Taxonomy of Grateloupia (Halymeniales, Rhodophyta) by DNA barcode marker analysis and a description of Pachymeniopsis volvita sp. nov.
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We applied DNA barcoding analysis to the red alga Grateloupia because it is one of the most complicated taxa in the family Halymeniaceae. We used two DNA barcoding markers, the 5′ end of the cytochrome c oxidase I gene and the universal plastid amplicon of the 23S rRNA gene, to define levels of genetic diversity and species relationships within rbcL phylogeny. We detected nine species of Grateloupia, four species of Pachymeniopsis, and one Kintokiocolax in Korea: G. angusta, G. asiatica, G. catenata, G. divaricata, G. imbricata, G. jejuensis, G. kurogii, G. subpectinata, G. turuturu, P. elliptica, P. gargiuli, P. lanceolata, a new species, and K. aggregato-cerantha. The COI-5P barcode successfully differentiated species, with interspecific divergence values ranging between 3.7 and 14 %. Barcoding data provided a rapid and accurate methodology for species-level identification and for taxonomic explorations when used in combination with morphological data. We describe Pachymeniopsis volvita sp. nov. based on DNA barcoding analysis. Fourteen species detected in four different subclades with strong bootstrap support within rbcL phylogenetic tree.
KeywordsDNA barcoding Genetic diversity Grateloupia Pachymeniopsis Rhodophyta Taxonomy
We thank Mr. J.C. Kang for collecting samples from the subtidal and other members of the molecular phylogeny of marine algae laboratory at Jeju National University. This study was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR No. 2013-02-001 for collecting samples and NIBR No. 2012-02-042 for molecular phylogeny of Korean major taxa).
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