欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

典型抗生素复合污染对小白菜生长发育的毒理效应

宫晓双1,2,安婧1*,张立娜1,2,魏树和1   

  1. 1中国科学院沈阳应用生态研究所污染生态与环境工程重点实验室, 沈阳 110016;2中国科学院大学, 北京 100049)
  • 出版日期:2019-02-10 发布日期:2019-02-10

Toxicological effects of combined pollution of typical antibiotics on the development of Chinese white cabbage (Brassica rapa) seedlings.

GONG Xiao-shuang1,2, AN Jing1*, ZHANG Li-na1,2, WEI Shu-he1   

  1. (1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 2College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China).
  • Online:2019-02-10 Published:2019-02-10

摘要: 采用盆栽试验研究了土壤外源四环素与金霉素(TC-CTC)、四环素与磺胺嘧啶(TC-SD)二元复合污染对小白菜幼苗生长发育的毒理效应。结果表明,0.5 mg·kg-1抗生素复合污染胁迫促进了小白菜芽长和根长的生长,但随着抗生素浓度的增加,小白菜芽长及根长生长逐渐受到抑制,根长受抑制程度高于芽长,25 mg·kg-1 TC-CTC处理对根长的抑制率达72.7%。与抗生素单一污染相比,二元复合污染胁迫使小白菜体内可溶性蛋白含量显著降低,暴露30 d时25 mg·kg-1 TC-CTC处理对可溶性蛋白抑制程度最大,抑制率为67.1%,同时超氧化物歧化酶、过氧化物酶和过氧化氢酶活性受到的抑制作用更显著,呈现协同作用。

关键词: 磷, 砷, 吸附, 黄壤, 红壤, 褐土

Abstract: We investigated the combined toxicological effects of tetracycline + chlortetracycline (TC-CTC) and tetracycline + sulfadiazine (TC-SD) on the growth and development of Chinese white cabbage seedlings under potculture. The results showed that the growth of shoots and roots of cabbage were promoted by the TC-CTC and TC-SD at a concentration of 0.5 mg·kg-1. With increasing concentration, the growth of shoots and roots were gradually inhibited. The inhibitive effects on root length were higher than that on shoot length. The inhibition rate of root length was up to 72.7% by TCCTC at 25 mg·kg-1. Compared to single pollutant, TC-CTC and TC-SD significantly decreased the content of soluble protein in cabbage. The maximum inhibition rate of 67.1% was presented in the treatment of TC-CTC at 25 mg·kg-1 after 30 days. Moreover, the activities of superoxide dismutase, peroxidase and catalase were inhibited more under such treatment, highlighting a synergistic effect.

Key words: Phosphorus, Arsenic, Adsorption, Yellow soil, Red soil, Brown soil