Caragnano Annalisa, Foetisch A., Maneveldt G. W., Millet L., Liu L. C., Lin S. M., Rodondi G., Payri Claude. (2018). Revision of Corallinaceae (Corallinales, Rhodophyta) : recognizing Dawsoniolithon gen. nov., Parvicellularium gen. nov and Chamberlainoideae subfam. nov containing Chamberlainium gen. nov. and pneophyllum. Journal of Phycology, 54 (3), p. 391-409. ISSN 0022-3646.
Titre du document
Revision of Corallinaceae (Corallinales, Rhodophyta) : recognizing Dawsoniolithon gen. nov., Parvicellularium gen. nov and Chamberlainoideae subfam. nov containing Chamberlainium gen. nov. and pneophyllum
Année de publication
2018
Auteurs
Caragnano Annalisa, Foetisch A., Maneveldt G. W., Millet L., Liu L. C., Lin S. M., Rodondi G., Payri Claude
Source
Journal of Phycology, 2018,
54 (3), p. 391-409 ISSN 0022-3646
A multi-gene (SSU, LSU, psbA, and COI) molecular phylogeny of the family Corallinaceae (excluding the subfamilies Lithophylloideae and Corallinoideae) showed a paraphyletic grouping of six monophyletic clades. Pneophyllum and Spongites were reassessed and recircumscribed using DNA sequence data integrated with morpho-anatomical comparisons of type material and recently collected specimens. We propose Chamberlainoideae subfam. nov., including the type genus Chamberlainium gen. nov., with C.tumidum comb. nov. as the generitype, and Pneophyllum. Chamberlainium is established to include several taxa previously ascribed to Spongites, the generitype of which currently resides in Neogoniolithoideae. Additionally we propose two new genera, Dawsoniolithon gen. nov. (Metagoniolithoideae), with D.conicum comb. nov. as the generitype and Parvicellularium gen. nov. (subfamily incertae sedis), with P.leonardi sp. nov. as the generitype. Chamberlainoideae has no diagnostic morpho-anatomical features that enable one to assign specimens to it without DNA sequence data, and it is the first subfamily to possess both Type 1 (Chamberlainium) and Type 2 (Pneophyllum) tetra/bisporangial conceptacle roof development. Two characters distinguish Chamberlainium from Spongites: tetra/biasporangial conceptacle chamber diameter (<300m in Chamberlainium vs. >300m in Spongites) and tetra/bisporangial conceptacle roof thickness (<8 cells in Chamberlainium vs. >8 cells in Spongites). Two characters also distinguish Pneophyllum from Dawsoniolithon: tetra/bisporangial conceptacle roof thickness (<8 cells in Pneophyllum vs. >8 cells in Dawsoniolithon) and thallus construction (dimerous in Pneophyllum vs. monomerous in Dawsoniolithon).
Plan de classement
Limnologie biologique / Océanographie biologique [034]
Description Géographique
OCEAN INDIEN ; PACIFIQUE
Localisation
Fonds IRD [F B010073174]
Identifiant IRD
fdi:010073174
