Cytokinins in Regulation of Plant Growth

  • Folke Skoog
Part of the Basic Life Sciences book series (BLSC, volume 2)


The extension of principles governing gene-controlled protein biosynthesis in prokaryotes as a basic regulatory mechanism common to all growth and developmental processes in eukaryotes, also, is now generally accepted. The question, then, is, what factors are involved in modulating the expression of genetic potentials in cells with an identical genome so as to permit development of functional, multicellular organisms? In the case of plants, it is clear that environmental factors, temperature, light, and inorganic nutrients influence differentiation and development in striking, specific ways, but, as in animals, it is recognized that endogenous growth factors, or hormones, mediate these effects and more generally serve to regulate the expression of genetic potentials. Furthermore, in plants as in animals, several categories of such substances exist, and changing balances in activity between them may modulate metabolism and bring about morphogenesis and functional changes characteristic of normal ontogeny. In this context, I wish to discuss the group of substances referred to as cytokinins.


Crown Gall Lactobacillus Acidophilus Cytokinin Activity Tobacco Callus Exogenous Cytokinin 
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Copyright information

© Plenum Press, New York 1973

Authors and Affiliations

  • Folke Skoog
    • 1
  1. 1.Institute of Plant Development, Birge HallUniversity of WisconsinMadisonUSA

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