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Spatiotemporal dynamics of the electrical network activity in the root apex

  Articoli su Riviste JCR/ISI  (anno 2009)

Autori:  Masi E., Ciszak M., Stefano G., Renna L., Azzarello E., Pandolfi C., Mugnai S., Baluska F., Arecchi F.T., Mancuso S

Affiliazione Autori:  Department of Horticulture, International Laboratory of Plant Neurobiology, University of Florence, Viale delle idee 30, 50019 Sesto Fiorentino (FI), Italy; CNR-Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy; Institut fur Zellulare und Molekulare Botanik, University of Bonn, Kirschallee 1, Bonn, Germany; Department of Physics, University of Florence, Via G. Sansone 1, 50019 Sesto Fiorentino (FI), Italy

Riassunto:  The study of electrical network systems, integrated with chemical signaling networks, is becoming a common trend in contemporary biology. Classical techniques are limited to the assessment of signals from doublets or triplets of cells at a fixed temporal bin width. At present, full characteristics of the electrical network distribution and dynamics in plant cells and tissues has not been established. Here, a 60-channels multielectrode array (MEA) is applied to study spatiotemporal characteristics of the electrical network activity of the root apex. Both intense spontaneous electrical activities and stimulation-elicited bursts of locally propagating electrical signals have been observed. Propagation of the spikes indicates the existence of excitable traveling waves in plants, similar to those observed in non-nerve electrogenic tissues of animals. Obtained data reveal synchronous electric activities of root cells emerging in a specific root apex region. The dynamic electrochemical activity of root apex cells is proposed to continuously integrate internal and external signaling for developmental adaptations in a changing environment.

Rivista/Giornale:  PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume n.:  106 (10)      Pagine da: 4048  a: 4053
Ulteriori informazioni:  This work was supported by the Ente Cassa di Risparmio di Firenze (S. Mancuso) and a Marie Curie Intra-European Fellowship within the 6th European Community Framework Program (to M. C.).
DOI: 10.1073/pnas.0804640106

*Impact Factor della Rivista: (2009) 9.432   *Citazioni: 65
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  14/07/2019

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