Monogalactosyldiacylglycerol synthase isoforms play diverse roles inside and outside the diatom plastid.

ABSTRACT: Diatoms derive from a secondary endosymbiosis event, which occurred when a eukaryotic host cell engulfed a red alga. This led to the formation of a complex plastid enclosed by four membranes: two innermost membranes originating from the red alga chloroplast envelope, and two additional peri- and epiplastidial membranes (PPM, EpM). The EpM is linked to the endoplasmic reticulum (ER). The most abundant membrane lipid in diatoms is monogalactosyldiacylglycerol (MGDG), synthesized by galactosyltransferases called MGDG synthases (MGDs), conserved in photosynthetic eukaryotes and considered to be specific to chloroplast membranes. Similar to angiosperms, a multigenic family of MGDs has evolved in diatoms, but through an independent process. We characterized MGDα, MGDβ and MGDγ in Phaeodactylum t

SUBMITTER: Gueguen N 

PROVIDER: S-EPMC11638560 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature