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Über den Einfluss von Vorbelichtung auf die Plastiden-Entwicklung in den Primärblättern γ-Bestrahlter Etiolierter Bohnenkeimlinge

The effect of pre-illumination on the development of plastids in primary leaves of γ-irradiated etiolated bean seedlings

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Summary

It has been shown that a short pre-illumination (1–30 min) of etiolated bean seedlings considerably reduces the delay of grana development in the plastids caused by gamma radiation. As in non-irradiated etiolated material the grana formation is stimulated by an equal pre-illumination, it may be concluded that the observed phenomenon is not a consequence of protection or restoration processes but of a photomorphogenic effect which is independent even of gamma radiation.

Zusammenfassung

Es wurde festgestellt, daß eine kurze Vorbelichtung (1–30 min) etiolierter Bohnenkeimlinge, die durch die γ-Bestrahlung hervorgerufene Verzögerung der Granaentwicklung deutlich herabsetzt. Da beim unbestrahlten etiolierten Material die gleiche Vorbelichtung eine Beschleunigung der Granabildung hervorruft, wird der Schluß gezogen, daß es sich bei der beobachteten Erscheinung um keinen Schutz-oder Restaurationseffekt handelt, sondern um einen photomorphogenen Effekt, der selbst von der γ-Strahlung unabhängig ist.

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Literatur

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Wrischer, M., Devidé, Z. Über den Einfluss von Vorbelichtung auf die Plastiden-Entwicklung in den Primärblättern γ-Bestrahlter Etiolierter Bohnenkeimlinge. Planta 73, 319–323 (1967). https://doi.org/10.1007/BF00385377

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  • DOI: https://doi.org/10.1007/BF00385377

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