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Table 1 The activities of SOD enzyme in non-transgenic (NT) and transgenic (SC) potatoes during and after stress

From: Enhanced tolerance of transgenic potato plants expressing choline oxidase in chloroplasts against water stress

PEG treatments Potato type SOD activity (units / mg protein)
Stress period Recovery period
DAY 0 DAY 1 DAY 2 DAY 3 DAY 4 DAY5
Control (0% PEG) SC 16.86±2.05 18.55±3.22 17.1±2.65 17.88±1.85 18.65±1.96 17.3±2.88
NT 17.07±2.72 18.12±1.75 18.9±3.11 17.6±1.68 16.7±2.84 17.83±2.03
Moderate stress (10% PEG) SC 18.2±2.21 25.82±4.55 30.15±6.48 23.84±5.14 31.44*±4.97 37.28*±7.13
NT 18.21±3.48 21.75±6.54 28.26±5.84 19.52±5.78 20.89±4.22 28.44±7.61
Severe stress (20% PEG) SC 17.92±1.57 23.18±4.21 26.77*±4.33 22.46*±6.14 25.06*±3.35 29.34±6.92
NT 16.55±2.41 18.25±3.26 17.25±5.11 11.77±4.68 17.38±3.57 22.21±4.85
  1. Data are expressed as the mean of five replicates. Asterisks (*) represent significantly different (P < 0.05) with the NT.