Figure 1.

T. oceanica CCMP1005 genome statistics. The sequenced strain T. oceanica CCMP1005 belongs to the Centrales group of radially symmetric diatoms and was first isolated from the oligotrophic Sargasso Sea by R Guillard. At 92.15 Mb, our genome assembly is slightly larger than the expected haploid genome size of 81.6 Mb, suggesting some redundancy in the current assembly. The genuine AUGUSTUS gene model predictions include a large fraction of pseudogenes and short ORFs that show no homology to any proteins from the NCBI nr database at a reasonable E-value cutoff. Left inset contains light microscopy images of the sequenced organism in valve view (upper image, chloroplasts brown) and girdle view (lower image, chloroplasts red from overlay of chlorophyll autofluorescence). Right inset shows the separation of nuclear and organellar DNA in a CsCl density gradient. Stained DNA emits blue fluorescence upon excitation with UV light.