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Accumulation of Anabasine in Reciprocal Grafts of Nicotiana Glauca and Tomato
Ray F. Dawson
American Journal of Botany
Vol. 31, No. 6 (Jun., 1944), pp. 351-355
Published by: Botanical Society of America, Inc.
Stable URL: http://www.jstor.org/stable/2437201
Page Count: 5
You can always find the topics here!Topics: Scions, Alkaloids, Plants, Plant roots, Steam, Stems, Picrates, Tissue grafting, Melting points, Hybridity
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The accumulation of anabasine and of nicotine in reciprocal grafts of Nicotiana glauca and tomato has been studied. The alkaloids were isolated and identified as the crystalline dipicrates. Anabasine accumulated in appreciable amount in tomato scions grown on N. glauca roots and in N. glauca scions grown on tomato roots. Nicotine accumulated in small amounts in tomato scions grown on N. glauca roots, although this alkaloid could not be detected in intact plants of N. glauca. From these and other data recorded in the literature it is concluded that nicotine production is limited to the roots of Nicotiana glauca as it is also localized in this organ in the case of Nicotiana tabacum. On the other hand, anabasine seems to be formed in both root and shoot of N. glauca independently. Finally, it is concluded that, potentially at least, the total anabasine content of the shoot of N. glauca may be derived in part from synthesis in situ and in part from the accumulation of alkaloid translocated to the shoots from the roots.
American Journal of Botany © 1944 Botanical Society of America, Inc.