Molecular systematics of Ceramium and Centroceras (Ceramiaceae, Rhodophyta) from Brazil

Authors: De Barros-Barreto, M.B., McIvor, L., Maggs, C.A. and Gomes Ferreira, P.C.

Journal: Journal of Phycology

Volume: 42

Issue: 4

Pages: 905-921

eISSN: 1529-8817

ISSN: 0022-3646

DOI: 10.1111/j.1529-8817.2006.00237.x

Abstract:

Morphological investigations identified 11 Ceramium Roth species, of the 18 previously reported from Brazil. Phylogenetic analyses of sequences of the chloroplast-encoded rbcL, gene confirmed the presence of seven of these species. Three other species are reported from Brazil for the first time. Ceramium affine Setchell & Gardner and C. filicula Harvey ex Womersley were previously known only from the Pacific Ocean (Mexico and Australia, respectively). A new species, C. fujianum Barros-Barreto et Maggs sp. nov., is described here. Its general habit is similar to that of C. strictum sensu Harvey from Europe but it has one less periaxial cell than C. strictum; its cortical filament arrangement is closest to C. deslongchampsii Chauvin ex Duby, also from Europe, but whorled tetrasporangia partially covered by cortical cells differ strikingly from the naked protruding tetrasporangia of C. deslongchampsii. Ceramium species in which each periaxial cell cuts off transversely only a single basipetal cell formed a robust clade. The genus Ceramium as represented in Brazil is not monophyletic with respect to Centroceras Kützing and Corallophila Weber-van Bosse; Ceramium nitens, which has axial cells completely covered by rounded cortical cells formed by aeropetal and basipetal filaments, did not group with any Ceramium clade but was weakly allied to a species of Corallophila. All three Brazilian Centroceras sequences were attributed to a single species, C. clavulatum. © 2006 by the Phycological Society of America.

Source: Scopus

Molecular systematics of <i>Ceramium</i> and <i>Centroceras</i> (Ceramiaceae, Rhodophyta) from Brazil

Authors: de Barros-Barreto, M.B., McIvor, L., Maggs, C.A. and Gomes Ferreira, P.C.

Journal: JOURNAL OF PHYCOLOGY

Volume: 42

Issue: 4

Pages: 905-921

eISSN: 1529-8817

ISSN: 0022-3646

DOI: 10.1111/j.1529-8817.2006.00237.x

Source: Web of Science (Lite)