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2009•Proceedings of the National Academy of SciencesOpen access

A DNA barcode for land plants

CBOL Plant Working Group1, Peter M. Hollingsworth, Laura L. Forrest, John L. Spouge, Mehrdad Hajibabaei, Sujeevan Ratnasingham, Michelle van der Bank, Mark W. Chase, Robyn S. Cowan, David L. Erickson, Aron J. Fazekas, Sean W. Graham, Karen E. James, Ki-Joong Kim, W. John Kress, Harald Schneider, Jonathan Van Alphen-Stahl, Spencer C. H. Barrett, Cássio van den Berg, Diego Bogarín, Kevin S. Burgess, Kenneth M. Cameron, Mark A. Carine, Juliana Chacón, Alexandra Clark, James J. Clarkson, Ferozah Conrad, Dion S. Devey, C. S. Ford, Terry A. Hedderson, Michelle L. Hollingsworth, Brian C. Husband, Laura J. Kelly, Prasad Kesanakurti, Jung Sung Kim, Young‐Dong Kim, Renaud Lahaye, Hae-Lim Lee, David G. Long, Santiago Madriñán, Olivier Maurin, Isabelle Meusnier, Steven G. Newmaster, Chong-Wook Park, Diana M. Percy, Gitte Petersen, James Richardson, Gerardo A. Salazar, Vincent Savolainen, Ole Seberg, M. J. Wilkinson, Dong‐Keun Yi, Damon P. Little

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Abstract

DNA barcoding involves sequencing a standard region of DNA as a tool for species identification. However, there has been no agreement on which region(s) should be used for barcoding land plants. To provide a community recommendation on a standard plant barcode, we have compared the performance of 7 leading candidate plastid DNA regions (atpF-atpH spacer, matK gene, rbcL gene, rpoB gene, rpoC1 gene, psbK-psbI spacer, and trnH-psbA spacer). Based on assessments of recoverability, sequence quality, and levels of species discrimination, we recommend the 2-locus combination of rbcL+matK as the plant barcode. This core 2-locus barcode will provide a universal framework for the routine use of DNA sequence data to identify specimens and contribute toward the discovery of overlooked species of land plants.

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What this paper is about

DNA barcoding involves sequencing a standard region of DNA as a tool for species identification. However, there has been no agreement on which region(s) should be used for barcoding land plants. To provide a community recommendation on a standard plant barcode, we have compared the performance of 7 leading candidate plastid DNA regions (atpF-atpH spacer, matK gene, rbcL gene, rpoB gene, rpoC1 gene, psbK-psbI spacer, and trnH-psbA spacer). Based on assessments of recoverability, sequence quality, and levels of species discrimination, we recommend the 2-locus combination of rbcL+matK as the plant barcode. This core 2-locus barcode will provide a universal framework for the routine use of DNA sequence data to identify specimens and contribute toward the discovery of overlooked species of land plants.

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Available abstract

DNA barcoding involves sequencing a standard region of DNA as a tool for species identification. However, there has been no agreement on which region(s) should be used for barcoding land plants. To provide a community recommendation on a standard plant barcode, we have compared the performance of 7 leading candidate plastid DNA regions (atpF-atpH spacer, matK gene, rbcL gene, rpoB gene, rpoC1 gene, psbK-psbI spacer, and trnH-psbA spacer). Based on assessments of recoverability, sequence quality, and levels of species discrimination, we recommend the 2-locus combination of rbcL+matK as the plant barcode. This core 2-locus barcode will provide a universal framework for the routine use of DNA sequence data to identify specimens and contribute toward the discovery of overlooked species of land plants.

Key concepts: Barcode, DNA barcoding, rpoB, Biology, Gene, Locus (genetics), DNA sequencing, Genetics

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