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

DOI

Bibliographic Information

Other Title
  • 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

Details 詳細情報について

  • CRID
    1390282680609092736
  • NII Article ID
    130006994050
  • DOI
    10.14841/jspp.2009.0.0818.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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