Table 1.

Major Features of the P. tricornutum, T. pseudonana and E. siliculosus Genomes

	P. tricornutum	T. pseudonana	E. siliculosus
Sequencing center	JGI	JGI	VIB/Ugent
Genome size	27.4 Mb	32.4 Mb	195.8 Mb
Predicted genes	10,402	11,776	16,256
Introns per gene	0.79	1.52	6.98
Bacterial genes*	587	> 328	NA
Known TEs	6.4%	1.9%	12.5%
Other repeats*	NA	NA	9,9%

^*For T. pseudonana, the number indicates that although species-specific estimation is not available, 56% of the P. tircornutum bacterial gene pool was also found in T. pseudonana. The number of bacterial genes was not yet estimated in E. siliculosus. The amount of unknown repeats in diatoms has not yet been estimated.