VIEW ARTICLE

Responses of Crown Gall Tissue to Gravity Compensation. S. J. Kleinschuster, Assistant Professor, Botany and Plant Pathology Department, Colorado State University, Fort Collins 80523; B. L. Baker(2), and Ralph Baker(3). (2)(3)Research Technician, and Professor, respectively, Botany and Plant Pathology Department, Colorado State University, Fort Collins 80523. Phytopathology 65:931-935. Accepted for publication 22 February 1975. DOI: 10.1094/Phyto-65-931.

Increased weight of gravity-compensated crown gall tumors developing on carrot disks in comparison with those exposed to 1 g has been reported. An increase in radius of the meristematic rings of growth centers in these teratoma type galls was observed and provides an explanation for this phenomenon. The crown gall system is proving to be a sensitive and reliable indicator of the effects of simulated weightlessness on plant tissues.