Transgenic plants: An insight into oxidative stress tolerance mechanisms |
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Authors: | El?bieta Ku?niak |
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Institution: | (1) Department of Plant Physiology and Biochemistry, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland |
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Abstract: | Environmental stresses considerably limit plant productivity. At the molecular level the negative effect of stress is often
mediated by reactive oxygen species-initiated oxidative damage. Hence, it was hypothesised that increased tolerance to several
environmental constraints could be achieved through enhanced tolerance to oxidative stress. In recent years much effort has
been undertaken to improve oxidative stress tolerance by transforming plants with native or bacterial genes coding either
for reactive oxygen species-scavenging enzymes or for enzymes modulating the cellular antioxidant capacity. This review deals
with data on transgenic plants with altered antioxidant capacity and focuses on the new insight into the antioxidant defence
mechanism given by this type of experimental model. |
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Keywords: | ascorbate enzymatic antioxidants glutathione oxidative stress tolerance transgenic plants |
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