Li Shumin, Schonhof Ilona, Krumbein Angelika, Li Long, Stützel Hartmut, Schreiner Monika
Resource and Environmental College, Northeast Agricultural University, Harbin, China.
J Agric Food Chem. 2007 Oct 17;55(21):8452-7. doi: 10.1021/jf070816k. Epub 2007 Sep 14.
Three greenhouse pot experiments were conducted with four different nitrogen (N) treatments (80, 160, 240, and 320 kg ha (-1)) in combination with three sulfur (S) treatments (10, 20, and 60 kg ha (-1)) to study the effects of combined N and S supply on glucosinolate concentration and composition in turnip roots. Total glucosinolate concentration varied widely from 9.7 (N 320S 10) to 91.6 (N 160S 60) mg (100 g) (-1) root fresh weight (FW) and individual glucosinolate concentrations were increased with increasing S supply regardless of the N treatment, whereas enhanced N supply (160 - 320 N ha (-1)) at the high S level (60 kg ha (-1)) did not affect total glucosinolate concentration. In contrast, assumingly attributed to the individual glucosinolate biosynthesis concentration of N-containing tryptophan-derived indole glucosinolate was highest with increased N supply, whereas S-containing methionine-derived aromatic and aliphatic glucosinolates decreased with increasing N supply combined at low S level (10-20 kg ha (-1)).
进行了三项温室盆栽试验，设置了四种不同的氮（N）处理（80、160、240和320 kg ha(-1)）与三种硫（S）处理（10、20和60 kg ha(-1)）的组合，以研究氮和硫联合供应对芜菁根中硫代葡萄糖苷浓度和组成的影响。硫代葡萄糖苷总浓度变化很大，从9.7（N 320S 10）到91. (N 160S 60) mg (100 g)(-1)根鲜重（FW），无论氮处理如何，随着硫供应的增加，单个硫代葡萄糖苷浓度都会增加，而在高硫水平（60 kg ha(-1)）下增加氮供应（160 - 320 N ha(-1)）不会影响硫代葡萄糖苷总浓度。相比之下，推测由于含氮色氨酸衍生的吲哚硫代葡萄糖苷的单个硫代葡萄糖苷生物合成浓度随着氮供应的增加而最高，而在低硫水平（10 - 20 kg ha(-1)）下，含硫蛋氨酸衍生的芳香族和脂肪族硫代葡萄糖苷随着氮供应的增加而减少。
