Anna-Giulia Fara

Publications (2)2.45 Total impact

• Article: Allele-specific PCR in SNP genotyping.

  Muriel Gaudet, Anna-Giulia Fara, Isacco Beritognolo, Maurizio Sabatti
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  ABSTRACT: The increasing need for large-scale genotyping applications of single nucleotide polymorphisms (SNPs) in model and nonmodel organisms requires the development of low-cost technologies accessible to minimally equipped laboratories. The method presented here allows efficient discrimination of SNPs by allele-specific PCR in a single reaction with standard PCR conditions. A common reverse primer and two forward allele-specific primers with different tails amplify two allele-specific PCR products of different lengths, which are further separated by agarose gel electrophoresis. PCR specificity is improved by the introduction of a destabilizing mismatch within the 30 end of the allele-specific primers. This is a simple and inexpensive method for SNP detection that does not require PCR optimization.
  Methods in molecular biology (Clifton, N.J.) 01/2009; 578:415-24.
• Article: Single-reaction for SNP Genotyping on Agarose Gel by Allele-specific PCR in Black Poplar ( Populus nigra L.)

  Muriel Gaudet, Anna-Giulia Fara, Maurizio Sabatti, Elena Kuzminsky, Giuseppe Scarascia Mugnozza
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  ABSTRACT: The wide development of single nucleotide polymorphism (SNP) markers also in non-model species increases the need for inexpensive methods that do not require sophisticated equipment and time for optimization. This work presents a new method for polymerase chain reaction (PCR) amplification of multiple specific alleles (PAMSA), which allows efficient discrimination of SNP polymorphisms in one reaction tube with standard PCR conditions. This improved PAMSA requires only three unlabeled primers: a common reverse primer and two allele-specific primers having a tail of different length to differentiate the two SNP alleles by the size of amplification products on agarose gel. A destabilizing mismatch within the five bases of the 3′ end is also added to improve the allele specificity. To validate the accuracy of this method, 94 full-sib individuals were genotyped with three SNPs and compared to the genotypes obtained by cleaved amplified polymorphic sequence (CAPS) or derived CAPS. This method is flexible, inexpensive, and well suited for high throughput and automated genotyping.
  Plant Molecular Biology Reporter 01/2007; 25(1):1-9. · 2.45 Impact Factor