@ARTICLE{TreeBASE2Ref29393, author = {Ruth Del Prado and Kawinnat Buaruang and H. Thorsten Lumbsch and Ana Crespo and Pradeep Kumar Divakar}, title = {DNA sequence-based identification and barcoding of a morphologically highly plastic lichen forming fungal genus (Parmotrema, Parmeliaceae) from tropics}, year = {2019}, keywords = {Conservation, cryptic species, genetic distances, lichenized fungi, parmelioids, phylogeny, rainforest, Thailand}, doi = {}, url = {http://}, pmid = {}, journal = {The Bryologist}, volume = {}, number = {}, pages = {}, abstract = {Tropical regions harbour rich biodiversity but are relatively poorly explored, especially in lesser known taxonomic groups, such as lichenized fungi. In addition, the identification of species is complicated by frequent occurrence of cryptic species and the plasticity of phenotypic features traditionally used to identify species. Here, we aim to explore species diversity and provide tools for accurate sample identification of the genus Parmotrema from rainforests in Thailand. We gathered a three-locus DNA sequence data set and these were analysed in phylogenetic and DNA barcode frameworks. While some morpho-species were recovered as monophyletic, others did not form monophyletic groups. Our study unmasked cryptic lineages in Parmotrema species distributed in tropics and show that phenotype-based sample identification may underestimate species diversity in this group of lichens. Further, genetic distances based on ITS DNA sequences (i.e. DNA barcode approach) were shown to be a valuable tool for sample identification. In addition, our study highlights the need of taxonomic re-examination of the following phenotypically delimited species: P. corniculans, P. crinitum, P. haitiense, P. maclayanum, P. perlatum and P. subtinctorium. } }

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