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Table 2 The activities of CAT 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 CAT activity (units / mg protein)
Stress period Recovery period
DAY 0 DAY 1 DAY 2 DAY 3 DAY 4 DAY5
Control (0% PEG) SC 0.463±0.22 0.472±0.16 0.459±0.19 0.466±0.24 0.461±0.26 0.457±0.22
NT 0.465±0.20 0.469±0.17 0.463±0.23 0.454±0.19 0.456±0.18 0.465±0.11
Moderate stress (10% PEG) SC 0.451±0.14 0.814±0.17 0.854±0.26 0.722*±0.23 0.907*±0.29 1.214*±0.42
NT 0.47±0.15 0.717±0.53 0.653±0.35 0.533±0.24 0.565±0.22 0.896±0.36
Severe stress (20% PEG) SC 0.459±0.17 0.667±0.26 0.839*±0.44 0.676*±0.23 0.734*±0.47 0.917*±0.29
NT 0.462±0.11 0.508±0.27 0.362±0.24 0.216±0.12 0.369±0.13 0.448±0.18
  1. Data are expressed as the mean of five replicates. Asterisks (*) represent significantly different (P < 0.05) with the NT.