Tolrà Roser, González-Cobo Carlos, Corrales Isabel, Padilla Rosa, Llugany Mercè
Plant Physiology Group (BABVE), Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
Antioxidants (Basel). 2025 Mar 18;14(3):353. doi: 10.3390/antiox14030353.
Global food demand and insecurity are intensifying due to rapid population growth, the loss of arable land, climate change, and pollution. Among the critical challenges in global agriculture is soil salinization, in which high NaCl concentrations can severely inhibit germination and crop establishment. , a halophyte from the genus, can tolerate salinity levels up to 400 mM NaCl, far exceeding the tolerance of most crops, making it a promising model for studying salt stress resistance. This study investigates the effects of seed halopriming as an effective strategy to enhance salt tolerance in . The research evaluates germination rates, seedling establishment, mineral status, oxidative stress markers, and genetic responses under increasing NaCl concentrations. Halopriming with NaCl pre-activates the plant's antioxidant defence mechanisms and upregulates stress-responsive genes, improving the plant's resilience to saline conditions. While salinity caused significant physiological challenges, primed seeds demonstrated superior performance compared to non-primed controls, with enhanced germination and an improved tolerance to oxidative stress. These findings underscore the potential of halopriming as a cost-effective and sustainable technique to improve crop performance in saline environments. This study highlights the importance of advancing seed priming technologies for developing resilient crops to address global food security challenges in the face of climate change.
由于人口快速增长、耕地流失、气候变化和污染，全球粮食需求和粮食不安全状况正在加剧。全球农业面临的关键挑战之一是土壤盐渍化，其中高浓度的氯化钠会严重抑制种子萌发和作物定植。盐角草属的一种盐生植物能耐受高达400 mM氯化钠的盐度水平，远远超过大多数作物的耐受能力，使其成为研究抗盐胁迫的一个有前景的模式植物。本研究调查了种子盐引发作为提高盐角草耐盐性的有效策略的效果。该研究评估了在不断增加的氯化钠浓度下的发芽率、幼苗定植、矿物质状况、氧化应激标志物和基因反应。用氯化钠进行盐引发可预先激活植物的抗氧化防御机制并上调胁迫响应基因，提高植物对盐胁迫条件的恢复力。虽然盐胁迫带来了重大的生理挑战，但引发处理的种子与未引发处理的对照相比表现出更优的性能，发芽率提高且对氧化应激的耐受性增强。这些发现强调了盐引发作为一种经济高效且可持续的技术在改善盐渍环境中作物性能方面的潜力。本研究凸显了推进种子引发技术对于培育适应气候变化的抗逆作物以应对全球粮食安全挑战的重要性。
