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Phylogenetic congruence of ribosomal operon and plastid gene sequences for the Characeae with an emphasis on Tolypella (Characeae, Charophyceae)
Journal article   Peer reviewed

Phylogenetic congruence of ribosomal operon and plastid gene sequences for the Characeae with an emphasis on Tolypella (Characeae, Charophyceae)

William Perez, Michele T. Casanova, John D. Hall, Richard M. McCourt and Kenneth G. Karol
Phycologia (Oxford), v 56(2), pp 230-237
01 Jan 2017

Abstract

Life Sciences & Biomedicine Marine & Freshwater Biology Plant Sciences Science & Technology
To clarify species diversity of Tolypella (Characeae, Charophyceae) and the relationship between Tolypella and other genera in Characeae, sequence data from the nuclear ribosomal operon were assembled for 18 individuals of Tolypella. These represented nine named species and two potentially new species from Australia, as well as 13 other taxa of Characeae. Phylogenetic analyses were performed on ribosomal gene sequences (18S, 5.8S and 28S) for Characeae and on ribosomal gene and internal transcribed spacer (ITS) sequences (ribosomal genes + ITS1 + ITS2) for Tolypella. Analyses were also performed on the ribosomal gene and ITS sequences combined with plastid gene sequences (atpB, psbC and rbcL). Ribosomal gene sequences alone were conservative and their phylogenetic analyses resulted in topologies similar to a previously published plastid gene-based study but with less support and resolution. In contrast, ITS sequences showed greater variability and their addition resulted in greater resolution among some species relationships of Tolypella. The addition of plastid sequences also resulted in greater support and increased resolution in some lineages but not all.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Marine & Freshwater Biology
Plant Sciences
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