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Morphological characterisation of wheat (T. aestivum L.) egg cell protoplasts isolated from immature and overaged caryopses

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Abstract

 The morphological features and fine structure of wheat egg cell protoplasts isolated from premature (3 days prior to anthesis) and overaged (12 days after anthesis) caryopses were compared. Except for shape, the young egg cell protoplast showed the same morphological characteristics as the egg cell in planta at the time of anthesis. Young and adult egg cell protoplasts were spherical in shape. Polarity could not be identified exactly with the methods used. During aging, the egg cell increased considerably in volume. The adult egg showed the typical features (membrane blebbing, autophagous vacuoles) of programmed cell death. It appears that after a long life-span (about18 days) cells of the female gametophyte undergo apoptosis.

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Authors and Affiliations

  1. Agricultural Research Institute of the Hungarian Academy of Sciences, 2462 Martonvásár, Hungary e-mail: bea@fsnew.mgki.hu Fax +36–22–460–213, , , , , , HU

    Z. Pónya, I. Tímár & B. Barnabás

  2. Agricultural Biotechnology Center, 2100 Gödöllö, Hungary, , , , , , HU

    L. Szabó

  3. Plant Anatomy Department, Eötvös Lóránd University, Budapest, , , , ,

    Z. Kristóf

Authors
  1. Z. Pónya
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  2. I. Tímár
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  3. L. Szabó
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  4. Z. Kristóf
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  5. B. Barnabás
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Received: 19 August 1998 / Revision accepted 2 November 1998

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Pónya, Z., Tímár, I., Szabó, L. et al. Morphological characterisation of wheat (T. aestivum L.) egg cell protoplasts isolated from immature and overaged caryopses. Sex Plant Reprod 11, 357–359 (1999). https://doi.org/10.1007/s004970050164

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  • DOI: https://doi.org/10.1007/s004970050164

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