CK	transgenic tobacco lines transformed with empty vector (control)
HPLC	high-performance liquid chromatography
ORF	open reading frame
OE-MaDFR	MaDFR overexpressed tobacco lines
GFP	green fluorescent protein
qRT-PCR	quantitative real-time PCR
Cy	cyaniding
Dp	delphinidin
Pg	pelargonidin
DHQ	dihydroquercetin
DHM	dihydromyricetin
LC-MS	liquid chromatography-mass spectrometry
CHS	chalcone synthase
CHI	chalconeisomerase
F3H	flavanone 3-hydroxylase
F3′H	flavonoid 3′-hydroxylase
F3′5′H	flavonoid 3′5′-hydroxylase
DFR	dihydroflavonol 4-reductase
ANS	anthocyanidin synthase
UFGT	anthocyanidin 3-O-glucosyltransferase
MYBs	MYB transcription factors
bHLHs	basic helix-loop-helix proteins
WDR	WD repeat protein
EBGs	early biosynthetic genes
LBGs	late biosynthetic genes