土壤中四环素类抗生素降解及对小白菜根系生长发育的影响

发布时间：2018-01-02 16:26

本文关键词：土壤中四环素类抗生素降解及对小白菜根系生长发育的影响　出处：《环境科学学报》2017年05期 　论文类型：期刊论文

【摘要】：采用土培试验,分析了小白菜(Brassica campestris L.)的发芽率、生物量和根长指标对3种抗生素胁迫的敏感性,比较了不同土壤中四环素类抗生素污染对小白菜根长生长的影响,并研究了四环素类抗生素在不同土壤中的降解特性.结果表明,小白菜对3种抗生素的敏感性为根长发芽率生物量.抗生素处理土壤30 d时,4种土壤中小白菜根长对3种抗生素胁迫的敏感性均为砖红壤红壤青紫泥黑土;同种抗生素在4种土壤中的降解率为黑土青紫泥红壤砖红壤,同种土壤中3种抗生素的降解率为土霉素金霉素四环素.相关性分析发现,土壤中四环素类抗生素的含量与土壤有机质、氮磷钾含量和阳离子交换量呈显著负相关.
[Abstract]:A soil culture experiment, analysis of Chinese Cabbage (Brassica campestris L.) and the germination rate, root length and biomass sensitivity index stress of 3 kinds of antibiotics, effects of tetracycline antibiotics pollution in different soils on the growth of Pakchoi root length were compared, and the degradation of tetracycline antibiotics in different soils was studied. The results show that the sensitivity to 3 kinds of antibiotics for Chinese cabbage root biomass. The germination rate of antibiotic treated soil 30 d, sensitivity of 4 kinds of brassicachinensis under stress of root length to 3 kinds of antibiotics were latosol red soil Qingzini black soil; 4 kinds of antibiotics in the rate of degradation in soil for soil Qingzi soil red soil the brick red soil, 3 kinds of antibiotics in the same soil degradation rate of Oxytetracycline Tetracycline chlortetracycline. Correlation analysis showed that tetracycline antibiotics in soil and the content of soil organic matter, nitrogen phosphorus and potassium content and cation exchange The change has a significant negative correlation.

【作者单位】：浙江大学环境与资源学院污染环境修复与生态健康教育部重点实验室;
【基金】：国家高技术研究发展计划(863计划)(No.2012AA101405) 中央高校基本科研业务费专项资金(No.2016FZA6006)~~
【分类号】：S634.3;X53
【正文快照】： 1引言(Introduction)四环素类抗生素是目前使用最广泛、用量最大的抗生素种类之一(张浩等,2008),它们是由放线菌产生的一类广谱抗生素,其结构均含并四苯基本骨架,主要包括四环素、土霉素和金霉素等.因其抗菌谱广,价格低廉,在养殖、医用和农用等方面的应用不断增长,其环境污染

【相似文献】