Department of Biological Sciences, University of Newcastle, 2308, New South Wales, Australia.
Planta. 1979 Dec;147(2):151-5. doi: 10.1007/BF00389516.
Kinetin, applied as a dispersion in aqueous lanolin to the stumps of decapitated stems of P. vulgaris plants with their roots removed, was found to promote the transport of (14)C- and (32)P-labelled assimilates to the site of hormone application. Measurement of photosynthetic rate of, and assimilate export rate from the source leaves, indicated that kinetin was not acting to promote assimilate transport by stimulating these processes. Moreover, it was found that the time between kinetin application and detection of an enhanced transport flux was independent of the distance over which kinetin would need to move to be present throughout the length of the transport pathway. These observations, together with the finding that lateral applications of kinetin to the stems resulted in an enhanced localized accumulation of assimilates, provided evidence that kinetin acted locally at its point of application to stimulate assimilate transfer.
将细胞分裂素配制成水羊毛脂分散液，涂抹于去根的普通豚草植株的断头茎干上，发现其能够促进（14）C 和（32）P 标记的同化物向激素施加部位的运输。对源叶的光合速率和同化物输出速率的测量表明，细胞分裂素并没有通过刺激这些过程来促进同化物的运输。此外，还发现细胞分裂素的施用时间与检测到增强的运输通量之间的时间与细胞分裂素需要移动的距离无关，而这一距离应足以使其存在于整个运输途径的长度上。这些观察结果，以及将细胞分裂素横向施加到茎干上会导致同化物在局部的积累增加的发现，提供了证据表明细胞分裂素在其施加部位发挥局部作用，刺激同化物的转移。
