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Improvement of Water Stress Tolerance of Tuberous Begonia (Begonia×tuberhybrida) by OsmiR393a Gene Transformation

Received: 14 August 2021    Accepted: 22 September 2021    Published: 29 September 2021
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Abstract

The genus Begonia is greatly affected by abiotic stresses, which lead to losses in greenhouse production and flower longevity. Obtaining more-tolerant plants is a very important breeding goal in ornamentals. To achieve abiotic tolerant Begonia×tuberhybrida, OsmiR393a, a miRNA involved in the tolerance of plants to abiotic stresses, was introduced using Agrobacterium-mediated transformation. Explants were cultured on modified MS medium supplemented with 1.0 mg/L BA, 0.5 mg/L IAA, and 5 mg/L hygromycin for transgenic selection and regeneration. Stable integration of the transgene was verified in putatively transformed plants by PCR screening. When fresh flower longevity was evaluated by the period from bloom to wilting of 3 petals, flower longevity of transgenic line was 8 d longer than control. Furthermore, 15 days after stress treatment, petals of control plants wilted, whereas transgenic lines remained. This results shows that expressing OsmiR393a could extend only flower longevity without affecting flower type under water stress in Begonia×tuberhybrida. In addition, the transgenic plants displayed lower transpiration rate, higher proline content and chlorophyll content when subjected to water stress. These results suggest OsmiR393a may improve water stress tolerance of Begonia×tuberhybrida by regulating different pathways in response to the stress conditions and miR393a is conservatized between monocotyledon and dicotyledon.

Published in Journal of Plant Sciences (Volume 9, Issue 5)
DOI 10.11648/j.jps.20210905.14
Page(s) 253-261
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Agrobacterium, miR393a, Transformation, Tuberous Begonia, Water Stress Tolerance

References
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    Tongsu Ho, Haksong Pak, Sokjun Ri, Kang Kim, Namhyok Mun. (2021). Improvement of Water Stress Tolerance of Tuberous Begonia (Begonia×tuberhybrida) by OsmiR393a Gene Transformation. Journal of Plant Sciences, 9(5), 253-261. https://doi.org/10.11648/j.jps.20210905.14

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    ACS Style

    Tongsu Ho; Haksong Pak; Sokjun Ri; Kang Kim; Namhyok Mun. Improvement of Water Stress Tolerance of Tuberous Begonia (Begonia×tuberhybrida) by OsmiR393a Gene Transformation. J. Plant Sci. 2021, 9(5), 253-261. doi: 10.11648/j.jps.20210905.14

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    AMA Style

    Tongsu Ho, Haksong Pak, Sokjun Ri, Kang Kim, Namhyok Mun. Improvement of Water Stress Tolerance of Tuberous Begonia (Begonia×tuberhybrida) by OsmiR393a Gene Transformation. J Plant Sci. 2021;9(5):253-261. doi: 10.11648/j.jps.20210905.14

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  • @article{10.11648/j.jps.20210905.14,
      author = {Tongsu Ho and Haksong Pak and Sokjun Ri and Kang Kim and Namhyok Mun},
      title = {Improvement of Water Stress Tolerance of Tuberous Begonia (Begonia×tuberhybrida) by OsmiR393a Gene Transformation},
      journal = {Journal of Plant Sciences},
      volume = {9},
      number = {5},
      pages = {253-261},
      doi = {10.11648/j.jps.20210905.14},
      url = {https://doi.org/10.11648/j.jps.20210905.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20210905.14},
      abstract = {The genus Begonia is greatly affected by abiotic stresses, which lead to losses in greenhouse production and flower longevity. Obtaining more-tolerant plants is a very important breeding goal in ornamentals. To achieve abiotic tolerant Begonia×tuberhybrida, OsmiR393a, a miRNA involved in the tolerance of plants to abiotic stresses, was introduced using Agrobacterium-mediated transformation. Explants were cultured on modified MS medium supplemented with 1.0 mg/L BA, 0.5 mg/L IAA, and 5 mg/L hygromycin for transgenic selection and regeneration. Stable integration of the transgene was verified in putatively transformed plants by PCR screening. When fresh flower longevity was evaluated by the period from bloom to wilting of 3 petals, flower longevity of transgenic line was 8 d longer than control. Furthermore, 15 days after stress treatment, petals of control plants wilted, whereas transgenic lines remained. This results shows that expressing OsmiR393a could extend only flower longevity without affecting flower type under water stress in Begonia×tuberhybrida. In addition, the transgenic plants displayed lower transpiration rate, higher proline content and chlorophyll content when subjected to water stress. These results suggest OsmiR393a may improve water stress tolerance of Begonia×tuberhybrida by regulating different pathways in response to the stress conditions and miR393a is conservatized between monocotyledon and dicotyledon.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Improvement of Water Stress Tolerance of Tuberous Begonia (Begonia×tuberhybrida) by OsmiR393a Gene Transformation
    AU  - Tongsu Ho
    AU  - Haksong Pak
    AU  - Sokjun Ri
    AU  - Kang Kim
    AU  - Namhyok Mun
    Y1  - 2021/09/29
    PY  - 2021
    N1  - https://doi.org/10.11648/j.jps.20210905.14
    DO  - 10.11648/j.jps.20210905.14
    T2  - Journal of Plant Sciences
    JF  - Journal of Plant Sciences
    JO  - Journal of Plant Sciences
    SP  - 253
    EP  - 261
    PB  - Science Publishing Group
    SN  - 2331-0731
    UR  - https://doi.org/10.11648/j.jps.20210905.14
    AB  - The genus Begonia is greatly affected by abiotic stresses, which lead to losses in greenhouse production and flower longevity. Obtaining more-tolerant plants is a very important breeding goal in ornamentals. To achieve abiotic tolerant Begonia×tuberhybrida, OsmiR393a, a miRNA involved in the tolerance of plants to abiotic stresses, was introduced using Agrobacterium-mediated transformation. Explants were cultured on modified MS medium supplemented with 1.0 mg/L BA, 0.5 mg/L IAA, and 5 mg/L hygromycin for transgenic selection and regeneration. Stable integration of the transgene was verified in putatively transformed plants by PCR screening. When fresh flower longevity was evaluated by the period from bloom to wilting of 3 petals, flower longevity of transgenic line was 8 d longer than control. Furthermore, 15 days after stress treatment, petals of control plants wilted, whereas transgenic lines remained. This results shows that expressing OsmiR393a could extend only flower longevity without affecting flower type under water stress in Begonia×tuberhybrida. In addition, the transgenic plants displayed lower transpiration rate, higher proline content and chlorophyll content when subjected to water stress. These results suggest OsmiR393a may improve water stress tolerance of Begonia×tuberhybrida by regulating different pathways in response to the stress conditions and miR393a is conservatized between monocotyledon and dicotyledon.
    VL  - 9
    IS  - 5
    ER  - 

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Author Information
  • Department of Genetics, Faculty of Life Science, Kim Il Sung University, Pyongyang, DPR of Korea

  • Department of Genetics, Faculty of Life Science, Kim Il Sung University, Pyongyang, DPR of Korea

  • Department of Genetics, Faculty of Life Science, Kim Il Sung University, Pyongyang, DPR of Korea

  • Department of Genetics, Faculty of Life Science, Kim Il Sung University, Pyongyang, DPR of Korea

  • Department of Genetics, Faculty of Life Science, Kim Il Sung University, Pyongyang, DPR of Korea

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