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Lampisiphonia iberica gen. et sp. nov. (Ceramiales, Rhodophyta) based on morphology and molecular evidence

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Title
Lampisiphonia iberica gen. et sp. nov. (Ceramiales, Rhodophyta) based on morphology and molecular evidence
Other Titles
형태와 분자 증거에 근거한 홍조식물 비단풀목 신속 신종 Lampisiphonia iberica based on morphology and molecular evidence
Authors
Antonio Secilla
Choi, Han-Gu
Ignacia Barbara
ESTIBALIZ BERECIBAR
Jung, Moon-Yong
Seo, Tae-Kun
JOS´E MARI´A GOROSTIAGA
Pilar Diaz-Tapia
Subject
Plant Sciences; Marine & Freshwater Biology
Keywords
Iberian Peninsula; Lampisiphonia iberica; Neosiphonia; Polysiphonia; Rhodomelaceae
Issue Date
2013
Publisher
Allen Press/International Phycological Society
Citation
Antonio Secilla, et al. 2013. "Lampisiphonia iberica gen. et sp. nov. (Ceramiales, Rhodophyta) based on morphology and molecular evidence". Phycologia, 52: 137-155.
Abstract
Lampisiphonia iberica gen. et sp. nov. is described based on specimens collected from subtidal rocky bottom habitats on the Atlantic coast of the Iberian Peninsula. The new genus was distinguished by an erect habit, pseudodichotomous branching, and 9-11 pericentral cells. Plants were bright red to brown-red in colour, 3-6 cm high, firm at the base but ultimate divisions soft and flaccid. Cortication was thick but restricted to the base of large thalli. Plants were attached to the substratum by discoid holdfasts with the tips of decumbent branches reattaching by secondary discoid holdfasts or rhizoids cut off from pericentral cells. Trichoblasts and scar cells were absent and the branching was exogenous. Tetrasporangia were arranged in straight series of up to 15 segments. Sexual structures were not observed. Lampisiphonia was separated from other groups and genera of Polysiphonia sensu lato and the tribe Polysiphonieae by a combination of features that include the absence of trichoblasts and presence of a compact basal cortication. Furthermore, Lampisiphonia had tetrasporangia in a straight series, a feature to date considered unique to Polysiphonia sensu stricto. The phylogenetic relationship of Lampisiphonia among the three resolved lineages of the Polysiphonia sensu lato was equivocal in our analyses and it was not clearly distinct from the Neosiphonia group and the Multipericental grouanching, and 9-11 pericentral cells. Plants were bright red to brown-red in colour, 3-6 cm high, firm at the base but ultimate divisions soft and flaccid. Cortication was thick but restricted to the base of large thalli. Plants were attached to the substratum by discoid holdfasts with the tips of decumbent branches reattaching by secondary discoid holdfasts or rhizoids cut off from pericentral cells. Trichoblasts and scar cells were absent and the branching was exogenous. Tetrasporangia were arranged in straight series of up to 15 segments. S
URI
http://repository.kopri.re.kr/handle/201206/6495
DOI
http://dx.doi.org/10.2216/12-009.1
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