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DatoValore
TitleMorphology of Acanthophora nayadiformis (Ceramiales, Rhodophyta)
AbstractAcanthophora nayadiformis is a perennial species of red alga that overwinters by means of a rhizomatous prostrate system; both reproductive and vegetative plants are also able to spread by means of specialized vegetative propagules that have never been reported in other Acanthophora species. A detailed study of thallus morphology has highlighted four kinds of primordia in this species, distinct in shape, size and origin, that develop into as many different types of branches. Thallus growth is at first monopodial, shifting to ramisympodial in most plants. Even the morphological variation observed among tetrasporiferous branches is caused by the type and development of their parent primordia, which confirms the extreme inadequacy of this feature for taxonomic or diagnostic use at species level.
SourcePhycologia 41, pp. 523–532
KeywordsA. nayadiformisthallus morphologypropagulesMediterranean
JournalPhycologia
EditorBlackwell Scientific Publ., Melbourne, Regno Unito
Year2002
TypeArticolo in rivista
AuthorsCecere E. , Perrone C.
Text6283 2002 A. nayadiformis thallus morphology propagules Mediterranean Morphology of Acanthophora nayadiformis Ceramiales, Rhodophyta Cecere E. , Perrone C. IAMC CNR; Universita di Bari. Acanthophora nayadiformis is a perennial species of red alga that overwinters by means of a rhizomatous prostrate system; both reproductive and vegetative plants are also able to spread by means of specialized vegetative propagules that have never been reported in other Acanthophora species. A detailed study of thallus morphology has highlighted four kinds of primordia in this species, distinct in shape, size and origin, that develop into as many different types of branches. Thallus growth is at first monopodial, shifting to ramisympodial in most plants. Even the morphological variation observed among tetrasporiferous branches is caused by the type and development of their parent primordia, which confirms the extreme inadequacy of this feature for taxonomic or diagnostic use at species level. 41 La pubblicazione si inserisce nella problematica dello studio delle specie alloctone e delle strategie di riproduzione vegetativa messe in atto dalle stesse. Parte dei risultati di tale pubblicazione verra riportata in Atlas of introduced algae to European shores a cura di C.F. Boudouresque, S. Ruitton, M. Verlaque e T. Belsher dell Universita di Marsiglia, nell ambito del Programma Europeo Algal Introductions to European Shores ALIENS La rivista ha fattore d impatto per il 2002 pari a 1,239. Articolo in rivista Blackwell Scientific Publ. 0031 8884 Phycologia Phycologia Phycologia ester.cecere CECERE ESTER