Ginger and turmeric expressed sequence tags identify signature genes for rhizome identity and development and the biosynthesis of curcuminoids, gingerols and terpenoids

Table 1 Entry point enzymes that regulate carbon partitioning into specific metabolic pathways

Descriptive name	EC #	Abbr.	T3C		GW			GY
Descriptive name	EC #	Abbr.	Rh	L	Rh	L	R	Rh	L	R
*Primary/core metabolism*
sucrose synthase	2.4.1.13	SUS	25	0	39	7.1	38	23	14	14
pyruvate kinase	2.7.1.40	KPY	8.8	4.4	16	2.8	6.3	12	0	7.1
pyruvate dehydrogenase	1.2.1.51	PNO	1.8	3.0	6.4	5.7	6.3	3.1	10.1	3.5
*Shikimate pathway*
DAHP synthetase	2.5.1.54	DAHPS	3.5	0	6.4	0	1.6	14	3.4	7.1
*Phenylpropanoid pathway*
phenylalanine ammonia lyase	4.3.1.5	PAL	11	0	4.8	16	13	3.1	0	11
*Terpenoid pathway*
MEP pathway
DOXP reductoisomerase	1.1.1.267	DXR	1.8	0	6.4	0	0	0	0	20
MVA pathway
HMG-CoA reductase	1.1.1.34	HMGR	0	0	0	0	0	0	0	3.5
Common steps
isopentenyl diphosphate isomerase	5.3.3.2	IDI	3.5	0	4.8	1.4	6.3	7.7	0	0
farnesyl diphosphate synthase	2.5.1.10	FPPS	12	8.9	6.4	0	11	34	6.7	11
terpene synthases	N/A	CS	30	7.4	16	0	14	36	0	20
*One carbon metabolism*
methionine synthase (cobalamin-independent)	2.1.1.14	METE	7	22	18	4.3	17	17	3.4	21

Values given are normalized total EST number (TEN) (×10⁴). TEN, an indicator of EST expression levels, was calculated as the sum of all ESTs that are associated with gene products carrying out a specific enzymatic activity, divided by the total EST number within a particular library.

ISSN: 1471-2229