Overexpression of Os <I>BOR1</I>, a rice efflux boron transporter gene improved xylem loading of boron and grain yields in rice under the boron deficient condition
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- Uraguchi Shimpei
- Biotech. Res. Cent., Univ. of Tokyo
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- Hanaoka Hideki
- Biotech. Res. Cent., Univ. of Tokyo
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- Aizawa Kayoko
- Biotech. Res. Cent., Univ. of Tokyo
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- Kato Yuichi
- Biotech. Res. Cent., Univ. of Tokyo
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- Nakagawa Yuko
- Biotech. Res. Cent., Univ. of Tokyo Iwate Biotech. Res. Cent.
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- Fujiwara Toru
- Biotech. Res. Cent., Univ. of Tokyo SORST, JST
Bibliographic Information
- Other Title
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- イネのホウ素輸送体BOR1の過剰発現によるホウ素欠乏条件下での収量の向上
Abstract
In rice, a boron efflux transporter OsBOR1 mediates efficient boron translocation from root to shoot. We herein generated three independent lines of transgenic rice plants expressing rice BOR1-GFP under the control of the cauliflower mosaic virus 35S RNA promoter. Real-time RT-PCR analysis showed that BOR1-GFP was highly expressed in two out of the three lines and was slightly expressed in the other line. The boron concentration in xylem sap was 1.8-1.9 times higher in two lines over-expressing BOR1-GFP than in non-transgenic plants. The grain yields under the boron deficient condition was 1.7-1.8 times greater in two over-expressing lines than in non-transgenic plants and another transgenic line with slight expression. These results suggest that enhanced expression of the rice boron transporter BOR1 enhanced root-to-shoot translocation of boron, which resulted in improved grain yields under boron deficient condition.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2009 (0), 0818-0818, 2009
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390282680609092736
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- NII Article ID
- 130006994050
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed