Effect of exogenous arginine on alleviation of oxidative damage in tomato plant underwater stress

Figures & data

Table 1. Changes in the ascorbate (A), dehydroascorbate (C), and reduced glutathione (E) in tomato seedlings pretreated with arginine or arginine + LNAM under drought stress.

Treatment	ASA (mg/gDW)	DHASA (mg/gDW)	GSH (mmol/gDW)
Control	4.6±0.28 (a)	1.02±0.008 (b)	0.2±0.02 (a)
arginine	4.97±0.123 (a)	0.89±0.21 (b)	0.17±0.04 (a)
LNAM	4.47±0.1 (a)	0.97±0.17 (b)	0.19±0.015 (a)
arginine + LNAM	4.84±0.14 (a)	0.77±0.007 (b)	0.17±0.01 (a)
Drought	1.23±0.27 (c)	2.42±0.27 (a)	0.059±0.01 (c)
Drought + arginine	2.97±0.21 (b)	1.04±0.12 (b)	0.13±0.01 (b)
Drought + LNAM	1.67±0.11 (c)	2.33±0.21 (a)	0.043±0.02 (c)
Drought + arginine + LNAM	2.68±0.21 (b)	1.26±0.17 (b)	0.091±0.01 (c)
Note: Data are means±SE of three replicates. The significant differences between treatments was determined by Duncan test taking p<0.05 as significant. In each column, the same letter indicates non-significant differences. DW, dry weight.

Figure 1.  Effect of arginine and arginine + LNAM pretreatment on MDA (A), other aldehydes (B), hydrogen peroxide content (C) in tomato plant leaves under control and drought stress condition.

Figure 2.  Effect of arginine and arginine + LNAM supply on activities of SOD (A), CAT (B), GPX (C), APX (D), and GR (E) in leaves of tomato plant under control and drought stress condition.