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Leaf Movement Alterations on Bean Plants with Common Bacterial Blight. F. M. Guillaume, Department of Botany, University of Minnesota, St. Paul 55108; B. W. Kennedy(2), L. Carlson(3), and W. L. Koukkari(4). (2)Department of Plant Pathology, University of Minnesota, St. Paul 55108; (3)(4)Department of Botany, University of Minnesota, St. Paul 55108. Phytopathology 76:270-272. Accepted for publication 23 September 1985. Copyright 1986 The American Phytopathological Society. DOI: 10.1094/Phyto-76-270.

Rhythmic movements of unifoliolate leaves of Phaseolus vulgaris ‘Bush Blue Lake' that develop wilt following inoculation with Xanthomonas campestris pv. phaseoli continue for several days following inoculation. Three types of patterns have been identified in movements of diseased leaves that distinguish them from the normal rhythmic patterns of healthy leaves. These special patterns occur during the light span, are absent in darkness, and continue for various durations of time prior to death of the plant.

Additional keywords: chronobiology, rhythm.