Plant Physiol. Drug Metab Dispos
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Plant Physiology 76:148-150 (1984)
© 1984 American Society of Plant Biologists

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Articles

Development and Essential Oil Content of Secretory Glands of Sage (Salvia officinalis) 1

K. V. Venkatachalam, Robert Kjonaas and Rodney Croteau

Institute of Biological Chemistry and Biochemistry/Biophysics Program, Washington State University, Pullman, Washington 99164, Department of Botany, Washington State University, Pullman, Washington 99164

Scanning electron microscopy of sage (Salvia officinalis L.) leaves confirmed the presence of two basic types of glandular trichomes consisting of a capitate stalked form containing a multicellular stalk and surmounted by a unicellular secretory head, and a capitate sessile form containing a unicellular stalk and unicellular, or multicellular, secretory head. In the latter type, secretory activity and filling of the subcuticular cavity may begin at virtually any stage of the division cycle affording fully developed glands containing from one to twelve cells in the secretory head. Gas liquid chromatographic analysis of the oil content of the most numerous gland species (capitate stalked, capitate sessile with one and with eight secretory cells) indicated only minor quantitative differences in essential oil composition. Thus, each gland type is capable of producing the four major monoterpene families (p-menthanes, pinanes, bornanes and thujanes) characteristic of sage.

1 Supported in part by Department of Energy Contract DE-AM06-76RL02221, Agreement DE-AT06-82ER12027. Scientific Paper 6781, Project 0268, College of Agriculture Research Center, Washington State University, Pullman, WA 99164.




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Copyright © 1984 by the American Society of Plant Biologists