Physiological Function of Phytochromes in Seminal Root Growth of Rice Seedlings

DOI

Bibliographic Information

Other Title
  • イネ幼植物体の種子根生育におけるフィトクロムの作用

Abstract

Phytochrome apoprotein is existing in roots of many plants, but its molecular specific function has not been well characterized except for phototropism. We examined photoregulation of root growth using phytochrome mutants in rice. When standard rice plants (Nipponbare) were grown for 7days in darkness, the seminal root grew straight towards geotropic orientation and reached a length of 8cm or more. In contrast, when the seedlings were grown under the continuous white light irradiated condition, the root growth was inhibited when the length reached approximately 2cm. In addition, the distal part of the seminal root showed a peculiar coiled shape. This response depended on the nitrogen concentration in the range of 0.1-10mM. These and the other results of physiological experiments and the Western blot analysis strongly suggested that phytochrome molecular species existing in seminal root perceive light and control their morphogenesis. This work was partly supported by a grant of IP-1006.

Journal

Details 詳細情報について

  • CRID
    1390282680609021056
  • NII Article ID
    130006993939
  • DOI
    10.14841/jspp.2006.0.727.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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