Effects of exogenous nitric oxide and salicylic acid on chilling-induced oxidative stress in wheat (Triticum aestivum)

Figures & data

Figure 1. Effects of sodium nitroprusside (SNP) and/or salicylic acid (SA) on (a) hydrogen peroxide and (b) superoxide anion contents of Triticum aestivum L. Bars followed by the same letter do not differ statistically at p < 0.05 (Duncan's multiple-range test). The average of three determinations is presented, with bars indicating SE.

Figure 2. Effects of sodium nitroprusside (SNP) and/or salicylic acid (SA) on malondialdehyde (MDA) level of Triticum aestivum L. Bars followed by the same letter do not differ statistically at p < 0.05 (Duncan's multiple-range test). The average of three determinations is presented, with bars indicating SE.

Table 1. Effects of sodium nitroprusside (SNP) and/or salicylic acid (SA) on the growth performance of wheat seedlings (Triticum aestivum L.).

Treatments	SOD activity (U g^–1 FW)	CAT activity (U g^−1 FW)	POX activity (U g^–1 FW)
Control	53.45 ± 0.32d	468 ± 0.26c	590 ± 0.28d
Chilling	64.17 ± 0.45c	522 ± 0.15b	790 ± 0.39c
Chilling + SNP	93.36 ± 0.21b	600 ± 0.17a	1350 ± 0.45b
Chilling + SA	89.14 ± 0.29b	470 ± 0.12c	1300 ± 0.4b
Chilling + SNP + SA	97.5 ± 0.2a	530 ± 0.14b	1420 ± 0.53a

Note: Different letters in the same column indicate statistically significant differences (p < 0.05).

SOD = superoxide dismutase; CAT = catalase; POX = peroxidase.