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Biophysical Journal 70: 1138-1143 (1996)
© 1996 the Biophysical Society

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Visualization of plant cell walls by atomic force microscopy.

A R Kirby, A P Gunning, K W Waldron, V J Morris and A Ng

Institute of Food Research, Norwich Laboratory, Norwich Research Park, Colney, England. andrew.kirby@bbsrc.ac.uk

ABSTRACT

Atomic force microscopy has been used to visualize the ultrastructure of hydrated plant cell wall material from prepared apple (Malus pumila MILL; Cox orange pippin), water chestnut (Eleocharis dulcis L.), potato (Solanum tuberosum L.; Bintje), and carrot (Daucus carota L.; Amsterdamse bak) parenchyma. Samples of cell wall material in aqueous suspension were deposited onto freshly cleaved mica. Excess water was blotted away and the moist samples were imaged in air at ambient temperature and humidity. The three-dimensional images obtained highlighted the layered structure of the plant cell walls and revealed features interpreted as individual cellulose microfibrils and plasmodesmata.






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Copyright © 1996 by the Biophysical Society.