Department of Quality Research, Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V. , Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany.
J Agric Food Chem. 2011 Feb 23;59(4):1400-5. doi: 10.1021/jf103585s. Epub 2011 Jan 25.
Elicitation studies with salicylic acid (SA) and methyl jasmonate (MJ) inducing a targeted rhizosecretion of high levels of anticarcinogenic glucosinolates in Brassica rapa ssp. rapa plants were conducted. Elicitor applications not only led to an accumulation of individual indole glucosinolates and the aromatic 2-phenylethyl glucosinolate in the turnip organs but also in turnip root exudates. This indicates an extended systemic response, which comprises the phyllosphere with all aboveground plant organs and the rhizosphere including the belowground root system and also root exudates. Both elicitor applications induced a doubling in 2-phenylethyl glucosinolate in root exudates, whereas application of MJ enhanced rhizosecreted indole glucosinolates up to 4-fold. In addition, the time course study revealed that maximal elicitation was observed on the 10th day of SA and MJ treatment. This study may provide an essential contribution using these glucosinolates as bioactive additives in functional foods and nutraceuticals.
水杨酸（SA）和茉莉酸甲酯（MJ）诱导萝卜亚种植物靶向根系分泌高水平抗癌硫代葡萄糖苷的激发研究已经进行。激发剂的应用不仅导致了吲哚硫代葡萄糖苷和芳香 2-苯乙基硫代葡萄糖苷在芜菁器官中的积累，也导致了芜菁根渗出物中的积累。这表明存在一种扩展的系统反应，包括叶片和所有地上植物器官的叶际，以及包括地下根系和根渗出物的根际。两种激发剂的应用都使根渗出物中的 2-苯乙基硫代葡萄糖苷增加了一倍，而 MJ 的应用使根系分泌的吲哚硫代葡萄糖苷增加了 4 倍。此外，时间进程研究表明，在 SA 和 MJ 处理的第 10 天观察到最大的激发作用。这项研究可能为将这些硫代葡萄糖苷作为功能性食品和营养保健品中的生物活性添加剂提供重要贡献。
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