Department of Biological Sciences, University of Newcastle, 2308, N.S.W., Australia.
Planta. 1979 Jan;145(3):233-8. doi: 10.1007/BF00454446.
Gibberellic acid (GA3), applied as a dispersion in aqueous lanolin to the stumps of decapitated stems of P. vulgaris plants, was found to promote the transfer of (14)C-and (32)P-labelled assimilates to the site of hormone application. Measurements of the component transfer processes, operating between source and sink (site of hormone application), showed that GA3 was not acting to promote assimilate transfer by increasing the photosynthetic rate of, or the assimilate export rate from the source, nor by altering the mobilizing ability of the competing root sink. Here, it also was found that the time between GA3 application and detection of an enhanced transport flux was independent of the length of the transport pathway. Overall, the evidence obtained indicated that GA3 was not acting on any transfer process remote from its point of hormone application but was acting locally at this latter point.
赤霉素（GA3）以水羊毛脂分散体的形式施用于已去顶的普通豚草植物茎段的茎段残端，发现它促进了（14）C 和（32）P 标记的同化物向激素施加部位的转移。在源（激素施加部位）和汇（竞争根汇）之间运转的成分转移过程的测量表明，GA3 不是通过增加源的光合速率或同化物输出率，也不是通过改变竞争根汇的动员能力来促进同化物转移。在这里，还发现 GA3 应用与检测增强的运输通量之间的时间与运输途径的长度无关。总的来说，获得的证据表明，GA3 不是作用于远离其激素施加部位的任何转移过程，而是作用于后者的局部部位。
