Department of Biology, University of Missouri, St. Louis, Missouri 63121.
Plant Physiol. 1975 Jun;55(6):1016-7. doi: 10.1104/pp.55.6.1016.
Gibberellic acid was tested for its effect on tumor induction by Agrobacterium tumefaciens in primary pinto bean (Phaseolus vulgaris) leaves in various stages of development. The hormone was found to promote tumor induction in partially aged leaves but did not effect tumor induction in very young leaves or in fully matured leaves. It is suggested that the natural loss of susceptibility to tumor induction in maturing pinto bean leaves is associated with a concomitant loss of endogenous gibberellins and/or a sensitivity to gibberellins.
赤霉素对不同发育阶段的菜豆（Phaseolus vulgaris）原生质体叶片中根瘤农杆菌诱导肿瘤的作用进行了测试。结果表明，该激素促进了部分衰老叶片的肿瘤诱导，但对非常幼嫩的叶片或完全成熟的叶片没有影响。这表明，在成熟的菜豆叶片中，对肿瘤诱导的自然敏感性丧失与内源赤霉素的同时丧失和/或对赤霉素的敏感性丧失有关。
