Plant Cell Reports

, Volume 25, Issue 12, pp 1380–1386

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

  • Li Tang
  • Suk-Yoon Kwon
  • Sun-Hyung Kim
  • Jin-Seog Kim
  • Jung Sup Choi
  • Kwang Yun Cho
  • Chang K. Sung
  • Sang-Soo Kwak
  • Haeng-Soon Lee
Physiology and Biochemistry

DOI: 10.1007/s00299-006-0199-1

Cite this article as:
Tang, L., Kwon, SY., Kim, SH. et al. Plant Cell Rep (2006) 25: 1380. doi:10.1007/s00299-006-0199-1

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.

Keywords

Antioxidant enzyme Environmental stress Molecular breeding Potato Transgenic plant 

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Li Tang
    • 1
    • 3
  • Suk-Yoon Kwon
    • 1
  • Sun-Hyung Kim
    • 1
  • Jin-Seog Kim
    • 2
  • Jung Sup Choi
    • 2
  • Kwang Yun Cho
    • 2
  • Chang K. Sung
    • 3
  • Sang-Soo Kwak
    • 1
  • Haeng-Soon Lee
    • 1
  1. 1.Environmental Biotechnology Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB)DaejeonKorea
  2. 2.Biofunction Research TeamBioorganic Science Division, Korea Research Institute of Chemical Technology (KRICT)DaejeonKorea
  3. 3.Department of Food BiotechnologyChungnam National University, YuseongDaejeonKorea

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