Growth and electric current loops in plants.

Growth and electric current loops in plants. Research Abstract Details 

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Growth and electric current loops in plants. Abstract Text:

K Toko,T Fujiyoshi,C Tanaka,S Iiyama,T Yoshida,K Hayashi,K Yamafuji,

A theory is presented for a relationship between ion accumulation and electric current loops in multicellular systems such as the roots and stems of higher plants. A network of electric circuits shows that the electric current transported across the cell membrane flows between an elongating region and a mature region, not only in roots but also in stems. In roots, ions constituting the extracellular electric current flow in the external aqueous medium, while in stems an electric current of comparable density flows within the epidermal cell wall. Based on this theoretical result, electric isolation between the elongating and mature regions was made in the case of both roots and stems. The speed of growth during the initial stage was greatly decreased due to a change in the distribution of protons around the surfaces of the plant by cutting off the electric current loop. Electrochemical calculation shows that ions are not always accumulated at the efflux site, since the ion distribution is strongly affected by the relation of the magnitudes between the electric field and electric current. The results calculated for the electric potential and pH distributions around the root agree with experimental data.

Growth and electric current loops in plants. Publishing Authors By Initials

K Toko,T Fujiyoshi,C Tanaka,S Iiyama,T Yoshida,K Hayashi,K Yamafuji,

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Growth and electric current loops in plants. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Biophysical chemistry

VOLUME: 33

Page Numbers: 161-76

Journal Abbreviation: Biophys. Chem.

ISSN: 0301-4622

DAY: 2

MONTH: May

YEAR: 1989

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LANGUAGE: eng

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AFFILIATION: Department of Electronics, Faculty of Engineering, Kyushu University 36, Fukuoka 812 Japan.

Country: Netherlands

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MEDLINETA: Biophys Chem

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