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Journal of Cell Science, Vol 2, 557-562, Copyright © 1967 by Company of Biologists

Submitted on April 27, 1967

Cytoplasmic Microtubules in the Leaf Glands of Phaseolus Vulgaris

T. P. O'BRIEN 1

1 Biological Laboratories, Harvard University, Cambridge, Mass., U.S.A., Department of Botany, Queen's University, Belfast, Botany Department, Monash University, Clayton, Victoria, Australia.

Preliminary observations on the fine structure of the club-shaped glands on Phaseolus vulgaris leaves are reported. The perinuclear cytoplasm of the apical cells of these glands contains an abundance of microtubules. These occur either as aggregates of 2-8 or more tubules, or they may be organized around a central core of material to form a fibre-like structure. The cells also contain cortical microtubules and are rich in rough endoplasmic reticulum and dictyosomes. The nuclei of these cells also contain a proteinaceous fibre, visible in the light microscope. The possible significance of these structures is discussed in relation to cytoplasmic streaming, maintenance of cellular asymmetry, and reaction to virus infection.

Submitted on April 27, 1967






© The Company of Biologists Ltd 1967