Gene sequences of the lichen Cetraria aculeata ...

• Main Authors: Fernández-Mendoza, Fernando, Domaschke, Stephanie, García, Miguel Ángel, Jordan, Patrick, Martín, María, Printzen, Christian
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Optional event label; Latitude of event; Longitude of event; Location of event; Date/Time of event; Comment of event; Uniform resource locator/link to file; Biological sample; FASTA-Format; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.767433; https://doi.pangaea.de/10.1594/PANGAEA.767433

Lichens are symbioses between fungi (mycobionts) and photoautotrophic green algae or cyanobacteria (photobionts). Many lichens occupy large distributional ranges covering several climatic zones. So far, little is known about the large-scale phylogeography of lichen photobionts and their role in shaping the distributional ranges of lichens. We studied south polar, temperate and north polar populations of the widely distributed fruticose lichen Cetraria aculeata. Based on the DNA sequences from three loci for each symbiont, we compared the genetic structure of mycobionts and photobionts. Phylogenetic reconstructions and Bayesian clustering methods divided the mycobiont and photobiont data sets into three groups. An AMOVA shows that the genetic variance of the photobiont is best explained by differentiation between temperate and polar regions and that of the mycobiont by an interaction of climatic and geographical factors. By partialling out the relative contribution of climate, geography and codispersal, we ... : The URL in column 8 of the metadata table points to one zip-archive which contains 8 sequence files in fasta format. Each file consists of data from several locations. ...