Species tree of Chlorella sorokiniana strain 1228 Maximum-Likelihood phylogeny generated by FastTree for Chlorella sorokiniana strain 1228 and other example Chlorophyta species

The Chlorella sorokiniana strain 1228 genome sequence and gene models have not been determined by the Joint Genome Institute (JGI), but were downloaded from the Los Alamos National Laboratory (LANL) Greenhouse portal on October 31, 2019. In order to ensure this genome is comparable to those sequenced by the JGI, we applied filters to remove if present: 1) transposable elements, 2) pseudogenes, 3) alternative transcripts and overlapping models, 4) alleles on secondary scaffolds and 5) unsupported short models. This resulted in the removal of 468 models and the generation of the FilteredModels1 (GeneCatalog) gene track. All published models are available in the ExternalModels track. Please note that this copy of the genome is not maintained by LANL 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 the genes.

The unicellular green alga Chlorella sorokiniana belongs to the class of the Trebouxiophyceae. This species is of great interest as a feedstock for production of biofuels. Strains of this species can be cultivated photoautotrophically or heterotrophically on glucose. In addition to strain 1228, two other Chlorella sorokinana genomes, UTEX 1230 and DOE 1412, were sequenced and described in Hovde et al. (2018).