Department of Horticulture, Purdue University, Lafayette, Indiana.
Plant Physiol. 1966 May;41(5):826-30. doi: 10.1104/pp.41.5.826.
The possibility that leaf abscission might involve a mobilization phenomenon leading to a localized cellular senescence was examined by following dry weight changes, chlorophyll content, and protein levels in proximal and distal tissue of excised pieces of bean petioles from Phaseolus vulgaris L. var. Red Kidney. Nucleic acid levels were determined as were phosphate pool sizes in conjunction with (32)P labeling patterns. Each of these parameters indicated a mobilization into the tissues proximal to the zone of cellular separation at the expense of the distal tissues, suggesting that mobilization and the consequent development of cellular senescence provide a component in the process of bean leaf abscission.
通过观察离体菜豆叶片近、远两端组织的干重变化、叶绿素含量和蛋白质水平，研究了叶片脱落是否涉及导致局部细胞衰老的动员现象。还测定了核酸水平以及与（32）P 标记模式相关的磷酸盐池大小。所有这些参数都表明，在细胞分离区近侧的组织中有物质动员，而远侧的组织则减少，这表明动员和随之发生的细胞衰老为菜豆叶片脱落过程提供了一个组成部分。
