Nucleic acids extracted from strawberry tissues following the Mazzara and James (2000) protocol, as well as the one
proposed in this report, revealed the simultaneous presence of both intact ribosomal RNA and genomic DNA bands.
However, RNA extracted with either Trizol or the LiCl-based protocol could not be used in downstream applications, since the amplification of FaGAPDH from these templates failed (data not shown), probably due to high amounts of inhibitory
polysaccharides (Demeke and Adams, 1992) and/or polyphenols (Moreira, 1998).