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The Quest for a General and Reliable Fungal DNA Barcode

DNA sequences are key elements for both identification and classification of living organisms. Mainly for historical reasons, a limited number of genes are currently used for this purpose. From a mathematical point of view, any DNA segment, at any location, even outside of coding regions and even if they do not align, could be used as long as PCR primers could be designed to amplify them. This paper describes two methods to search genomic data for the most efficient DNA segments that can be used for identification and classification.