One of the most fascinating abnormalities exhibited by protoplasm is the development of autonomous or self-governing tumors which do not limit themselves in size (Fig. 9-1). They contrast with the neat, regular, highly architectured galls caused by mites and wasps. These galls require the continued presence of the causal agent and are self-limiting in size and shape (Figs. 9-2, 9-3).


Hairy Root Crown Gall Meristematic Activity Gall Tissue Chewing Insect 
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Suggested Reading

  1. Braun, A. C., “Studies on Tumor Inception in the Crown Gall Disease.” American Journal of Botany, Vol. 30 (November, 1943), pp. 674–677.CrossRefGoogle Scholar
  2. Braun, A. C., “Recovery of Crown-Gall Tumor Cells.” Cancer Research, Vol. 11 (November, 1951), pp. 839–844.PubMedGoogle Scholar
  3. Braun, A. C., “Studies on the Origin of the Crown-Gall Tumor Cell.” Brookhaven Symposia in Biology, Vol. 6 (April, 1954), pp. 115–127.Google Scholar
  4. Braun, A. C., “A Physiological Study on the Nature of Autonomous Growth in Neoplastic Plant Cells.” Vol. 11 Symposia of the Society for Experimental Biology. 1957.Google Scholar
  5. Lipetz, J., “Crown Gall Tumorigenesis: Effects of Temperature on Wound Healing and Conditioning.” Science, Vol. 149 (August, 1965), pp. 865–867.CrossRefGoogle Scholar
  6. Braun, A. C., “Growth is Affected,” in J. G. Horsfall and A. E. Dimond, eds., Plant Pathology, Vol. I (New York, 1959), pp. 189-240.Google Scholar

Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • Ervin H. Barnes
    • 1
  1. 1.Michigan State UniversityUSA

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