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  • Title: Tailoring high-density oligonucleotide arrays for transcript profiling of different Arabidopsis thaliana accessions using a sequence-based approach.
    Author: Boudichevskaia A, Cao HX, Schmidt R.
    Journal: Plant Cell Rep; 2017 Aug; 36(8):1323-1332. PubMed ID: 28534065.
    Abstract:
    Excluding polymorphic probes from GeneChip ® transcript profiling experiments via a sequence-based approach results in improved detection of differentially expressed genes in developing seeds of Arabidopsis thaliana accessions Col-0 and C24. GeneChip® arrays represent a powerful tool for transcript profiling experiments. The ATH1 GeneChip® has been designed based on the sequence of the Arabidopsis thaliana reference genome Col-0, hence the features on the array exactly match the sequences of Col-0 transcripts. In contrast, transcripts of other A. thaliana accessions or related species may show nucleotide differences and/or insertions/deletions when compared to the corresponding Col-0 transcripts, therefore, comparisons of transcript abundance involving different A. thaliana accessions or related species may be compromised for a certain number of transcripts. To tackle this limitation, a sequence-based strategy was developed. Only features on the array that were identical in sequence for the specimen to be compared were considered for transcript profiling. The impact of the proposed strategy was evaluated for transcript profiles that were established for developing seeds of A. thaliana accessions Col-0 and C24.
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