The Photocontrol of Spore Germination in the Fern Ceratopteris richardii

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概要

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• This paper describes how different wavelengths of light regulate spore germination in the fern Ceratopteris richardii. This species does not exhibit any dark germination. Maximum photosensitivity of the spores is reached 7 to 10 d after imbibition. An increase in the red light fluence above the threshold fluence of 10^<16> quanta・m^<-2> leads to a corresponding increase in germination. In sequential irradiation experiments, far-red light can reverse this red light-mediated germination to the level observed with the far-red light control. Blue light fluences above 10^<20> quanta・m^<-2> can also block the germination response to red light. Moreover, this antagonistic effect of blue light is not reversed by subsequent irradiation with red light. It is therefore concluded that phytochrome and a distinct blue light photoreceptor control C. richardii spore germination. These interpretations are entirely consistent with the published literature on other fern genera.

• 日本植物生理学会の論文

著者

• Hickok L.

  Department Of Botany University Of Tennessee

• Cooke T.

  Department of Botany, University of Maryland

• Racusen R.

  Department of Botany, University of Maryland

• Warne T.

  Department of Botany, University of Tennessee

• Warne T.

  Department Of Botany University Of Tennessee

• Racusen R.

  Department Of Botany University Of Maryland

• Cooke T.

  Department Of Botany University Of Maryland

関連論文

• The Photocontrol of Spore Germination in the Fern Ceratopteris richardii

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