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A Mode of Entry of Blue-Green Algae into the Apogeotropic Roots of Macrozamia communis
Charmian P. Nathanielsz and Ian A. Staff
American Journal of Botany
Vol. 62, No. 3 (Mar., 1975), pp. 232-235
Published by: Botanical Society of America, Inc.
Stable URL: http://www.jstor.org/stable/2441856
Page Count: 4
You can always find the topics here!Topics: Algae, Cyanobacteria, Plant roots, Lenticels, Symbiosis, Papillae, Seedlings, Plants, Extracellular space, Cell walls
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The entry of blue-green algae into an aerial root of Macrozamia communis via a break in the dermal layers and leading through a continuous cortical channel into the algal zone is reported. Penetration of the algae appears to be mainly in the form of filaments. Intercellular migration of the algae is found to occur after dissolution of host cell middle lamellae, but host cortical cells are also destroyed near some of the algae. Intracellular migration is also suggested to be a likely pathway for the algae as they proceed to the algal zone.
American Journal of Botany © 1975 Botanical Society of America, Inc.