期刊
JOURNAL OF PHYCOLOGY
卷 47, 期 4, 页码 904-910出版社
WILEY
DOI: 10.1111/j.1529-8817.2011.01005.x
关键词
Gelidium; Gelidium eucorneum sp nov.; mitochondrial cox1; morphology; plastid genes; psaA; rbcL; Rhodophyta; systematics
资金
- Ministry of Maritime Affairs Fisheries
- National Fisheries Research and Development Institute [RP-2010-AQ-071]
Gelidium is an economically and ecologically important agar-producing genus. Although the taxonomy of Gelidium has been the focus of many published studies, there is still a need to reevaluate species-level diversity. Herein, we describe Gelidium eucorneum sp. nov. based on specimens collected off Geojedo on the southern coast of Korea. G. eucorneum is distinguished by cartilaginous thalli with brushlike haptera, rhizoidal filaments concentrated in the medulla, and globose cytocarps that are horned with multiple determinate branchlets. The species occurs in wave-exposed intertidal sites, sometimes in association with other mat-forming algae. Phylogenetic analyses (rbcL, psaA, and cox1) reveal that G. eucorneum is unique and clearly distinct from other species of the genus. The clade containing Gelidium vagum and Acanthopeltis longiramulosa was resolved as a sister group to G. eucorneum. We suggest that the diverse morphologies of G. eucorneum, G. vagum, and Acanthopeltis developed from a common ancestor in East Asian waters. This study shows that even in well-studied areas, more agarophyte species are to be added to the world inventory of red algae.
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