The study aimed to determine the phytohormone profile of sweet briar rose (Rosa rubiginosa L.) seedlings and privileged synthesis pathways of individual hormones including gibberellins, cytokinins and auxins in response to long-term soil drought. We detected 32 plant hormones, including eight gibberellins, nine auxins and fifteen cytokinins. Abscisic acid (ABA) was also detected as a sensitive indicator of water stress. Thirty days of soil drought induced significant increase of ABA content and species-specific quantitative changes of other phytohormones. We established preferred synthesis pathways for three gibberellins, six auxins and eight cytokinins. Both an increase and decrease in gibberellin and cytokinin levels may modulate sweet briar's response to soil water shortage. In the case of auxins, induction of effective adaptation mechanisms to extremely dry environments is mostly triggered by their rising levels. Under drought stress, sweet briar seedlings increased their gibberellin pool at the expense of reducing the pool of cytokinins and auxins. This may indicate a specific role of gibberellins in adaptation the mechanisms to long-term soil water deficit developed by sweet briar.

该研究旨在确定甜蔷薇蔷薇（Rosa rubiginosa）的植物激素特征L.）幼苗和个别激素的特权合成途径，包括赤霉素，细胞分裂素和生长素对长期土壤干旱的响应。我们检测到32种植物激素，包括8种赤霉素，9种生长素和15种细胞分裂素。脱落酸（ABA）也被检测为水分胁迫的敏感指标。30天的土壤干旱导致ABA含量显着增加，而其他植物激素的物种特异性定量变化也是如此。我们为三种赤霉素，六种生长素和八种细胞分裂素建立了优选的合成途径。赤霉素和细胞分裂素水平的升高和降低都可能调节甜蔷薇对土壤缺水的反应。就生长素而言，诱导其对极端干燥环境有效的适应机制的主要原因是其水平的升高。在干旱胁迫下，甜甜的野蔷薇幼苗增加了赤霉素的库，但以减少细胞分裂素和生长素的库为代价。这可能表明赤霉素在适应甜野蔷薇引起的长期土壤水分缺乏的机制中的特定作用。