Radhakrishnan Ramalingam
School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749 Republic of Korea.
Physiol Mol Biol Plants. 2018 Mar;24(2):343-347. doi: 10.1007/s12298-018-0505-8. Epub 2018 Jan 17.
The increase in crop productivity is an urgent need of the time to reduce scarcity of food in underdeveloped countries. Several biological, chemical and physical methods have been applied to promote crop yield. Application of magnetic field (MF) is an emerging physical method used to increase plant growth and yield. The reports on MF pretreatment-induced nutritional changes in harvested seeds are scarce. We previously identified the optimal frequency of MF to improve plant growth and yield as 1500 nT at 10.0 Hz. This study was aimed to investigate the effect of MF treatment on storage proteins and fatty acids in harvested soybean seeds. The results showed that MF triggered globulin production and suppressed prolamin production. However, lipid content in seeds increased, because MF exposure caused an elevation of several fatty acids including caprylic acid, palmitic acid, heptadecanoic acid, linoleic acid, lignoceric acid and eicosapentaenoic acid. This is the first report to reveal the seed pretreated MF on nutritional values of harvested seeds. This study suggests that MF treatment improves seed quality by regulating the metabolism of storage proteins and fatty acids.
提高作物生产力是当下减少欠发达国家粮食短缺的迫切需求。人们已经应用了多种生物、化学和物理方法来提高作物产量。施加磁场（MF）是一种新兴的用于促进植物生长和提高产量的物理方法。关于MF预处理对收获种子营养变化影响的报道很少。我们之前确定了提高植物生长和产量的MF最佳频率为10.0赫兹时的1500纳特斯拉。本研究旨在探讨MF处理对收获的大豆种子中贮藏蛋白和脂肪酸的影响。结果表明，MF引发了球蛋白的产生并抑制了醇溶蛋白的产生。然而，种子中的脂质含量增加了，因为暴露于MF导致包括辛酸、棕榈酸、十七烷酸、亚油酸、木蜡酸和二十碳五烯酸在内的几种脂肪酸含量升高。这是第一份揭示经MF预处理种子对收获种子营养价值影响的报告。本研究表明，MF处理通过调节贮藏蛋白和脂肪酸的代谢来提高种子质量。
