@ARTICLE{TreeBASE2Ref20673, author = {Steve Leavitt and Theodore L Esslinger and H. Thorsten Lumbsch}, title = {Miocene divergence, cryptic lineages, and contrasting distribution patterns in common camoflauge lichen fungi (Parmeliaceae, Ascomycota)}, year = {2012}, keywords = {coalescence ? concatenation ? genealogical concordance ? Melanelixia ? M. fuliginosa ? M. subaurifera ? species delimitation ? species tree ? *BEAST }, doi = {}, url = {http://}, pmid = {}, journal = {Biological Journal of the Linnean Society}, volume = {}, number = {}, pages = {}, abstract = {In spite of the recent advancements in recognizing diversity in lichen-forming fungi, assessing the timing of diversification remains largely unexplored in these important fungal symbionts. To better understand evolutionary processes driving diversification in common lichen-forming fungi, we investigated the phylogeny and biogeography of the broadly distributed Melanelixia fuliginosa/M. glabratula group, using molecular data from six nuclear markers. Phylogenetic analyses of individual gene alignments and combined data provide strong evidence for five species-level lineages within this species complex. Three of these lineages correspond to the previously described species M. fuliginosa, M. glabratula, and M. subaurifera. The remaining two lineages, ?M. crespoae? and ?M. robertsonii?, merit species recognition based on genealogical concordance. Both M. glabratula and M. subaurifera had broad intercontinental distributions, sharing identical haplotypes among intercontinental populations. Based on the current sampling, M. fuliginosa sensu stricto was represented exclusively by European material and was not collected in North America. ?M. crespoae? was represented by collections from Scotland and Spain; and ?M. robertsonii? was represented by collections in California, USA. Environmental factors driving the contrasting distributions patterns in this group remain unknown. Divergence times estimated using a coalescence-based multilocus species-tree approach suggests that diversification within the Melanelixia fuliginosa/M. glabratula group occurred exclusively during the Miocene. Our results indicate that cryptic lichen-forming fungal species-level lineages may be relatively ancient and do not necessarily reflect recent divergence events. Furthermore, diagnosable phenotypic differences may be absent even millions of years since the initial divergence. } }

• Go to search
• Citation
• Taxa
• Matrices
• Trees
• Analyses
• 

CiteULike

Delicious

Connotea