Triparma laevis, a silicified species of Bolidophyceae, a sister taxa to the diatoms, and a drawing of its shell. Scale bar = 1 μm. From Wikipedia, CC BY-SA 4.0.

The Triparma laevis f. inornata genome sequence and gene models have not been determined by the JGI, but were downloaded from NCBI on November 04, 2024. 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 601 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 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 following text was modified from NCBI BioProject PRJDB8243:

Biology of Bolidophyceae, a Picoplanktonic Group Sister to Diatoms

Parmales are an unknown small marine phytoplankton group with a silicified cell wall. Based on similarities in cell wall structure, Parmales has been proposed as a close relative of diatoms, the most successful microalgal group in modern oceans, and may play a key role in understanding their origin of silica cell wall and early evolution, which have not yet been clearly established. Tohoku National Fisheries Research Institute isolated the first ever culture of Parmales in the Oyashio region of Japan. Molecular phylogenetic analysis of this culture indicated that Parmales was within the bolidophycean clade of autotrophic naked flagellates and a sister group of diatoms. They analyzed multiple genomes of isolated Parmales and Bolidomonas strains to explore the evolutionary links between Parmlaes and diatoms.