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Ji CY, Jin R, Xu Z, Kim HS, Lee CJ, Kang L, Kim SE, Lee HU, Lee JS, Kang CH, Chi YH, Lee SY, Xie Y, Li H, Ma D, Kwak SS. Overexpression of Arabidopsis P3B increases heat and low temperature stress tolerance in transgenic sweetpotato. BMC Plant Biol 2017; 17:139. [PMID: 28806972 PMCID: PMC5557506 DOI: 10.1186/s12870-017-1087-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/31/2017] [Indexed: 05/05/2023]
Abstract
BACKGROUND Sweetpotato (Ipomoea batatas [L.] Lam) is suitable for growth on marginal lands due to its abiotic stress tolerance. However, severe environmental conditions including low temperature pose a serious threat to the productivity and expanded cultivation of this crop. In this study, we aimed to develop sweetpotato plants with enhanced tolerance to temperature stress. RESULTS P3 proteins are plant-specific ribosomal P-proteins that act as both protein and RNA chaperones to increase heat and cold stress tolerance in Arabidopsis. Here, we generated transgenic sweetpotato plants expressing the Arabidopsis ribosomal P3 (AtP3B) gene under the control of the CaMV 35S promoter (referred to as OP plants). Three OP lines (OP1, OP30, and OP32) were selected based on AtP3B transcript levels. The OP plants displayed greater heat tolerance and higher photosynthesis efficiency than wild type (WT) plants. The OP plants also exhibited enhanced low temperature tolerance, with higher photosynthesis efficiency and less membrane permeability than WT plants. In addition, OP plants had lower levels of hydrogen peroxide and higher activities of antioxidant enzymes such as peroxidase and catalase than WT plants under low temperature stress. The yields of tuberous roots and aerial parts of plants did not significantly differ between OP and WT plants under field cultivation. However, the tuberous roots of OP transgenic sweetpotato showed improved storage ability under low temperature conditions. CONCLUSIONS The OP plants developed in this study exhibited increased tolerance to temperature stress and enhanced storage ability under low temperature compared to WT plants, suggesting that they could be used to enhance sustainable agriculture on marginal lands.
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Affiliation(s)
- Chang Yoon Ji
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
- Department of Environmental Biotechnology, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Rong Jin
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
- Department of Environmental Biotechnology, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
- Sweetpotato Research Center, Jiangsu Academy of Agricultural Science, Xuhuai Road, Xuzhou, Jiangsu, 221131, China
| | - Zhen Xu
- Sweetpotato Research Center, Jiangsu Academy of Agricultural Science, Xuhuai Road, Xuzhou, Jiangsu, 221131, China
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
| | - Chan-Ju Lee
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
- Department of Environmental Biotechnology, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Le Kang
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
- Department of Environmental Biotechnology, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - So-Eun Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
- Department of Environmental Biotechnology, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Hyeong-Un Lee
- Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, Muan, 58545, South Korea
| | - Joon Seol Lee
- Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, Muan, 58545, South Korea
| | - Chang Ho Kang
- Division of Applied Life Science (BK21 Plus program) and Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, 501 Jinjudae-ro, Jinju, 52828, South Korea
| | - Yong Hun Chi
- Division of Applied Life Science (BK21 Plus program) and Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, 501 Jinjudae-ro, Jinju, 52828, South Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21 Plus program) and Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, 501 Jinjudae-ro, Jinju, 52828, South Korea
| | - Yiping Xie
- Sweetpotato Research Center, Jiangsu Academy of Agricultural Science, Xuhuai Road, Xuzhou, Jiangsu, 221131, China
| | - Hongmin Li
- Sweetpotato Research Center, Jiangsu Academy of Agricultural Science, Xuhuai Road, Xuzhou, Jiangsu, 221131, China
| | - Daifu Ma
- Sweetpotato Research Center, Jiangsu Academy of Agricultural Science, Xuhuai Road, Xuzhou, Jiangsu, 221131, China
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea.
- Department of Environmental Biotechnology, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea.
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