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Isozyme Patterns in Gravity-Compensated Crown Gall Tissue. Penelope Hanchey, Associate Professor, Department of Botany and Plant Pathology, Colorado State University, Fort Collins 80523; Bonnie Lou Baker(2), and Ralph Baker(3). (2)(3)Research Technician, and Professor, respectively, Department of Botany and Plant Pathology, Colorado State University, Fort Collins 80523. Phytopathology 65:1136-1138. Accepted for publication 30 April 1975. DOI: 10.1094/Phyto-65-1136.

Isozyme patterns of gravity-compensated carrot crown galls were compared with patterns from galls grown in stationary or vertically rotated positions. Both horizontally rotated (gravity-compensated) and vertically rotated galls exhibited identical esterase zymograms differing from either horizontal or vertical stationary controls. Peroxidase patterns of each treatment were different. Differences in either enzyme were not associated with numbers of bacteria. Results demonstrate that the gravitational field influences isozyme activity in carrot crown gall.