Migration of the plastid genome to the nucleus in a peridinin dinoflagellate.

摘要: Dinoflagellate algae are important primary producers and of significant ecological economic impact because their ability to form "red tides" [1]. They also models for evolutionary research an unparalleled capture photosynthetic organelles (plastids) through endosymbiosis [2]. The nature extent the plastid genome in dominant perdinin-containing dinoflagellates remain, however, two most intriguing issues evolution. these taxa is reduced single-gene minicircles [3, 4] encoding incomplete (until now 15) set proteins. location remaining genes unknown. We generated a data 6,480 unique expressed sequence tags (ESTs) from toxic dinoflagellate Alexandrium tamarense (for details, see Experimental Procedures Supplemental Data) find missing understand on Here we identify 48 non-minicircle-encoded nuclear A. tamarense, accounting majority photosystem. Fifteen that always found other plants have been transferred nucleus tamarense. plastid-targeted red green algal origins. These results highlight position as champions gene transfer among eukaryotes.