Table 1.

Metabolites in plant leaf tissues for water treatment and 2 mM aspartate treatment of perennial ryegrass exposed to control temperature and heat stress conditions.

No.	RT (min)	Metabolites	m/z	No.	RT (min)	Metabolites	m/z
1	2.66	Adenine	134.05	27	3.88	Leucine	130.09
2	2.64	Adenosine	266.09	28	12.63	Lysine	145.10
3	3.04	Allantoin	157.04	29	8.79	Malate	133.01
4	6.48	Alanine	88.04	30	4.45	Methionine	148.04
5	7.34	Alpha-Ketoglutarate	145.01	31	8.54	Oxaloacetate	131.00
6	9.40	AMP	346.06	32	2.94	Phenylalanine	164.07
7	8.70	Aspartate	132.03	33	5.85	Proline	114.06
8	7.54	Asparagine	131.05	34	2.54	Pyruvate	87.01
9	12.43	Arginine	173.10	35	5.92	Ribitol	151.06
10	5.16	Biotin	243.08	36	1.36	Salicylic acid	137.02
11	11.51	Citrate	191.02	37	7.49	Serine	104.04
12	3.90	Cytidine	242.08	38	7.05	Shikimate	173.05
13	8.88	Citrulline	174.09	39	5.73	Sorbitol	181.07
14	7.55	Fumarate	115.00	40	8.28	Succinic acid	117.02
15	5.77	Glucose	179.06	41	7.14	Sucrose	341.11
16	10.58	Glucose 6-phosphate	259.02	42	7.08	Thiamine	263.10
17	11.12	Glucose 1-phosphate	259.09	43	6.76	Threonine	118.05
18	8.23	Glucuronic acid	193.04	44	2.06	Thymidine	241.08
19	8.48	Glutamate	146.05	45	1.99	Thymine	125.04
20	7.30	Glutamine	145.06	46	4.39	Tryptophan	203.08
21	4.17	Guanosine	282.08	47	4.94	Tyrosine	180.07
22	3.38	Guanine	150.04	48	9.60	UDP-Glucose	565.05
23	7.01	Glycine	74.02	49	9.46	UMP	323.03
24	9.78	Histidine	154.06	50	2.12	Uracil	111.02
25	4.33	Isoleucine	130.89	51	5.38	Valine	115.00
26	3.87	Lactate	89.02	52	3.92	Xanthine	151.03

RT, retention time; m/z, mass to charge ratio.