Pinus pinaster
"Sireviruses"/Maximus retrotransposons contain an additional putative envelope gene. This lineage is named for the founder element SIRE1 in the "Glycine max" genome, and was later described in many species such as "Zea mays", "Arabidopsis thaliana", "Beta vulgaris", and "Pinus pinaster". Plant "Sireviruses" of many sequenced plant genomes are summarized at the MASIVEdb "Sirevirus" database.