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Science 5 April 1963:
Vol. 140. no. 3562, pp. 63 - 64
DOI: 10.1126/science.140.3562.63
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Articles

Root Hairs, Cuticle, and Pits

Flora Murray Scott 1, Barbara G. Bystrom 1, and E. Bowler 1

1 Department of Botany and College of Engineering, University of California, Los Angeles

The filamentous roots of mustard (Raphanus sativus), radish (Brassica nigra), squash (Cucurbita pepo), and wheat (Triticum aestivum) are covered throughout their length with living nucleated root hairs which may measure 1600 µ or more. The outer walls of piliferous and nonpiliferous cells consist of successive layers of mucilage, cutin, and the cellulose-pectic framework of the cell. Plasmodesmata and pits occur on all cell walls. Under the electron microscope individual pores and pits in the microfibrillar wall are evident throughout the length of the root hair. The "semipermeable membrane" of the root hair zone is thus structurally complex.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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The Holocene 11, 747-755
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Science. ISSN 0036-8075 (print), 1095-9203 (online)