Lehrstuhl für Pflanzenphysiologie, Ruhr-Universität Bochum, D-4630, Bochum, Federal Republic of Germany.
Planta. 1981 Jun;152(2):168-70. doi: 10.1007/BF00391189.
A sensitive and specific radioimmunoassay was used to determine quantitatively four of the most important phytohormones in the phloem exudate from 14 different tree species of 8 genera. For cytokinins and indole-3-acetic acid (IAA) we found higher concentrations than those reported previously for other species. The gibberellin values were of the same order of magnitude as in earlier analyses (with different methods) of tree phloem exudates, but lower than the ones reported for Ricinus. Free abscisic acid (ABA) was found in tree phloem exudates in similar concentrations as before in Yucca or palm phloem exudate, but at considerably lower ones than reported for Ricinus and in Lupinus phloem exudate.
采用灵敏、特异的放射免疫分析法测定了来自 8 属 14 种不同树种韧皮部渗出液中的 4 种最重要的植物激素。对于细胞分裂素和吲哚-3-乙酸（IAA），我们发现的浓度比以前报道的其他物种的浓度要高。赤霉素的值与以前用不同方法分析的树木韧皮部渗出液中的值相同，但低于蓖麻的报道值。在树木韧皮部渗出液中发现了游离脱落酸（ABA），其浓度与以前在丝兰或棕榈韧皮部渗出液中的浓度相似，但比蓖麻和羽扇豆韧皮部渗出液中的报道值低得多。
