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Citation for Study 1226

About Citation title: "DNA Taxonomy: The Riddle of Oxychlo? (Juncaceae).".
About This study was previously identified under the legacy study ID S1140 (Status: Published).

Citation

Kristiansen K., Cilieborg M., Dr?bkov? L., J?rgensen T., Petersen G., & Seberg O. 2005. DNA Taxonomy: The Riddle of Oxychlo? (Juncaceae). Systematic Botany, 30(2): 284-289.

Authors

  • Kristiansen K.
  • Cilieborg M.
  • Dr?bkov? L.
  • J?rgensen T.
  • Petersen G. Phone 4535322194
  • Seberg O. Phone +45 3532 2195

Abstract

Recently, advocates of DNA taxonomy have complained that there is no control of the taxonomy in e.g. GenBank. This is correct, but the uncertainty may be extended to the sequences themselves. The present study shows as long as vouchers are available neither problem is fatal, but if no voucher exists bad sequences and bad taxonomy may be forever linked. Previous phylogenetic analyses of rbcL sequences have indicated that the small, south hemispheric, genus Oxychlo? (Juncaceae) surprisingly either is embedded within or sister group to the Cyperaceae. This is not in accordance with traditional or current morphological data. By studying five new accessions, representing four species of Oxychlo?, and re-examining the two vouchers of the species, O. andina, previously used in phylogenies it has been possible to show that these two sequences are erroneous. One being a chimeric sequence and the other most likely contaminated.

About this resource

  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S1226
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