您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Biodegradation of dibutyl phthalate by a novel endophytic Bacillus subtilis strain HB-T2 under in-vitro and in-vivo conditions

文献类型： 外文期刊

作者： Xu, Wen-Jun 1 ; Wan, Qun 2 ; Wang, Wen-Feng 2 ; Wang, Ya 2 ; Feng, Fa-yun 3 ; Cheng, Jin-Jin 2 ; Yuan, Jian-Jun 1 ; Yu, X 1 ;

作者机构： 1.Quanzhou Normal Univ, Coll Oceanol & Food Sci, Key Lab Inshore Resources Biotechnol, Quanzhou 362000, Peoples R China

2.Minist Agr, Key Lab Food Qual & Safety Jiangsu Prov, State Key Lab Breeding Base, Key Lab Control Technol & Stand Agroprod Safety &, Nanjing 210014, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, 50 Zhongling St, Nanjing 210014, Peoples R China

关键词： Endophytic bacteria; dibutyl phthalate; isolation; bacterial biodegradation; intermediate

期刊名称：ENVIRONMENTAL TECHNOLOGY （ 影响因子：3.247； 五年影响因子：2.699 ）

ISSN： 0959-3330

年卷期：

页码：

收录情况： SCI

摘要： The environmental prevalence and potential toxicity of dibutyl phthalate (DBP) motivate the attempt to develop feasible strategies to deal with DBP contamination. In this study, a strain of endphytic bacteria HB-T2 was isolated from sorrel roots and identified as Bacillus sp. by analysing its morphology, physiology, biochemistry and 16S rDNA sequence. The degradation efficiency of DBP by HB-T2 was almost identical under the temperature of 30 similar to 40 degrees C, but was significantly enhanced as the culture pH and inoculum size increases from 6.0 to 8.0, and 1% to 5% respectively. The degradation kinetics of DBP could be well described by the first-order kinetic model, with the degradation half-life ranging from 1.59 to 7.61 h when the initial concentrations of DBP were in the range of 5-20 mg/L. LC-MS analysis of the culture samples taken at varying intervals revealed monobutyl phthalate, phthalic acid and protocatechuic acid as the major metabolic intermediates during the degradation process. HB-T2 exhibited an excellent capability to degrade a wide range of phthalate esters (PAEs), especially butyl benzyl phthalate (BBP), dipentyl phthalate (DPP), and diisobutyl phthalate (DIBP). Inoculation of HB-T2 into Chinese cabbage (Brassica chinensis L.) growing in DBP-contaminated soils could significantly reduce the DBP levels in plant tissues and relieve the phytotoxic effects of DBP. Results of this study highlighted the great potential of this novel endophytic Bacillus subtilis strain HB-T2 for bioremediation of PAEs contamination and improvement of agricultural product safety by reducing PAEs accumulation in edible crops.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台