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Phylogenetic relationships among lineages of the Ceramiaceae (Ceramiales, Rhodophyta) based on nuclear small subunit rDNA sequence data

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Title
Phylogenetic relationships among lineages of the Ceramiaceae (Ceramiales, Rhodophyta) based on nuclear small subunit rDNA sequence data
Other Titles
핵의 SSU rDNA 염기서열 자료에 근거한 홍조 비단풀과의 계통학적 유연관계
Authors
Gerald T. Kraft
Choi, Han-Gu
Gary W. Saunders
Michael D. Guiry
Kim, Hyung-Seop
Subject
Plant Sciences; Marine & Freshwater Biology
Keywords
Ceramiaceae; Inkyuleeaceae fam. nov.; Rhodophyta; phylogeny; systematics
Issue Date
2008
Publisher
Blackwell
Phycological Society of America
Citation
Gerald T. Kraft, et al. 2008. "Phylogenetic relationships among lineages of the Ceramiaceae (Ceramiales, Rhodophyta) based on nuclear small subunit rDNA sequence data". Journal of Phycology, 44(4): 1033-1048.
Abstract
Phylogenetic relationships among 69 species of the Ceramiales (51 Ceramiaceae, six Dasyaceae, seven Delesseriaceae and five Rhodomelaceae) were determined based on nuclear small subunit (SSU) rDNA sequence data. We resolved five strongly supported but divergent lineages among the included Ceramiaceae: i) the genus Inkyuleea, which weakly joins other orders of the Rhodymeniophycidae rather than the Ceramiales in our analyses;ii) the tribe Spyridieae, which is sister to the remainder of the included ceramialean taxa;iii) the subfamily Ceramioideae, weakly including the tribe Warrenieae;iv) the subfamily Callithamnioideae;and v) the subfamily Compsothamnioideae, which emerges as sister to the Dasyaceae/ Delesseriaceae/Rhodomelaceae complex, thus rendering the Ceramiaceae sensu lato unequivocally paraphyletic, as has been separately argued on anatomical grounds by Kylin and Hommersand. Our data support a restricted concept of the Ceramiaceae that includes only one of the five lineages (Ceramioideae) that we have resolved. In addition to failing to ally with the Ceramiales in our molecular analyses, species of Inkyuleea also differ substantially from other Ceramiaceae sensu lato in details of pre- and postfertilization development. The genus Inkyuleea is here assigned to the Inkyuleeaceae fam. nov., which we provisionally retain in the Ceramiales. Species of Spyridia also differ from the remaining Ceramiaceae in their postfertilization development and, in light of our molecular data, the genus Spyridia is assigned to the Spyridiaceae J. Agardh. The Callithamnioideae is strongly monophyletic (100% in all analyses), which, in combination with key anatomical differences, supports elevation to family status for this lineage as the Callithamniaceae K?tzing. Similarly, the Compsothamnioideae is solidly monophyletic in our molecular trees and has a unique suite of defining anatomical characters that supports family status for a complex that we consider includes
URI
http://repository.kopri.re.kr/handle/201206/6411
DOI
http://dx.doi.org/10.1111/j.1529-8817.2008.00554.x
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