Fig. 6
Proposed gene networks involved in unsaturated fatty acid biosynthesis and oil accumulation in Paeonia lactiflora ‘Hangshao’ seeds. The expression levels (represented by the Log2 FPKM) of the possible candidates are highlighted by color scales (blue to red scale) in Paeonia lactiflora ‘Hangshao’ seeds at different development stages (30, 60 and 90 DAF). BC: biotin carboxylase; BCCP: biotin carboxyl carrier protein; α-CT: carboxyl transferase subunit alpha; β-CT: carboxyl transferase subunit beta; MACT: malonyl-CoA-acyl carrier protein transacylase; KASIII: 3-oxoacyl-ACP synthase III; KAR: 3-oxoacyl-ACP reductase; HAD: 3-hydroxyacyl-ACP dehydratase; EAR: enoyl-ACP reductase I; KASII: 3-oxoacyl-ACP synthase II; FATB: fatty acyl-ACP thioesterase B; FATA: fatty acyl-ACP thioesterase A; SAD: stearoyl-ACP desaturase; FAD: fatty acid desaturase; PCH: palmitoyl-CoA hydrolase; LACS: long-chain acyl-CoA synthetase; PC: phosphatidylcholine LPC: lysophosphatidylcholine; LPCAT: lysophosphatidylcholine acyltransferase; PLA2: phospholipase A2; KCS: 3-ketoacyl-CoA synthase; KCR: very-long-chain 3-oxoacyl-CoA reductase; HCD: very-long-chain (3R)-3-hydroxyacyl-CoA dehydratase; ECR: very-long-chain enoyl-CoA reductase; GPAT: glycerol-3-phosphate acyltransferase; LPAAT: 1-acyl-sn-glycerol-3-phosphate acyltransferase; PAP: phosphatide phosphatase; DGAT: diacylglycerol O-acyltransferase; PDAT: phospholipid:diacylglycerol acyltransferase; PDCT: phosphatidylcholine:diacylglycerol cholinephosphotransferase; OB: oil body; OLE: oleosin; CLO: caleosin. * represented DEGs in all three groups. This model was developed based on the transcriptome data obtained in this study and information from Li et al. [17], Tian et al. [24] and Yang et al. [28]