STUDIES ON THE DISTRIBUTION AND PROPERTIES OF A NEW CLASS OF CELL DIVISION-PROMOTING SUBSTANCES FROM HIGHER PLANT SPECIES
- 1 February 1969
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 62 (2) , 349-356
- https://doi.org/10.1073/pnas.62.2.349
Abstract
One member of a new class of cell division-promoting substances, which are nicotinamide derivatives, has been found to be present in dividing cells of tobacco and cactus. These plants are taxonomically far removed from one another and from Vinca rosea L., the plant species from which the new substances were first isolated. Because of their apparent wide distribution among dicotyledonous plant species, the question is raised as to whether the nicotinamide derivatives rather than the purine cytokinins may not, in fact, be the naturally occurring cell division factors that are directly involved in promoting cytokinesis in higher plant species. Unequivocal evidence is presented to show that the nicotinamide derivatives do not owe their biological activity to contamination by 6-substituted purine cytokinins.Keywords
This publication has 3 references indexed in Scilit:
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