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Abscisic acid promotes lectin biosynthesis in developing and germinating rice embryos

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Abstract

Immature rice (Oryza sativa, L) embryos isolated about 12 days post anthesis are fully able to develop into young seedlings when cultured in vitro. Concomitantly, they rapidly loose their lectin synthesis activity. Abscisic acid added to the nutrient medium prevents precocious germination of the immature embryos and simultaneously strongly promotes lectin biosynthesis activity. Similarly, abscisic acid keeps mature embryos grown in a nutrient medium in a dormant state and maintains their lectin synthesis activity, whereas control embryos rapidly germinate but also quickly loose their lectin synthesis activity. It appears, therefore, that rice lectin is typically synthesized in embryos which are kept in a dornant state.

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Abbreviations

ABA:

abscisic acid

GA3 :

gibberellic acid

WGA:

wheat germ agglutinin

DPA:

days post anthesis

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Authors and Affiliations

  1. Laboratorium voor Plantenbiochemie, KULeuven, Kardinaal Mercierlann, 92, B-3030, Leuven, Belgium

    Hetta M. Stinissen & Willy J. Peumans

  2. Laboratorium voor Tropische Plantenteelt, KULeuven, Kardinaal Mercierlaan, 92, B-3030, Leuven, Belgium

    E. De Langhe

Authors
  1. Hetta M. Stinissen
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  2. Willy J. Peumans
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  3. E. De Langhe
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Communicated by D. von Wettstein

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Stinissen, H.M., Peumans, W.J. & De Langhe, E. Abscisic acid promotes lectin biosynthesis in developing and germinating rice embryos. Plant Cell Reports 3, 55–59 (1984). https://doi.org/10.1007/BF00270971

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  • DOI: https://doi.org/10.1007/BF00270971

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