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Male–female communication triggers calcium signatures during fertilization in Arabidopsis

Author

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  • Philipp Denninger

    (Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, Universität Regensburg
    Cell Networks-Cluster of Excellence and Centre for Organismal Studies (COS) Heidelberg, Universität Heidelberg)

  • Andrea Bleckmann

    (Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, Universität Regensburg)

  • Andreas Lausser

    (Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, Universität Regensburg)

  • Frank Vogler

    (Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, Universität Regensburg)

  • Thomas Ott

    (Institute of Genetics, Ludwig-Maximilians-Universität München)

  • David W. Ehrhardt

    (Carnegie Institution for Science)

  • Wolf B. Frommer

    (Carnegie Institution for Science)

  • Stefanie Sprunck

    (Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, Universität Regensburg)

  • Thomas Dresselhaus

    (Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, Universität Regensburg)

  • Guido Grossmann

    (Cell Networks-Cluster of Excellence and Centre for Organismal Studies (COS) Heidelberg, Universität Heidelberg
    Carnegie Institution for Science)

Abstract

Cell–cell communication and interaction is critical during fertilization and triggers free cytosolic calcium ([Ca2+]cyto) as a key signal for egg activation and a polyspermy block in animal oocytes. Fertilization in flowering plants is more complex, involving interaction of a pollen tube with egg adjoining synergid cells, culminating in release of two sperm cells and their fusion with the egg and central cell, respectively. Here, we report the occurrence and role of [Ca2+]cyto signals during the entire double fertilization process in Arabidopsis. [Ca2+]cyto oscillations are initiated in synergid cells after physical contact with the pollen tube apex. In egg and central cells, a short [Ca2+]cyto transient is associated with pollen tube burst and sperm cell arrival. A second extended [Ca2+]cyto transient solely in the egg cell is correlated with successful fertilization. Thus, each female cell type involved in double fertilization displays a characteristic [Ca2+]cyto signature differing by timing and behaviour from [Ca2+]cyto waves reported in mammals.

Suggested Citation

  • Philipp Denninger & Andrea Bleckmann & Andreas Lausser & Frank Vogler & Thomas Ott & David W. Ehrhardt & Wolf B. Frommer & Stefanie Sprunck & Thomas Dresselhaus & Guido Grossmann, 2014. "Male–female communication triggers calcium signatures during fertilization in Arabidopsis," Nature Communications, Nature, vol. 5(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5645
    DOI: 10.1038/ncomms5645
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    Cited by:

    1. Ronny Völz & William Harris & Heribert Hirt & Yong-Hwan Lee, 2022. "ROS homeostasis mediated by MPK4 and SUMM2 determines synergid cell death," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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