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Biol Bull 176: 36-40. (April 1989)
© 1989 Marine Biological Laboratory
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Transcellular Ionic Currents During Primary Cell Wall Morphogenesis in Micrasterias and Closterium

CYNTHIA L. TROXELL 1

1 Division of Cellular and Molecular Biology, National Jewish Center for Immunology and Respiratory Medicine, 1400 Jackson Street, Denver, Colorado 80206

The results of one- and two-dimensional vibrating probe studies of the desmids Closterium and Micrasterias have demonstrated that (i) transcellular ionic currents are detected only around cells that are undergoing primary cell wall morphogenesis, (ii) inward current is localized to regions of wall expansion, (iii) current densities maintain a steady level until growth slows with maturation of the primary cell wall pattern, and (iv) the currents are carried at least in part by Ca2+, K+, H+, and Cl- ions.






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Copyright © 1989 by the Marine Biological Laboratory.