RT journal article
T1 Improved phylogeny of brown algae Cystoseira (Fucales) from the Atlantic- Mediterranean region based on mitochondrial sequences
A1 Bruno de Sousa, Carolina
A1 Cox, Cymon J.
A1 Brito, Luís
A1 Pavão, Maria Madalena
A1 Pereira, Hugo
A1 Ferreira, Ana
A1 Ginja, Catarina
A1 Campino, Lenea
A1 Bermejo Lacida, Ricardo
A1 Parente, Manuela
A1 Varela, João
A2 Biología
AB Cystoseira is a common brown algal genus widely distributed throughout the Atlantic andMediterranean regions whose taxonomical assignment of specimens is often hampered byintra- and interspecific morphological variability. In this study, three mitochondrial regions,namely cytochrome oxidase subunit 1 (COI), 23S rDNA (23S), and 23S-tRNAVal intergenicspacer (mt-spacer) were used to analyse the phylogenetic relationships of 22 Cystoseirataxa (n = 93 samples). A total of 135 sequences (48 from COI, 43 from 23S and 44 from mtspacer)were newly generated and analysed together with Cystoseira sequences (9 COI, 3123S and 35 mt-spacer) from other authors. Phylogenetic analysis of these three markersidentified 3 well-resolved clades and also corroborated the polyphyletic nature of the genus.The resolution of Cystoseira taxa within the three clades improves significantly when theinclusion of specimens of related genera was minimized. COI and mt-spacer markersresolved the phylogeny of some of the Cystoseira taxa, such as the C. baccata, C. foeniculaceaand C. usneoides. Furthermore, trends between phylogeny, embryonic developmentand available chemotaxonomic classifications were identified, showing that phylogenetic,chemical and morphological data should be taken into account to study the evolutionaryrelationships among the algae currently classified as Cystoseira. The resolution of Cystoseiramacroalgae into three well supported clades achieved here is relevant for a moreaccurate isolation and identification of natural compounds and the implementation of conservationmeasures for target species.PLOS ONE
PB PUBLIC LIBRARY SCIENCE
SN 1932-6203
YR 2019
FD 2019-01
LK http://hdl.handle.net/10498/21359
UL http://hdl.handle.net/10498/21359
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 14-nov-2026