Horizontal gene transfer in the evolution of red algae. Image from Kobras and Falush, eLife, 2019 and photos by Andreas Weber (left panel), Debashish Bhattacharya (two middle panels), and Shin-ya Miyagishima (right panel). [CC BY 4.0]

The Galdieria phlegrea Soos genome sequence and gene models have not been determined by the JGI, but were downloaded from the Red Algal Resources to Promote Integrative Research in Algal Genomics webpage on October 31, 2019. Please note that this copy of the genome is not maintained by Red Algal Resources and is therefore not automatically updated. In order to allow comparative analyses with other algal genomes sequenced by the JGI, a copy of this genome is incorporated into PhycoCosm. The JGI Annotation Pipeline was used to add functional annotation to this genome.

Galdieria phlegrea Soos originates from Soos National Park in the Czech Republic and belongs to the Cyanidiales, a monophyletic clade of polyextremophilic unicellular red algae. The Cyanidiales thrive in acidic and thermal habitats, such as volcanoes, geysers, acid rivers, and geothermal plants. It is estimated that 1% of their gene inventory is derived from horizontal gene transfer (HGT), and the majority of these HGT-derived genes are related to polyextremophily (Rossoni et al., 2019).