Home Phylogenetic relationships of Pakistan Gelidium (Gelidiales, Rhodophyta) species with recognition of Gelidium pakistanicum stat. nov.
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Phylogenetic relationships of Pakistan Gelidium (Gelidiales, Rhodophyta) species with recognition of Gelidium pakistanicum stat. nov.

  • D. Wilson Freshwater

    D. Wilson Freshwater is a researcher at the Center for Marine Science, University of North Carolina Wilmington. His current research interests include molecular phylogeny and taxonomy of marine algae, marine floristics and ecology of marine hard bottom communities.

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    and Laila Shahnaz

    Laila Shahnaz is an Associate Professor in the Department of Botany, University of Karachi. She received her PhD degree in Botany from the University of Karachi and completed a Post-Doc at the GEOMAR-Helmholtz Centre for Ocean Research in Kiel. Her research interests include seaweed and mangrove biology, phycochemistry, and bioactive compounds.

Published/Copyright: March 15, 2019

Abstract

Two species of Gelidium, Gelidium usmanghanii and Gelidium pusillum var. pakistanicum are reported only from Pakistan, but their taxonomic status, phylogenetic relationships, and distributions have not been assessed with molecular data. Analysis of rbcL sequences revealed that G. usmanghanii was a distinct species with a distribution extending at least to the coast of Oman. This analysis also resolved G. pusillum var. pakistanicum within a Gelidium millariana species complex that was distantly related to G. pusillum. Further analyses of rbcL and COI-5P sequences showed that G. pusillum var. pakistanicum was a distinct species in this complex, and based on these molecular, and previous morphological results, this variety is elevated to the rank of species as Gelidium pakistanicum stat. nov.

About the authors

D. Wilson Freshwater

D. Wilson Freshwater is a researcher at the Center for Marine Science, University of North Carolina Wilmington. His current research interests include molecular phylogeny and taxonomy of marine algae, marine floristics and ecology of marine hard bottom communities.

Laila Shahnaz

Laila Shahnaz is an Associate Professor in the Department of Botany, University of Karachi. She received her PhD degree in Botany from the University of Karachi and completed a Post-Doc at the GEOMAR-Helmholtz Centre for Ocean Research in Kiel. Her research interests include seaweed and mangrove biology, phycochemistry, and bioactive compounds.

Acknowledgments

The authors thank Professors Michael J. Wynne and the late Mustafa Shameel for their support and suggestions, and Paul W. Gabrielson and two anonymous reviewers for valuable comments on earlier versions of the manuscript. This study was funded by US National Science Foundation Biotic Surveys and Inventories grant 0743334 and the Center for Marine Science DNA-Algal Trust.

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Supplementary Material

The online version of this article offers supplementary material (https://doi.org/10.1515/bot-2018-0121).


Received: 2018-12-28
Accepted: 2019-02-15
Published Online: 2019-03-15
Published in Print: 2019-04-24

©2019 Walter de Gruyter GmbH, Berlin/Boston

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