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Plant Physiology 74:912-916 (1984)
© 1984 American Society of Plant Biologists

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Articles

Electric Currents around Growing Trichoderma Hyphae, before and after Photoinduction of Conidiation

Benjamin A. Horwitz1, Manfred H. Weisenseel, Alfred Dorn and Jonathan Gressel2

Department of Plant Genetics, The Weizmann Institute of Science, 76100 Rehovot, Israel, Botanisches 1, Universität Karlsruhe (TH), D-7500 Karlsruhe, W. Germany

Electric currents were measured around Trichoderma harzianum (Rifai) hyphae using an extracellular vibrating electrode. A steady current enters growing hyphal tips and along the side of the apical millimeter. In addition, outward currents were detected at about one-ninth of the locations tested, 60 to 150 minutes after illumination but not in dark controls. This sporadic, localized outward current pattern might be an early biophysical response to blue light.

1 Supported by a grant from the Minerva Foundation.

2 Gilbert de Botton Professor of Plant Science.






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Copyright © 1984 by the American Society of Plant Biologists