Fig. 4

Gene features in Symbiodiniaceae genomes. a Principal component analysis (PCA) based on metrics of predicted genes from the analysed 15 genomes. Data points are coloured by genus and shaped by lifestyle according to the legends to the right. Data points enclosed in a light blue area correspond to isolates with hybrid genome assemblies. Smi: S. microadriaticum, Sne: S. necroappetens, Sli: S. linucheae, Str: S. tridacnidorum, Sna: S. natans, Spi: S. pilosum, Bmi: B. minutum, Cgo: C. goreaui, Csp: Cladocopium sp. C92, Fka: F. kawagutii, Pgl: P. glacialis. Isolate name is shown in subscript for those species with more than one isolate. b Loading plot showing the contribution of the distinct gene metrics employed for the PCA to PC1 and to PC2