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http://dx.doi.org/10.5010/JPB.2009.36.1.075

Selection of transgenic sweetpotato plants expressing 2-Cys peroxiredoxin with enhanced tolerance to oxidative stress  

Kim, Myoung-Duck (Environmental Biotechnology Research Center Korea Research Institute of Bioscience and Biotechnology (KRIBB))
Yang, Kyoung-Sil (Environmental Biotechnology Research Center Korea Research Institute of Bioscience and Biotechnology (KRIBB))
Kwon, Suk-Yoon (Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB))
Lee, Sang-Yeol (Division of Applied Life Science, EB-NCRC and Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University)
Kwak, Sang-Soo (Environmental Biotechnology Research Center Korea Research Institute of Bioscience and Biotechnology (KRIBB))
Lee, Haeng-Soon (Environmental Biotechnology Research Center Korea Research Institute of Bioscience and Biotechnology (KRIBB))
Publication Information
Journal of Plant Biotechnology / v.36, no.1, 2009 , pp. 75-80 More about this Journal
Abstract
In order to develop transgenic sweetpotato plants [Ipomoea batatas (L.) Lam. cv. Yulmi] with enhanced tolerance to oxidative stress, we constructed transformation vectors expressing 2-Cys peroxiredoxin (Prx) gene under the control of the stress-inducible SWPA2 or enhanced 35S promoter (named as SP or EP). Transgenic sweetpotato plants were attempted to generate from embryogenic calli using an Agrobacterium-mediated transformation system. Embryogenic calli gave rise to somatic embryos and then converted into plantlets on MS medium containing 100 mg/L kanamycin. Transgenic plants were regenerated in the same medium. Southern blot analysis confirmed that the Prx gene was inserted into the genome of the plants. To further study we selected the transgenic plant lines with enhanced tolerance against methyl viologen (MV). When sweetpotato leaf discs were subjected to methyl MV at $20{\mu}M$, transgenic plants showed about 40% higher tolerance than non-transgenic or empty vector-transformed plants.
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