Benjamin Jenifer Joseph, Miras-Moreno Begoña, Araniti Fabrizio, Salehi Hajar, Bernardo Letizia, Parida Ajay, Lucini Luigi
Department of Plant molecular Biology, MS Swaminathan Research Foundation, III Cross Street, Taramani Institutional Area, Taramani, Chennai 600113, India.
Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics (CREA-GB), via San Protaso 302, 29017 Fiorenzuola d'Arda, PC, Italy.
Plants (Basel). 2020 Feb 10;9(2):227. doi: 10.3390/plants9020227.
Plant resistance to salinity stress is one of the main challenges of agriculture. The comprehension of the molecular and cellular mechanisms involved in plant tolerance to salinity can help to contrast crop losses due to high salt conditions in soil. In this study, and , two plants with capacity to adapt to high salinity levels, were investigated at proteome level to highlight the key processes involved in their tolerance to NaCl. With this purpose, plants were treated with 200 mM NaCl as optimal concentration and 500 mM NaCl as a moderate stressing concentration for 14 days. Indeed, 200 mM NaCl did not result in an evident stress condition for both species, although photosynthesis was affected (with a general up accumulation of photosynthesis-related proteins in under salinity). Our findings indicate a coordinated response to salinity in both the halophytes considered, under NaCl conditions. In addition to photosynthesis, heat shock proteins and peroxidase, expansins, signaling processes, and modulation of transcription/translation were affected by salinity. Interestingly, our results suggested distinct mechanisms of tolerance to salinity between the two species considered, with likely having a more efficient mechanism of response to NaCl.
植物对盐胁迫的抗性是农业面临的主要挑战之一。了解植物耐盐性所涉及的分子和细胞机制有助于减少因土壤高盐条件导致的作物损失。在本研究中，对两种具有适应高盐水平能力的植物和进行了蛋白质组水平的研究，以突出它们对氯化钠耐受性所涉及的关键过程。为此，将植物分别用200 mM NaCl作为最佳浓度和500 mM NaCl作为中度胁迫浓度处理14天。实际上，200 mM NaCl对这两个物种均未造成明显的胁迫条件，尽管光合作用受到了影响（在盐度条件下，中与光合作用相关的蛋白质普遍积累增加）。我们的研究结果表明，在所研究的两种盐生植物中，在NaCl条件下对盐度存在协同反应。除光合作用外，热休克蛋白、过氧化物酶、扩张蛋白、信号传导过程以及转录/翻译的调节均受盐度影响。有趣的是，我们的结果表明所研究的两个物种之间存在不同的耐盐机制，可能对NaCl具有更有效的反应机制。
