Morikawa-Ichinose Tomomi, Kim Sun-Ju, Allahham Alaa, Kawaguchi Ryota, Maruyama-Nakashita Akiko
Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
Department of Bio-Environmental Chemistry, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134, Korea.
Plants (Basel). 2019 Apr 10;8(4):95. doi: 10.3390/plants8040095.
Plants take up sulfur (S), an essential element for all organisms, as sulfate, which is mainly attributed to the function of SULTR1;2 in . A disruption mutant of has been characterized with phenotypes similar to plants grown under sulfur deficiency (-S). Although the effects of -S on S metabolism were well investigated in seedlings, no studies have been performed on mature plants. To study further the effects of -S on S metabolism, we analyzed the accumulation and distribution of S-containing compounds in different parts of mature and of the wild-type (WT) plants grown under long-day conditions. While the levels of sulfate, cysteine, and glutathione were almost similar between and WT, levels of glucosinolates (GSLs) differed between them depending on the parts of the plant. GSLs levels in the leaves and stems were generally lower in than those in WT. However, seeds maintained similar levels of aliphatic GSLs to those in WT plants. GSL accumulation in reproductive tissues is likely to be prioritized even when sulfate supply is limited in for its role in S storage and plant defense.
植物以硫酸盐形式吸收硫（S），硫是所有生物体必需的元素，这主要归因于SULTR1;2在……中的功能。……的一个缺失突变体已被鉴定，其表型与在缺硫（-S）条件下生长的植物相似。尽管在幼苗中对缺硫对硫代谢的影响进行了充分研究，但尚未对成熟的……植物进行研究。为了进一步研究缺硫对硫代谢的影响，我们分析了在长日照条件下生长的成熟……植物和野生型（WT）植物不同部位含硫化合物的积累和分布。虽然……和WT之间的硫酸盐、半胱氨酸和谷胱甘肽水平几乎相似，但硫代葡萄糖苷（GSLs）的水平在它们之间因植物部位而异。……中叶片和茎中的GSLs水平通常低于WT中的水平。然而，……种子中脂肪族GSLs的水平与WT植物中的相似。即使在……中硫酸盐供应有限时，生殖组织中的GSL积累可能因其在硫储存和植物防御中的作用而被优先考虑。
