show Abstracthide AbstractThe marine dinoflagellate Dinophysis fortii derives plastids indirectly from cryptophte Teleaulax amphioxeia via their ciliate prey, Mesodinium rubrum. Thus, D. fortii plastids are originated from the cryptophyte. To identify D. fortii genes derived from the cryptophyte via lateral gene transfer, transcripts of D. fortii, M. rubrum, and T. amphioxeia were sequenced by illumina NextSeq500.