您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The nitrogen removal characterization and ecological risk assessment of Bacillus sp. isolated from mariculture systems in China with spatiotemporal difference

文献类型： 外文期刊

作者： Zhang, Qian 1 ; Wang, Yingeng 2 ; Zhang, Zheng 2 ; Yu, Yongxiang 2 ; Wang, Chunyuan 2 ; Liao, Meijie 2 ; Rong, Xiaojun 2 ; Zhang, Zhiqi 2 ; Li, Bin 2 ; Ge, Jianlong 2 ; Wang, Jinjin 2 ; Sun, Xingbin 2 ; Sun, Xingbin 2 ; Sun, Xingbin 2 ;

作者机构： 1.Qingdao Agr Univ, Sch Marine Sci & Engn, Qingdao, Shandong, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao, Shandong, Peoples R China

3.Lao Shan Lab Qingdao, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Shandong, Peoples R China

期刊名称：PLOS ONE （ 影响因子：2.6； 五年影响因子：3.2 ）

ISSN： 1932-6203

年卷期： 2025 年 20 卷 3 期

页码：

收录情况： SCI

摘要： The accumulation of nitrogen compounds may worsen the aquatic environment and cause serious economic losses in the aquaculture industry. In this study, the denitrification performance and ecological safety of 120 Bacillus sp. isolates with spatial and temporal differences were evaluated based on the aspects of hemolysis, drug resistance, denitrification performance, and purification effect for mariculture wastewater. Firstly, 55/120 safe strains with no hemolytic activity were detected through hemolysis testing. Then, based on selective denitrification medium and colorimetric reagent method, 34/55 Bacillus sp. with denitrification effect were screened. For these 34 Bacillus sp. isolates, the drug resistance phenotype and genotype, denitrification genes, and enzyme activities related to the nitrogen metabolizing (AMO, HAO, NAR, NIR) were examined. And the MARI was 0.00-0.25, with a multi-drug resistance rate of 17.6%. The drug resistance genes tetB, blaTEM, and cfr and the denitrification genes nap, nor, and narG were detected. Ultimately, 27/34 strains with denitrification function and ecological safety were obtained. In addition, eight Bacillus sp. showed certain denitrification effects on nitrogen-containing wastewater treatment. Among them, B. subtilis B24 has outstanding denitrification ability, with removal rates of 92%, 62%, 68%, and 30% for NH4 + -N, NO2--N, NO3--N, and TN in simulated wastewater, respectively. It also has a good denitrification effect in practical applications. This study provides candidate bacterial strains for the treatment of mariculture wastewater.

  • 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：中国水产科学研究院

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