Abstract
Recent phylogenetic studies of the genus Pterosiphonia suggest that Pterosiphonia dendroidea and Pterosiphonia tanakae are conspecific and show its wide geographic distribution in the Pacific. Pterosiphonia dendroidea was originally described as Polysiphonia dendroidea from Peru and later transferred to Pterosiphonia. Pterosiphonia dendroidea was characterized by diagnostic features such as its light cortication, the presence of trichoblasts, 8–12 pericentral cells, branches with the production of 3- to 5-order laterals, and congenital fusion of 2–3 segments. Pterosiphonia tanakae shares these features. Our phylogenetic analysis using rbcL sequences reveals a low gene sequence divergence (0.5%–0.7%) between the samples of P. dendroidea and P. tanakae. We propose that P. tanakae is a later synonym of P. dendroidea, and our study indicates the wide distribution of P. dendroidea in the northern and the southern Pacific Ocean.
Funding source: Ministry of Education
Award Identifier / Grant number: 20150634
Funding statement: We thank Martha S. Calderon for providing some material of Pterosiphonia dendroidea from Peru. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (20150634); the Marine Biotechnology Program grant (PJT200519 and PJT200669) funded by the Ministry of Oceans and Fisheries, Korea; the research fund Chosun University 2015 to Tae Oh Cho.
About the authors
Danilo E. Bustamante is pursuing postdoctoral research in the Department of Life Science, Chosun University, Korea. He obtained his BS in Biological Sciences from the National University of San Marcos (UNMSM), Peru. His PhD was awarded in marine algal phylogeny by Chosun University, Korea. His research interests include taxonomy, phylogeny, phylogeography, and evolution of macroalgae, focusing on Polysiphonia sensu lato.
Boo Yeon Won is a visiting professor in the Department of Life Science, Chosun University, Korea. Her PhD was awarded in environmental and evolutionary biology by University of Louisiana at Lafayette, focusing on three tribes, Ceramieae, Antithamnieae, and Spyridieae in Ceramiaceae (Rhodophyta). Her main research interests are algal systematics and seaweed biogeography.
Tae Oh Cho is a professor in the Department of life Science, Chosun University, Korea. He was awarded a PhD by the Department of Biology, Chungnam National University, focusing on taxonomy and phylogeny of the red algal genus Ceramium. His research focus is on taxonomy, phylogeny, phylogeography, and evolution of macroalgae. His main research interests are also applied to the biodiversity and conservation of macroalgae.
Acknowledgments
We thank Martha S. Calderon for providing some material of Pterosiphonia dendroidea from Peru. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (20150634); the Marine Biotechnology Program grant (PJT200519 and PJT200669) funded by the Ministry of Oceans and Fisheries, Korea; the research fund Chosun University 2015 to Tae Oh Cho.
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