Expression of rice 45S rRNA promotes cell proliferation, leading to enhancement of growth in transgenic tobacco
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- Makabe So
- Graduate School of Horticulture, Chiba University
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- Yamori Wataru
- Graduate School of Science, The University of Tokyo
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- Kong Kynet
- Cambodian Agricultural Research and Development Institute
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- Niimi Hiroyuki
- Graduate School of Horticulture, Chiba University
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- Nakamura Ikuo
- Graduate School of Horticulture, Chiba University
書誌事項
- タイトル別名
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- Expression of rice <i>45S rRNA</i> promotes cell proliferation, leading to enhancement of growth in transgenic tobacco
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An increase in plant biomass production is desired to reduce emission of carbon dioxide emissions and arrest global climate change because it will provide a more source of energy production than fossil fuels. Recently, we found that forced expression of the rice 45S rRNA gene increased aboveground growth by ca. 2-fold in the transgenic Arabidopsis plants. Here, we created transgenic tobacco plants harboring the rice 45S rRNA driven by the maize ubiquitin promoter (UbiP::Os45SrRNA) or cauliflower mosaic virus 35S promoter (35SP::Os45SrRNA). In 35SP::Os45SrRNA and UbiP::Os45SrRNA transgenic tobacco plants, the leaf length and size were increased compared with control plants, leading to an increase of aboveground growth (dry weight) up to 2-fold at the early stage of seedling development. Conversely, leaf physiological traits, such as photosynthetic capacity, stomatal characteristics, and chlorophylls and RuBisCO protein contents, were similar between the transgenic and control plants. Flow cytometry analysis indicated that the transgenic plants had enhanced cell-proliferation especially in seedling root and leaf primordia. Microarray analysis revealed that genes encoding transcription factors, such as GIGANTEA-like, were more than 2-fold up-regulated in the transgenic plants. Although the mechanism underlying the increased growth has yet to be elucidated, this strategy could be used to increase biomass production in cereals, vegetables, and bio-energy plants.
収録刊行物
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- Plant Biotechnology
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Plant Biotechnology 34 (1), 29-38, 2017
日本植物バイオテクノロジー学会
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詳細情報 詳細情報について
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- CRID
- 1390001204328993536
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- NII論文ID
- 130005519606
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- NII書誌ID
- AA11250821
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- ISSN
- 13476114
- 13424580
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- NDL書誌ID
- 028091797
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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