TreeBASE Search-Trees for study 28254

@ARTICLE{TreeBASE2Ref32133, author = {Svenja Heesch and Martha Serrano-Serrano and Josu? Barrera-Redondo and R?my Luthringer and Akira F. Peters and Christophe Destombe and J. Mark Cock and Myriam Valero and Denis Roze and Nicolas Salamin and Susana M. Coelho}, title = {Evolution of life cycles and reproductive traits: insights from the brown algae}, year = {2021}, keywords = {Phaeophyceae, ploidy, sex determination, gamete size, parthenogenesis}, doi = {}, url = {http://}, pmid = {}, journal = {Journal of Evolutionary Biology}, volume = {}, number = {}, pages = {}, abstract = {A vast diversity of types of life cycles exists in nature, and several theories have been advanced to explain how this diversity has evolved and how each type of life cycle is retained over evolutionary time. Here, we exploited the diversity of life cycles and reproductive traits of the brown algae (Phaeophyceae) to test several hypotheses on the evolution of life cycles. We investigated the evolutionary dynamics of four life-history traits: life cycle, sexual system, level of gamete dimorphism and gamete parthenogenetic capacity. We assigned states to up to 77 representative species of the taxonomic diversity of the brown algal group, in a multi-gene phylogeny. We used maximum likelihood and Bayesian analyses of correlated evolution, while taking the phylogeny into account, to test for correlations between traits, and to investigate the chronological sequence of trait acquisition. Our analyses are consistent with the prediction that diploid growth evolves when sexual reproduction is preferred over asexual reproduction, possibly because it allows the complementation of deleterious mutations. We also found that haploid sex determination is ancestral in relation to diploid sex determination. However, our results could not address whether increased zygotic and diploid growth are associated with increased sexual dimorphism. Our analyses suggest that in the brown algae, isogamous species evolved from anisogamous ancestors, contrary to the commonly reported pattern where evolution proceeds from isogamy to anisogamy.} }