele frequency, nucleotide diversity, and Tajima's D. Finally, we will discuss applications and future perspectives of the multiplexed NGS approach.


barcode; multiplex; next generation sequencing; nucleotide diversity; plants; polymerase; pool; rare variants

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