Falouti M, Ellouzi H, Bounaouara F, Farhat N, Aggag A M, Debez A, Rabhi M, Abdelly C, Slama I, Zorrig W
Laboratory of Extremophile Plants, Centre of Biotechnology of Borj-Cedria, BP 901, Hammam-Lif 2050, Tunisia.
Department of Plant Production and Protection, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia.
Photosynthetica. 2022 Sep 7;60(4):508-520. doi: 10.32615/ps.2022.031. eCollection 2022.
This study was conducted to assess whether silicon (Si) supply can alleviate the harmful effects of severe salinity in barley (). Plants were grown on non-saline (0 mM NaCl) or saline (200 mM NaCl) nutrient media supplemented or not with 0.5 mM Si. Salinity impacted plant morphology and induced sodium and chloride accumulation within plant tissues. It significantly affected almost all measured parameters. Interestingly, Si supply alleviated salt stress effects on plant morphology, growth (up to +59%), water status (up to +74%), membrane integrity (up to +35%), pigment contents (up to +121%), and the activity of the two photosystems (PSI and PSII) by improving their yields, and by reducing their energy dissipation. Si beneficial effect was more pronounced on PSI as compared to PSII. As a whole, data inferred from the present study further confirmed that silicon application is an effective approach to cope with salinity.
本研究旨在评估硅（Si）供应是否能减轻大麦中重度盐度的有害影响。将植物种植在添加或不添加0.5 mM Si的非盐（0 mM NaCl）或盐（200 mM NaCl）营养培养基上。盐度影响植物形态，并导致植物组织内钠和氯的积累。它几乎显著影响了所有测量参数。有趣的是，硅供应通过提高产量和减少能量耗散，减轻了盐胁迫对植物形态、生长（高达+59%）、水分状况（高达+74%）、膜完整性（高达+35%）、色素含量（高达+121%）以及两个光系统（PSI和PSII）活性的影响。与PSII相比，硅对PSI的有益作用更为明显。总体而言，本研究推断的数据进一步证实，施用硅是应对盐度的有效方法。
