Table 1.

¹³C incorporation (%) in detected metabolites in wild-type (W) and mmdh1 (M) samples under high (>1 000 ppm) and low (200 ppm) CO₂. T1, 30min treatment; T2, 60min treatment; T3, 120min treatment.

Values should be considered as indicators rather than exact quantitative values. *, missing value.

	High CO2 13C (%)						Low CO2 13C (%)
	T1		T2		T3		T1		T2		T3
	W	M	W	M	W	M	W	M	W	M	W	M
a-ketoglutaric acid	4	1	9	-	10	6	7	-	1	-	1	-
Alanine	52	55	63	62	67	73	41	51	31	59	55	50
Arginine	14	23	18	25	36	40	20	20	18	26	32	28
Ascorbic acid	-	-	3	1	10	6	3	2	4	1	1	1
Asparagine	2	5	9	18	23	33	8	10	12	22	28	33
Aspartic acid	41	40	48	50	60	65	32	31	34	26	47	37
β-alanine	-	3	1	-	-	-	6	-	4	-	-	-
Citric acid	-	1	1	1	1	2	1	-	-	-	-	1
Fructose	20	10	26	24	36	42	8	9	10	16	23	20
Fumaric acid	3	3	5	7	12	14	4	4	5	5	8	10
GABA	9	5	25	9	16	19	29	-	13	6	8	18
Glucose	8	5	11	11	14	17	4	5	5	5	6	8
Glutamic acid	4	6	8	10	13	15	1	1	3	2	3	3
Glutamine	3	5	6	9	12	15	2	2	2	1	3	4
Glyceric acid	45	46	54	56	64	64	39	45	48	41	53	50
Glycerol	1	-	-	1	1	2	-	2	-	1	1	1
Glycine	27	25	50	56	49	65	41	71	57	72	57	72
Glycolic acid	22	16	29	22	31	30	19	25	28	24	19	24
Isoleucine	23	24	25	32	32	40	9	11	12	9	30	-
Leucine	33	30	20	35	26	32	-	-	5	-	37	-
Lysine	25	28	19	31	23	29	9	6	14	6	23	-
Malic acid	8	7	9	11	17	18	9	9	11	11	19	15
Maltose	82	78	83	80	87	90	77	75	74	73	81	74
Phenylalanine	26	23	26	34	35	43	18	23	20	26	41	8
Serine	76	74	81	82	88	90	67	66	70	66	82	67
Shikimic acid	12	13	19	21	28	32	10	12	15	13	18	12
Spermidine	-	-	-	1	4	-	4	-	3	-	6	1
Succinic acid	1	7	1	12	2	17	-	17	-	15	1	14
Sucrose	60	53	76	74	81	84	42	44	47	56	59	57
Threonine	2	5	5	8	16	24	5	7	5	11	16	10
Trehalose	8	6	6	5	4	7	6	3	10	4	9	9
Tyrosine	17	13	NA*	25	8	25	-	-	2	4	22	-
Valine	23	25	25	33	39	43	11	10	9	20	37	NA*