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Dopamine and Their Antagonist Modulates Ion Transport and Cytoplasmic Streaming in Chara Cells
Published in Akula Ramakrishna, Victoria V. Roshchina, Neurotransmitters in Plants, 2018
Anatolii A. Kataev, Olga M. Zherelova, V.M. Grischenko, R.Sh. Shtanchaev
In addition to changes in the electrophysiological characteristics in C. corallina cells, we also observed significant changes in the velocity of the cytoplasmic streaming, an important parameter characterizing the physiological state of a plant cell (Verchot-Lubicz, Goldstein, 2010). Using a previously developed technique (Kataev et al., 2012), we found that haloperidol not only slows down the cytoplasmic streaming in C. corallina cells but can also block it completely (Figure 11.9). After the drug was removed from the bathing solution, the cytoplasmic streaming was rapidly restored (Figure 11.9, curve 3). In control cells, the velocity of cytoplasmic streaming remained constant for 72 h. It should be pointed out that in presence of 60 µM haloperidol considerable change of resting potential (Vm) and membrane resistance (Rm) was observed (Figure 11.10).
Bio-acoustic signaling; exploring the potential of sound as a mediator of low-dose radiation and stress responses in the environment
Published in International Journal of Radiation Biology, 2022
Bruno F. E. Matarèse, Jigar Lad, Colin Seymour, Paul N. Schofield, Carmel Mothersill
The details of a plant acoustic perception apparatus are as yet unknown but it has been suggested they may similar to the way outer hair cells function in mammals, by altering membrane potentials of subcellular structures. Altering cell membrane and cell wall potentials have been shown to produce acoustic waves from kHz to THz range (Gagliano et al. 2012b), myosin is also believed to be involved as it can produce mechanical vibrations within cells by sliding against actin filaments (Gagliano 2013). These vibrations can then propagate through cytoplasm and create a vibrational cascade with surrounding cells causing cytoplasmic streaming. A process known as coherent excitation, where multiple cells work collectively could also produce sound signals in frequencies between 150 and 200kHz (Gagliano 2013). We discuss hypotheses for potential mechanisms below. At the range of frequencies most often described it is likely that any plant to plant signal transmission will occur at a very short distance given air movement and acoustic attenuation but in a natural context it is not possible to rule out transmission underground or at the interface of substrate and air via soil water and mass where signals might be expected to travel much further.