草业学报2011，Vol.20Issue(5)：102-110,9.
金霉素和其代谢物胁迫对小白菜幼苗生长和抗氧化酶活性及累积效应的影响
Effects of chlortetracycline and 4-epi-chlortetracycline stress on seedling growth, antioxidant enzyme activities and accumulation in pakchoi
摘要
Abstract
The effects of different concentrations of chlortetracycline (CTC) and 4-epi-chlortetracycline (ECTC) (1,10, 30 mg/L) on seed germination, growth, antioxidant enzyme systems, CTC and ECTC accumulation in pakchoi (Brassica campestris ssp. Chinensis) seedlings were investigated using a water culture method. The re sults indicated that root elongation could be recommended as a sensitivity indicator to assess eco-toxicity of CTC and ECTC compared with other targets. The activities of SOD, POD and CAT of pakchoi were enhanced with increasing CTC concentration and the activities of POD and CAT were always higher than that of the control group. Under the same conditions, the SOD, POD and CAT activities were enhanced at a low concentration of ECTC but the latter two were inhibited at high ECTC concentration. CTC and ECTC can accumulate in pak choi. When the concentration of CTC and ECTC was increased, the contents of CTC and ECTC accumulated in seedlings increased. The experiments revealed that the abilities of pakchoi to accumulate CTC were stronger than for ECTC and the stress was correspondingly greater.关键词
金霉素/差向金霉素/小白菜/抗氧化酶系统/积累Key words
chlortetracycline/ 4-epi-chlortetracycline/ pakchoi (Brassica campestris)/ antioxidant enzyme system/ accumulation分类
农业科技引用本文复制引用
魏瑞成,裴燕,政晓丽,朱旭博,陈明,王冉..金霉素和其代谢物胁迫对小白菜幼苗生长和抗氧化酶活性及累积效应的影响[J].草业学报,2011,20(5):102-110,9.基金项目
江苏省农业科技自主创新资金(CX(09)618)和环保公益性行业科研专项(200809092A)资助. （CX(09）
