NDLI: Enhanced tolerance of transgenic potato plants overexpressing nucleoside diphosphate kinase 2 against multiple environmental stresses

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Enhanced tolerance of transgenic potato plants overexpressing nucleoside diphosphate kinase 2 against multiple environmental stresses

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Enhanced tolerance of transgenic potato plants overexpressing nucleoside diphosphate kinase 2 against multiple environmental stresses

Content Provider	Springer Nature Link
Author	Tang, Li Kim, Myoung Duck Yang, Kyoung Sil Kwon, Suk Yoon Kim, Sun Hyung Kim, Jin Seog Yun, Dae Jin Kwak, Sang Soo Lee, Haeng Soon
Copyright Year	2007
Abstract	In plants, nucleoside diphosphate kinase 2 (NDPK2) is known to regulate the expression of antioxidant genes. In this study, we developed transgenic potato plants (Solanum tuberosum L. cv. Atlantic) expressing Arabidopsis NDPK2 (AtNDPK2) gene in cytosols under the control of an oxidative stress-inducible SWPA2 promoter (referred to as SN plants) or enhanced CaMV 35S promoter (EN plants) and evaluated their tolerance to various environmental stress, including methyl viologen (MV)-mediated oxidative stress, high temperature, and salt stress. When 250 μM MV was sprayed to whole plants, plants expressing NDPK2 showed significantly an enhanced tolerance compared to non-transgenic (NT) plants. SN plants and EN plants showed 51% and 32% less visible damage than NT plants, respectively. Transcript level of AtNDPK2 gene and NDPK2 activity in SN plants following MV treatment well reflected the plant phenotype. Ascorbate peroxidase (APX) activity was also increased in MV-treated SN plants. In addition, SN plants showed enhanced tolerance to high temperature at 42°C. The photosynthetic activity of SN plants after treatment of high temperature was decreased by about 10% compared to the plants grown at 25°C, whereas that of NT plants declined by 30%. When treated with 80 mM NaCl onto the plantlets, both SN plants and EN plants also showed a significant reduced damage in root growth. These results indicate that overexpression of NDPK2 under the stress-inducible SWPA2 promoter might efficiently regulate the oxidative stress derived from various environmental stresses.
Starting Page	705
Ending Page	715
Page Count	11
File Format	PDF
ISSN	09628819
Journal	Transgenic Research
Volume Number	17
Issue Number	4
e-ISSN	15739368
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-11-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ascorbate peroxidase High temperature Molecular breeding Oxidative stress Photosynthetic activity Salt stress Human Genetics Plant Sciences Animal Genetics and Genomics Plant Genetics & Genomics Molecular Medicine
Content Type	Text
Resource Type	Article
Subject	Genetics Animal Science and Zoology Biotechnology Agronomy and Crop Science

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