RT info:eu-repo/semantics/article
T1 Colaconema ophioglossum comb. nov. and Liagorophila endophytica (Acrochaetiaceae, Rhodophyta) in the eastern Atlantic
A1 Afonso Carrillo, Julio
A1 Sansón Acedo, Marta
A1 Sangil, Carlos
A2 BotánicaEcología y Fisiología Vegetal
A2 Botánica Marina
AB Two species of acrochaetioid algae (Rhodophyta) are reported from theCanary Islands for the first time. Both Colaconema ophioglossum comb. nov.,previouslyknown from North Carolina and Puerto Rico in the Western Atlantic [as Audouinellaophioglossa Schneider and Acrochaetium ophioglossum (Schneider) Ballantine et Aponte],and Liagorophila endophytica Yamada,cited from several localities in the Pacific Oceanand with a single report from the Caribbean coast of Colombia,constitute new records forthe eastern Atlantic Ocean. Colaconema ophioglossum was found growing epi-endophytically between the cortical fascicles of the recently described Canarian endemic Dudresnayamultiramosa Afonso-Carrillo,Sansón et Reyes,which constitutes a new host for this species.Its vegetative cells contain a single lobate parietal chloroplast with a single pyrenoid,a feature exclusive of Colaconema, and consequently the species is transferred to this genus.Liagorophila endophytica was discovered in the outer cortex of Liagora canariensisBørgesen. Data concerning geographical distribution and observations on vegetative andreproductive morphology,especially the development of the carposporophyte,are presented for the two species. In C. ophioglossum,the fertilized carpogonium divides transversely and gonimoblasts are monopodially branched. In L. endophytica the fertilizedcarpogonium divides longitudinally and the gonimoblasts are radially produced by successive longitudinal cells divisions. This distinctive type of gonimoblast development isregarded as a taxonomically significant feature,and suggests retention of Liagorophila as aseparate genus. Conflicting reports of plastid morphology do not allow confident ordinalplacement of Liagorophila and the genus is regarded as of uncertain affinity,but allied tothe Acrochaetiales or Colaconematales
YR 2003
FD 2003
LK http://riull.ull.es/xmlui/handle/915/26747
UL http://riull.ull.es/xmlui/handle/915/26747
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DS Repositorio institucional de la Universidad de La Laguna
RD 18-dic-2024