title: LAURENCIA MARILZAE SP. NOV. (CERAMIALES, RHODOPHYTA) FROM THE CANARY ISLANDS, SPAIN, BASED ON MORPHOLOGICAL AND MOLECULAR EVIDENCE(1).
abstract: Laurencia marilzae Gil-Rodríguez, Sentíes et M.T. Fujii sp. nov. is described based on specimens that have been collected from the Canary Islands. This new species is characterized by distinctive yellow-orange as its natural habitat color, a terete thallus, four pericentral cells per vegetative axial segment, presence of secondary pit-connections between adjacent cortical cells, markedly projecting cortical cells, and also by the presence of corps en cerise (one per cell) present in all cells of the thallus (cortical, medullary, including pericentral and axial cells, and trichoblasts). It also has a procarp-bearing segment with five pericentral cells and tetrasporangia that are produced from the third and fourth pericentral cells, which are arranged in a parallel manner in relation to fertile branchlets. The phylogenetic position of this taxon was inferred based on chloroplast-encoded rbcL gene sequence analyses. Within the Laurencia assemblage, L. marilzae formed a distinctive lineage sister to all other Laurencia species analyzed. Previously, a large number of unique diterpenes dactylomelane derivatives were isolated and identified from this taxon. L. marilzae is morphologically, genetically, and chemically distinct from all other related species of the Laurencia complex described.
authors.affiliation: Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Tenerife, Islas Canarias, SpainDepartamento de Hidrobiología, Universidad Autónoma Metropolitana-Iztapalapa, A.P. 55-535, Mexico, D.F. 09340, MexicoDepartamento de Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro 20550-013, BrazilInstituto de Botânica, Av. Miguel Estéfano, 3687, 04301-012 São Paulo, Brazil.
authors.forename: M A Candelaria
authors.initials: MA
authors.lastname: Gil-Rodríguez
authors.affiliation: Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Tenerife, Islas Canarias, SpainDepartamento de Hidrobiología, Universidad Autónoma Metropolitana-Iztapalapa, A.P. 55-535, Mexico, D.F. 09340, MexicoDepartamento de Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro 20550-013, BrazilInstituto de Botânica, Av. Miguel Estéfano, 3687, 04301-012 São Paulo, Brazil.
authors.forename: Abel
authors.initials: A
authors.lastname: Sentíes
authors.affiliation: Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Tenerife, Islas Canarias, SpainDepartamento de Hidrobiología, Universidad Autónoma Metropolitana-Iztapalapa, A.P. 55-535, Mexico, D.F. 09340, MexicoDepartamento de Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro 20550-013, BrazilInstituto de Botânica, Av. Miguel Estéfano, 3687, 04301-012 São Paulo, Brazil.
authors.forename: Jhoana
authors.initials: J
authors.lastname: Díaz-Larrea
authors.affiliation: Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Tenerife, Islas Canarias, SpainDepartamento de Hidrobiología, Universidad Autónoma Metropolitana-Iztapalapa, A.P. 55-535, Mexico, D.F. 09340, MexicoDepartamento de Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro 20550-013, BrazilInstituto de Botânica, Av. Miguel Estéfano, 3687, 04301-012 São Paulo, Brazil.
authors.forename: Valéria
authors.initials: V
authors.lastname: Cassano
authors.affiliation: Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Tenerife, Islas Canarias, SpainDepartamento de Hidrobiología, Universidad Autónoma Metropolitana-Iztapalapa, A.P. 55-535, Mexico, D.F. 09340, MexicoDepartamento de Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro 20550-013, BrazilInstituto de Botânica, Av. Miguel Estéfano, 3687, 04301-012 São Paulo, Brazil.
authors.forename: Mutue Toyota
authors.initials: MT
authors.lastname: Fujii
keywords: Canary Islands; Laurencia marilzae; Rhodomelaceae; molecular phylogeny; taxonomy