The Undaria pinnatifida M23 genome sequence and gene models have not been determined by the JGI, but were downloaded from Shan et al. 2020 on July 14, 2020. Please note that this copy of the genome is not maintained by Shan et al. 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.