Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Al. Mickiewicza 21, 31-120 Kraków, Poland.
Laboratory of Mass Spectrometry, University of Agriculture in Kraków, Al. Mickiewicza 21, 31-120 Kraków, Poland.
Molecules. 2023 Jul 25;28(15):5638. doi: 10.3390/molecules28155638.
Iodine is a crucial microelement necessary for the proper functioning of human and animal organisms. Plant biofortification has been proposed as a method of improving the iodine status of the population. Recent studies in that field have revealed that iodine may also act as a beneficial element for higher plants. The aim of the work was to evaluate the efficiency of the uptake and accumulation of iodine in the plants of dandelion grown in a pot experiment. During cultivation, iodine was applied through fertigation in inorganic (KI, KIO) and organic forms (5-iodosalicylic acid, 5-ISA; 3,5-diiodosalicylic acid, 3,5-diISA) at two concentrations (10 and 50 µM). The contents of total iodine and iodosalicylic acids, as well the plant biomass and antioxidant capacity of dandelion leaves and roots, were analyzed. The uptake of inorganic and organic forms by dandelion plants was confirmed with no negative effect on plant growth. The highest efficiency of improving iodine content in dandelion leaves and roots was noted for 50 µM KI. The applicability of iodosalicylates, especially 5-ISA, for plant biofortification purposes was confirmed, particularly as the increase in the iodine content after the application of 5-ISA was higher as compared to that with commonly used KIO. The chemical analyses have revealed that iodosalicylates are endogenous compounds of dandelion plants.
碘是人类和动物机体正常运作所必需的关键微量元素。植物生物强化已被提议作为改善人群碘状况的一种方法。该领域的最新研究表明，碘也可能对高等植物起到有益元素的作用。本工作的目的是评估在盆栽实验中生长的蒲公英植物对碘的吸收和积累效率。在培养过程中，通过灌溉施肥以无机（KI、KIO）和有机形式（5-碘水杨酸、5-ISA；3,5-二碘水杨酸、3,5-diISA）在两种浓度（10 和 50 µM）下施加碘。分析蒲公英叶片和根部的总碘和碘水杨酸含量、植物生物量和抗氧化能力。蒲公英植物对无机和有机形式的吸收得到了确认，且对植物生长没有负面影响。在 KI 浓度为 50 µM 时，蒲公英叶片和根部的碘含量提高效率最高。碘水杨酸盐，特别是 5-ISA，可用于植物生物强化的适用性得到了证实，特别是与常用的 KIO 相比，施用 5-ISA 后碘含量的增加更高。化学分析表明，碘水杨酸盐是蒲公英植物的内源性化合物。
