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Title 

Enhanced tolerance of transgenic potato plants expressing both superoxide dismutase and ascorbate peroxidase in chloroplasts against oxidative stress and high temperature

Authors 

L TangSuk Yoon KwonSun Hyung KimJ S KimJ S ChoiK Y ChoC K SungSang Soo KwakHaeng Soon Lee

Publisher 

Springer Verlag (Germany)

Issue Date 

2006

Citation 

Plant Cell Reports, vol. 25, no. 12, pp. 1380-1386

Keywords 

antioxidant enzymeenvironmental stressmolecular breedingpotatotransgenic plantpotato plantsplants (botany)ascorbate peroxidase

Abstract 

Oxidative stress is a major damaging factor for plants exposed to environmental stresses. In order to develop transgenic potato plants with enhanced tolerance to environmental stress, the genes of both Cu/Zn superoxide dismutase and ascorbate peroxidase were expressed in chloroplasts under the control of an oxidative stress-inducible SWPA2 promoter (referred to as SSA plants). SSA plants showed enhanced tolerance to 250 μM methyl viologen, and visible damage in SSA plants was one-fourth that of non-transgenic (NT) plants that were almost destroyed. In addition, when SSA plants were treated with a high temperature of 42°C for 20 h, the photosynthetic activity of SSA plants decreased by only 6%, whereas that of NT plants decreased by 29%. These results suggest that the manipulation of the antioxidative mechanism of the chloroplasts may be applied in the development of industrial transgenic crop plants with increased tolerance to multiple environmental stresses.

ISSN 

0721-7714

Link 

http://dx.doi.org/10.1007/s00299-006-0199-1

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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