This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (26) Citing Articles via Google Scholar Google Scholar Articles by Young, N. D. Articles by Galston, A. W. Search for Related Content PubMed PubMed Citation Articles by Young, N. D. Articles by Galston, A. W. Agricola Articles by Young, N. D. Articles by Galston, A. W.

Articles

Are Polyamines Transported in Etiolated Peas? ¹

Department of Biology, Yale University, New Haven, Connecticut 06511

To investigate the possible transport of polyamines and their precursor amino acids, ¹⁴C-labeled putrescine, spermidine, arginine, or lysine were injected into cotyledons of 4-day etiolated pea (Pisum sativum L. cv Alaska) seedlings. After 4 hours the shoot, root, and cotyledons were homogenized and the extracted, dansylated polyamines separated by thin-layer chromatography. Little radioactivity was transported from the cotyledons when [¹⁴C]putrescine or [¹⁴C]spermidine were injected and of the radioactivity in the axis, none could be recovered as polyamines. Injection of [¹⁴C]arginine or [¹⁴C]lysine, on the other hand, led to a significant transport of radioactivity into the axis, of which a large fraction was present in the form of the diamines, putrescine or cadaverine, respectively. These results indicate that polyamines in the growing regions of etiolated pea seedlings probably arise from transport and conversion of amino acid precursors.

This article has been cited by other articles:

				R. F. Boaz Early Withdrawal from the Labor Force: A Response Only to Pension Pull or also to Labor Market Push? Research on Aging, December 1, 1987; 9(4): 530 - 547. [Abstract]