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Neurobiological View of Plants and Their Body Plan

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Communication in Plants

Abstract

All principal metabolic biochemical pathways are conserved in animal and plant cells. Besides this, plants have been shown to be identical to animals from several other rather unexpected perspectives. For their reproduction, plants use identical sexual processes based on fusing sperm cells and oocytes. Next, plants attacked by pathogens develop immunity using processes and mechanisms corresponding to those operating in animals. Last, but not least, both animals and plants use the same molecules and pathways to drive their circadian rhythms. Currently, owing to the critical mass of new data which has accumulated, plant science has reached a crossroads culminating in the emergence of plant neurobiology as the most recent area of plant sciences. Plants perform complex information processing and use not only action potentials but also synaptic modes of cell-cell communication. Thus, the term ‘plant neurobiology’ appears to be justified. In fact, the word neuron was taken by animal neurobiologists from Greek, where the original meaning of this word is ‘vegetal fibre’. Several surprises emerge when applying a ‘neurobiological’ perspective to illustrate how the plant tissues and the plant body are organized. Firstly, root apices are specialized not only for the uptake of nutrients but they also seem to support neuronal-like activities based on plant synapses. These synapses transport auxin via synaptic processes, suggesting that auxin is a plant-specific neurotransmitter. Altogether, root apices emerge as command centres and represent the anterior pole of the plant body. In accordance with this perspective, shoot apices act as the posterior pole. They are specialized for sexual reproduction and the excretion of metabolic products via hydathodes, trichomes, and stomata. Next, vascular elements allow the rapid spread of hydraulic signals and classical action potentials resembling nerves. As plants are capable of learning and they take decisions about their future activities according to the actual environmental conditions, it is obvious that they possess a complex apparatus for the storage and processing of information.

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Authors and Affiliations

  1. Institute of Cellular and Molecular Botany, University of Bonn, Kirschallee 1, 53115, Bonn, Germany

    František Baluška

  2. Department of Plant Cell Biology, Institute of Cellular and Molecular Botany, Rheinische Friedrich-Wilhelms University Bonn, Kirschallee 1, 53115, Bonn, Germany

    Dieter Volkmann

  3. Institute of Botany, Slovak Academy of Sciences, Dubravska 14, 84223, Bratislava, Slovak Republic

    Andrej Hlavacka

  4. Department of Horticulture, Electrophysiology Laboratory, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino, Italy

    Stefano Mancuso

  5. School of Biological Sciences, University of Bristol, Woodland Road, Clifton, Bristol, BS8 1UG, UK

    Peter W. Barlow

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  1. František Baluška
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  2. Dieter Volkmann
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  3. Andrej Hlavacka
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  4. Stefano Mancuso
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Editors and Affiliations

  1. Institute of Cellular and Molecular Botany, University of Bonn, Kirschallee 1, 53115, Bonn, Germany

    František Baluška  & Dieter Volkmann  & 

  2. Department of Horticulture Electrophysiology Laboratory, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino, Italy

    Stefano Mancuso

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Baluška, F., Volkmann, D., Hlavacka, A., Mancuso, S., Barlow, P.W. (2006). Neurobiological View of Plants and Their Body Plan. In: Baluška, F., Mancuso, S., Volkmann, D. (eds) Communication in Plants. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-28516-8_2

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