Table II.

The EST library distribution and number of expressed genes in CAZyme and expansin families in different poplar tissues^a

EXP, Expansins; Tot, total; Cam, cambial region; Dor Cam, dormant cambium; Act Cam, active cambium; Dor Bud, dormant bud; Flw, male and female mature flowers.

		Total	Cam	Dor Cam^b	Act Cam^b	TW	WCD	Bark	Root	Leaf Young	Leaf Cold	Leaf Old	Petiole	Apical Bud	SAM^b	Dor Bud	Flw Male	Flw Fem	Seed
ESTs	Total	2,449	269	98	190	394	157	121	112	143	168	156	138	140	138	119	78	170	115
	GH	1,115	78	52	67	125	73	59	53	74	65	59	52	77	37	51	32	80	81
	GT	970	94	32	64	189	70	34	28	55	58	63	34	37	63	53	23	47	26
	PL	66	21	2	1	20	1	1	1	0	5	0	6	0	4	0	1	3	0
	CE	117	6	3	10	12	2	8	5	8	15	4	16	3	2	0	10	12	1
	EXP	181	50	0	17	19	4	11	4	1	15	26	11	5	7	0	3	6	2
Expressed genes	Total	597	133	53	137	139	79	82	68	66	101	71	91	84	93	53	59	101	52
	GH	222	46	20	42	47	34	36	25	25	35	25	33	36	33	28	26	45	27
	GT	304	58	25	55	63	37	30	25	30	44	39	30	28	43	21	21	38	18
	PL	14	7	2	1	8	1	1	1	0	3	0	2	0	3	0	1	1	0
	CE	36	6	3	7	7	1	6	5	6	10	3	10	3	2	0	4	4	1
	EXP	21	9	0	10	6	3	4	4	1	5	1	6	4	4	0	1	4	2

↵a Numbers of EST clones corresponding to CAZyme-encoding genes and expansins (top half) or the number of genes with at least one corresponding EST (bottom half) in the collection of similar-sized cDNA libraries representing different tissues/developmental stages.
↵b Libraries constructed from amplified cDNA, not directly comparable to other libraries but comparable to each other and internally.