Table 3.

Bulb pigmentation candidate genes in onion (A. cepa L.).

Function	Gene	Enzyme	KO id (EC no.)	No.All
Flavonoid biosynthesis	CHS	Chalcone synthase	K00660 (2.3.1.74)	2
	CHI	Chalcone isomerase	K01859 (5.5.1.6)	1
	F3H	Flavanone 3-hydroxylase	K00475 (1.14.11.9)	1
	F3′H	Flavanone 3′-hydroxylase	K05280 (1.14.13.21)	2
	F3′5′H	Flavanone 3′5′-hydroxylase	K13083 (1.14.13.88)	4
	DFR	Dihydroflavonol 4-reductase	K13082 (1.1.1.219)	1
	ANS	Anthocyanidin synthase	K05277 (1.14.11.19)	1
	UFGT	Anthocyanidin 3-O-glucosyltransferase	K12930 (2.4.1.115)	1
	C3M	Coumaroylquinate(coumaroylshikimate) 3′-monooxygenase	K09754 (1.14.13.36)	4
	CoA	Caffeoyl-CoA O-methyltransferase	K00588 (2.1.1.104)	3
	C4H	Cinnamate-4-hydroxylase	K00487 (1.14.13.11)	2
	SOHT	Shikimate O-hydroxycinnamoyltransferase	K13065 (2.3.1.133)	2
	FLS	Flavonol synthase	K05278 (1.14.11.23)	2
	FOMT	Flavonol 3-O-methyltransferase	K05279 (2.1.1.76)	1