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合成了两个新型羧甲基壳聚糖-铜(Ⅱ)-苯并咪唑衍生物型超氧化物歧化酶(SOD)模拟化合物:cmcts-Cu(Ⅱ)-tbz(1)和cmcts-Cu(Ⅱ)-hpb(2)(cmcts=羧甲基壳聚糖t,bz=2-(4′-噻唑基)苯并咪唑,hpb=2-(2′-吡啶基)苯并咪唑)。应用红外光谱,紫外-可见光谱,原子吸收光谱等对模拟物进行了表征,并研究了模拟物在中度土壤盐害的情况下对玉米幼苗抗盐害作用的影响。结果表明:在中度盐害情况下,经这些SOD模拟物浸种、叶面喷洒处理,玉米生物量得到较大提高,茎叶长和鲜重分别增加了7.30%～79.17%,和17.86%～119.05%,生物体内SOD活性提高了43.59%～80.22%,表明这些SOD模拟物能有效抑制玉米幼苗所受的盐害胁迫作用。
Two new compounds, cmcts-Cu (Ⅱ) -tbz (1) and cmcts-Cu (Ⅱ) II) -hpb (2) (cmcts = carboxymethyl chitosan t, bz = 2- (4’-thiazolyl) benzimidazole, hpb = 2- (2’-pyridyl) benzimidazole). The mimics were characterized by FTIR, UV-Vis, Atomic Absorption Spectroscopy. The effects of mimics on the salt-resistance of corn seedlings under moderate salt stress were also studied. The results showed that under the condition of moderate salt damage, the biomass of maize increased greatly after soaking and foliar sprayed by these SOD mimics, and the length and fresh weight of stem increased by 7.30% -79.17% and 17.86% ~ 119.05%, and SOD activity in vivo increased by 43.59% ~ 80.22%, indicating that these SOD mimics can effectively inhibit the salt stress of corn seedlings.