Comparative morphology and systematics of Chondrymenia lobata from the Mediterranean Sea and a phylogeny of the Chondrymeniaceae fam. nov. (Rhodophyta) based on rbcL sequence analyses
dc.contributor.author
dc.date.accessioned
2016-04-12T13:25:48Z
dc.date.available
2016-04-12T13:25:48Z
dc.date.issued
2013-05-01
dc.identifier.issn
0967-0262
dc.identifier.uri
dc.description.abstract
The Chondrymeniaceae Rodríguez-Prieto, G. Sartoni, S.-M. Lin & Hommersand, fam. nov., is proposed for Chondrymenia lobata. Analyses of rbcL sequences place the new family in a large gigartinalean assemblage that comprises the Cystocloniaceae-Solieriaceae complex. Plants are decumbent and growth takes place by division of multiple apical cells at the margin of the blade. Thalli consist of an outer cortex of subspherical to elongate cortical cells arranged in anticlinal rows, a subcortex of cells cross-linked by lateral arms, and a large central medulla composed of primary medullary filaments intermixed with numerous rhizoidal filaments. Male stages are reported in monoecious individuals. Inactive carpogonial branches consist of a two-celled filament that is directed inwards from the supporting cell. Functional carpogonial branches are oriented outwardly, with the carpogonia and trichogynes pointed towards the thallus surface. After presumed fertilization, the carpogonium fuses with the hypogynous cell and transfers the zygote nucleus. The hypogynous cell, in turn, fuses with the supporting cell which contains many haploid nuclei. The resulting fusion cell functions as an auxiliary cell that cuts off a single gonimoblast initial, which produces the gonimoblast filaments. Gametophytic cells close to the auxiliary cell unite with it to form a placental fusion network of variable size and outline, and a placental fusion cell. Proximal gonimoblast cells fuse with the placental fusion cell, while the distal cells differentiate into branched chains of subspherical carposporangia. The superficial similarity of the outwardly developed osteolate cystocarp is responsible for Kylin's (1956) placement of Chondrymenia in his family Sarcodiaceae; however, the manner in which the placenta is formed is more like that seen in the Cystocloniaceae-Solieriaceae complex
dc.description.sponsorship
This project was supported by two grants from the Spanish Ministry of Science and Technology (CGL2004-05556-C02-01 and CGL2008-00932); by
grants from Taiwan's National Science Council (NSC 99-2621-B-019-003-MY3) and NTOU's Center of Excellence for Marine Bioenvironment and Biotechnology to S.-M. Lin; and by NSF grant DEB0937978 to J.M. Lopez Bautista, M.H. Hommersand and S. Fredericq
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Taylor and Francis
dc.relation
MICYT/PN 2004-2007/CGL2004-05556-C02-01
info:eu-repo/grantAgreement/MICINN//CGL2008-00932/ES/BIOLOGIA Y TAXONOMIA DEL GENERO PORPHYRA (BANGIALES, RHODOPHYTA) EN LA PENINSULA IBERICA/
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1080/09670262.2013.789931
dc.relation.ispartof
© European Journal of Phycology, 2013, vol. 48, núm. 2, p. 188-199
dc.relation.ispartofseries
Articles publicats (D-CCAA)
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Tots els drets reservats
dc.subject
dc.title
Comparative morphology and systematics of Chondrymenia lobata from the Mediterranean Sea and a phylogeny of the Chondrymeniaceae fam. nov. (Rhodophyta) based on rbcL sequence analyses
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
017775
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1469-4433