Acyltransferase involved in fatty acid phytyl ester synthesis in chloroplasts, a process required for the maintenance of the photosynthetic membrane integrity during abiotic stress and senescence (PubMed:22623494). Exhibits phytyl ester synthesis and diacylglycerol acyltransferase activities with broad substrate specificities, and can employ acyl-CoAs, acyl carrier proteins, and galactolipids as acyl donors (PubMed:22623494). a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + a 1,2-diacylglycerol = a triacylglycerol + an acyl-3-O-(beta-D-galactosyl)-sn-glycerol a 1,2-diacylglycerol + a fatty acyl-CoA = a triacylglycerol + CoA a 1,2-diacylglycerol + a fatty acyl-[ACP] = a triacylglycerol + holo-[ACP] a fatty acyl-CoA + phytol = a fatty acid phytyl ester + CoA phytol + tetradecanoyl-CoA = CoA + tetradecanoate phytyl ester a 1,3-diacylglycerol + a fatty acyl-CoA = a triacylglycerol + CoA 1,2-dihexanoylglycerol + tetradecanoyl-CoA = 1,2-dihexanoyl-3-tetradecanoylglycerol + CoA 1,2-dihexanoylglycerol + hexadecanoyl-CoA = 1,2-dihexanoyl-3-hexadecanoylglycerol + CoA 1,2-dihexanoylglycerol + octadecanoyl-CoA = 1,2-dihexanoyl-3-octadecanoylglycerol + CoA (7Z,10Z,13Z)-hexadecatrienoyl-CoA + 1,2-dihexanoylglycerol = 1,2-dihexanoyl-3-(7Z,10Z,13Z-hexadecatrienoyl)-glycerol + CoA (9Z)-octadecenoyl-CoA + 1,2-dihexanoylglycerol = 1,2-dihexanoyl-3-(9Z-octadecenoyl)-glycerol + CoA (9Z,12Z,15Z)-octadecatrienoyl-CoA + 1,2-dihexanoylglycerol = 1,2-dihexanoyl-3-(9Z,12Z,15Z-octadecatrienoyl)-glycerol + CoA decanoyl-CoA + phytol = CoA + decanoate phytyl ester (7Z,10Z,13Z)-hexadecatrienoyl-CoA + phytol = (7Z,10Z,13Z)-hexadecatrienoate phytyl ester + CoA dodecanoyl-CoA + phytol = CoA + dodecanoate phytyl ester Interacts with PGM48. Mostly expressed in flowers (e.g. sepals, petals and stamen). Highly expressed during senescence. Accumulates upon nitrogen deprivation (PubMed:22623494). Triggered by NAC072/RD26 during senescence (PubMed:29659022). Plants lacking both PES1 and PES2 grow normally but show reduced phytyl ester and triacylglycerol accumulation. Belongs to the diacylglycerol acyltransferase family.