抄録
Productivity of plants is greatly affected by environmental stress, therefore there is a continuous need for the improvement of stress tolerance in the agriculture. During oxidative stress rapid accumulation of reactive oxygen species (ROS) and reactive carbonyl species (RCS) significantly contributes to the damage of crop plants. Improvement of intracellular scavenging capacity provably lead to increased stress tolerance. In response to different stress treatments the MsALR aldo-keto reductase gene in Medicago sativa showed increased transcription. Transgenic tobacco plants ectopically expressing the MsALR cDNA were more tolerant to dehydration stress and recovered better from damages caused by water deficit than the untransformed wild type plants and were more tolerant to heavy metal, salt, dehydration and UV-B stress. Reactive carbonyl levels were significantly lower in the transgenic plants under these stress conditions. Agronomical importance of these data was underlined by increased yield parameters of transgenic wheat plants under drought stress.
