Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, South Korea.
Department of Food Science & Technology, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea.
J Sci Food Agric. 2021 Jul;101(9):3787-3794. doi: 10.1002/jsfa.11011. Epub 2021 Jan 18.
Increased soil salt concentration decreases productivity and changes the physiological and chemical properties of plants. Various omics technologies have been used to understand the salt response in plants but overall changes in the metabolite profiles of spinach (Spinacia oleracea L.) under salt stress have not been studied. In this article, therefore, the changes in mineral and metabolite profiles of spinach plants cultivated with different NaCl concentrations of 0-200 mmol L in the irrigation water were analyzed to investigate the effect of salt stress on nutritional quality.
Increasing NaCl concentration decreased plant growth due to mineral imbalance. The amounts of minerals (K , Ca , and Fe ) were reduced with increasing NaCl concentration, resulting in altered ratios of Na :K and Na :Ca . The change in the mineral ratios due to NaCl irrigation led to a decrease in the height and an increase in the weight of spinach. Moreover, the profiles of 32 metabolites, including flavonoids, amino acids, acidic compounds, sugars, and lipid-related compounds, were altered by NaCl irrigation; most of them showed decreased levels. In particular, at 200 mmol L NaCl, the levels of sucrose, glutamic acid, hexose sugars, and acidic compounds significantly decreased upon NaCl irrigation. Based on these metabolites, a salt-stress-related spinach metabolomic pathway was proposed.
Sodium chloride irrigation increased mineral imbalance, resulting in decreased plant growth, and the levels of most metabolites involved in energy production, sensory quality, and health benefits decreased with NaCl irrigation. The results suggest that NaCl irrigation negatively affects the nutritional quality of spinach. © 2020 Society of Chemical Industry.
土壤盐浓度增加会降低生产力，并改变植物的生理和化学特性。各种组学技术已被用于了解植物的盐响应，但尚未研究盐胁迫下菠菜（Spinacia oleracea L.）代谢物谱的总体变化。因此，本文分析了在灌溉水中不同 NaCl 浓度（0-200mmol/L）下栽培的菠菜植株的矿物质和代谢物谱的变化，以研究盐胁迫对营养品质的影响。
由于矿物质失衡，NaCl 浓度的增加会抑制植物生长。随着 NaCl 浓度的增加，矿物质（K、Ca 和 Fe）的含量减少，导致 Na：K 和 Na：Ca 的比例发生变化。由于 NaCl 灌溉导致的矿物质比例变化导致菠菜的高度降低，重量增加。此外，32 种代谢物的图谱，包括类黄酮、氨基酸、酸性化合物、糖和与脂质相关的化合物，由于 NaCl 灌溉而发生改变；其中大多数的含量都降低了。特别是在 200mmol/L NaCl 下，NaCl 灌溉后蔗糖、谷氨酸、己糖和酸性化合物的水平显著降低。基于这些代谢物，提出了一个与盐胁迫相关的菠菜代谢组学途径。
NaCl 灌溉增加了矿物质失衡，导致植物生长下降，而与能量产生、感官质量和健康益处相关的大多数代谢物的水平随着 NaCl 灌溉而降低。结果表明，NaCl 灌溉对菠菜的营养品质有负面影响。© 2020 英国化学学会。
