National Research Institute of Rural Engineering, Water and Forests (INRGREF), BP 10, Aryanah 2080, Tunisia.
Laboratory of Plant Extremophiles, Biotechnology Center at the Technopark of Borj-Cedria Tunisia, BP 901, Hammam Lif 2050, Tunisia.
Molecules. 2018 Jun 23;23(7):1518. doi: 10.3390/molecules23071518.
The present study investigated the effect of salt stress on the development of adaptive responses and growth parameters of different coloured wheat genotypes. The different coloured wheat genotypes have revealed variation in the anthocyanin content, which may affect the development of adaptive responses under increasing salinity stress. In the early stage of treatment with salt at a lower NaCl concentration (100 mM), anthocyanins and proline accumulate, which shows rapid development of the stress reaction. A dose-dependent increase in flavonol content was observed for wheat genotypes with more intense purple-blue pigmentation after treatment with 150 mM and 200 mM NaCl. The content of Na⁺ and K⁺ obtained at different levels of salinity based on dry weight (DW) was more than 3 times greater than the control, with a significant increase of both ions under salt stress. Overall, our results demonstrated that coloured wheat genotypes with high anthocyanin content are able to maintain significantly higher dry matter production after salt stress treatment.
本研究调查了盐胁迫对不同颜色小麦基因型适应反应和生长参数发展的影响。不同颜色的小麦基因型在花色苷含量上存在差异，这可能影响在不断增加的盐胁迫下适应反应的发展。在较低 NaCl 浓度（100mM）的盐处理早期，花色苷和脯氨酸积累，表明应激反应迅速发展。用 150mM 和 200mM NaCl 处理后，紫色-蓝色色素染色较强的小麦基因型的类黄酮含量呈剂量依赖性增加。基于干重 (DW)，不同盐度水平下获得的 Na⁺ 和 K⁺含量比对照高出 3 倍以上，盐胁迫下两种离子都显著增加。总的来说，我们的研究结果表明，花色苷含量高的有色小麦基因型在盐胁迫处理后能够保持更高的干物质产量。
