Abstract
Using high pressure liquid chromatography, the cucumber cotyledon bioassay, and mass spectrometry a cytokinin isolated from Solanum tuberosum L. cv. Katahdin plant tissues has been identified as cis-zeatin riboside. Zeatin riboside (ZR) levels in plants grown under inducing conditions (28 C day and 13 C night with a 10-hour photoperiod) were significantly higher than those in plants grown under noninducing conditions (30 C day and 28 C night with an 18-hour photoperiod). The highest level of ZR was noted in below-ground tissue after 4 days exposure to inducing conditions, with tuber initiation observed after 8 days. A companion study conducted to determine the effect of ZR on in vitro tuberization of noninduced rhizomes revealed that after 1 month in culture, controls exhibited 0% tuberization, while ZR treatments of 0.3 and 3.0 milligrams per liter showed 39 and 75% tuberization, respectively.
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Selected References
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- Krasnuk M., Witham F. H., Tegley J. R. Cytokinins extracted from pinto bean fruit. Plant Physiol. 1971 Sep;48(3):320–324. doi: 10.1104/pp.48.3.320. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Miller C. O. Ribosyl-trans-Zeatin, A Major Cytokinin Produced by Crown Gall Tumor Tissue. Proc Natl Acad Sci U S A. 1974 Feb;71(2):334–338. doi: 10.1073/pnas.71.2.334. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shindy W. W., Smith O. E. Identification of plant hormones from cotton ovules. Plant Physiol. 1975 Mar;55(3):550–554. doi: 10.1104/pp.55.3.550. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shurpalekar K. S., Singh N., Sundaravalli O. E. Nutritive value of leaf protein from lucerne (Medicago sativa). Growth responses in rats at different protein levels & to supplementation with lysine &-or methionine. Indian J Exp Biol. 1969 Oct;7(4):279–280. [PubMed] [Google Scholar]