The protective effect of jasmonic acid (JA) was evaluated under the stress conditions (100 mM NaCl). The potato plants Solanum tuberosum L, mid-season variety Lugovskoy, were used in the experiments. The plant-regenerants were grafted and grown in test tubes on the modified Murashige and Skoog agar medium in the absence (control) or presence of JA at concentrations of 0.001, 0.1, and 10 μM under the optimal conditions or with addition of NaCl. After 28 days of cultivation, the growth (stem and root lengths, tier and leaf numbers, and plant mass) and physiological (proline and photosynthetic pigment contents and teh osmotic potential of cell exudate) characteristics of the plants were assessed. Jasmonic acid (0.1 and 10 μM) has been demonstrated to display a pronounced protective effect on potato plants under the salt stress condition. JA abolished partially the negative salt effect on the main photosynthetic pigments and maintained the cell osmotic status during salinization.

中文翻译：

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茉莉酸增强马铃薯植株对盐胁迫的抗性。

在压力条件下（100 mM NaCl）评估了茉莉酸（JA）的保护作用。在实验中使用了马铃薯植物Solanum tuberosum L，季节中期品种Lugovskoy。在不存在（对照）或存在JA，浓度为0.001、0.1和10μM的条件下或添加NaCl的情况下，将植物再生剂移植到改良的Murashige和Skoog琼脂培养基上的试管中并使其生长。培养28天后，评估了植物的生长（茎和根的长度，层和叶的数量以及植物的质量）和生理学的特性（脯氨酸和光合色素的含量以及细胞渗出液的渗透压）。茉莉酸（0.1和10μM）已被证明对盐胁迫条件下的马铃薯植株具有明显的保护作用。