Diethyl aminoethyl hexanoate (DA-6) can lessen the effects of cadmium (Cd) toxicity on some plants. A pot experiment was conducted to examine the impact of different DA-6 concentrations (0, 10, 20, 30, and 40 mg/L) on growth and Cd accumulation of tomato seedlings. A DA-6 concentration of 10 mg/L increased the biomass of roots, stems, leaves, and shoots, while the other concentrations either had no significant effects or inhibited the growth of tomato seedlings. Concentrations 10 and 20 mg/L of DA-6 increased the chlorophyll b and total chlorophyll contents, and the activities of superoxide dismutase and peroxidase. All the four tested concentrations of DA-6 reduced catalase activity and increased the soluble protein content. Importantly, all tested DA-6 concentrations decreased the Cd content of tomato seedling roots, and increased in the Cd contents of stems, leaves, and shoots. While 10 mg/L DA-6 did not significantly affect the translocation factor of tomato seedlings, the other tested DA-6 concentrations enhanced the translocation factor. Therefore, 10 mg/L DA-6 could significantly promote the growth of tomato, but all the tested concentrations of DA-6 could also promote the uptake of Cd in tomato shoots, which could impede the safe production of tomatoes in Cd-contaminated soils.

中文翻译：

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氨基乙基己酸二乙酯（DA-6）对番茄幼苗生长及镉积累的影响

氨基乙基己酸二乙酯 (DA-6) 可以减轻镉 (Cd) 毒性对某些植物的影响。进行盆栽试验以检查不同 DA-6 浓度（0、10、20、30 和 40 mg/L）对番茄幼苗生长和 Cd 积累的影响。10 mg/L 的 DA-6 浓度增加了根、茎、叶和芽的生物量，而其他浓度要么没有显着影响，要么抑制番茄幼苗的生长。浓度为 10 和 20 毫克/升的 DA-6 会增加叶绿素b和总叶绿素含量，以及超氧化物歧化酶和过氧化物酶的活性。所有四种测试浓度的 DA-6 都降低了过氧化氢酶活性并增加了可溶性蛋白质含量。重要的是，所有测试的 DA-6 浓度都降低了番茄幼苗根的 Cd 含量，并增加了茎、叶和芽的 Cd 含量。虽然 10 mg/L DA-6 没有显着影响番茄幼苗的易位因子，但其他测试的 DA-6 浓度增强了易位因子。因此，10 mg/L DA-6可以显着促进番茄的生长，但所有测试浓度的DA-6也可以促进番茄芽对Cd的吸收，这可能会阻碍番茄在Cd污染土壤中的安全生产.