Endogenous light-on rhythm in respiration of a long-day duckweed, Lemna gibba G3 III. Relationship to frond production

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概要

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• Relationship between the O_2-uptake rhythm and frond production in a long-day duckweed, Lemna gibba G_3, was investigated. The rate of frond production and the amplitude of the rhythm were dependent on light intensity. Photosynthetic inhibitors, CMU and DCMU, at concentrations effective in stopping frond production, abolished the O_2-uptake rhythm after a lag of 1 day. In the presence of inhibitors of protein and RNA syntheses, ETH, CH and TU, at concentrations which brought about complete inhibition of frond production, the O_2-uptake rhythm disappeared. FUdR, an inhibitor of DNA synthesis, did not elimi-nate the rhythm although it suppressed frond production. This indicates a rather indirect correlation between the rhythm and the rate of frond production which, in turn, is probably related to photosynthesis. The rhythm may be more directly cor-related with the cell expansion.

• 日本植物生理学会の論文

著者

• Miyata Hisao

  Biological Institute L'aculty Of Science Nagoya University

• Miyata Hisao

  Biological Institute Faculty Of Science Nagoya University

関連論文

• Endogenous light-on rhythm in respiration of a long-day duckweed, Lemna gibba G_3
• Rhythms in respiratory metabolism of Lemna gibba G_3 under continuous illumination
• Endogenous light-on rhythm in respiration of a long-day duckweed, Lemna gibba G3 III. Relationship to frond production
• Endogenous light-on rhythm in respiration of a long-day duckweed, Lemna gibba G3 II. On basic and rhythmic components of the rhythm

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