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A highly efficient oxytetracycline hydrochloride (OTC-HCl)-degrading strain, designated as Lysinibacillus sp. OTC-L20, was isolated from contaminated soil. Its taxonomic status was confirmed via 16S rDNA sequencing, and it represent a highly efficient OTC-HCl-degrading strain within the genus Lysinibacillus. Genomic sequencing revealed that its chromosome harbors multiple antibiotic resistance genes, including those conferring resistance to tetracyclines and aminoglycosides, which may be involved in the biotransformation of OTC-HCl. Under specific culture conditions (supplemented carbon source at 4g/L, initial pH 8, inoculum size 3%, and initial substrate concentration 60mg/L), the strain achieved a degradation rate of 79.80% for OTC-HCl on the 7th day of incubation. Using ultra-performance liquid chromatography-high resolution mass spectrometry (UPLC-HRMS), a total of 14major intermediate metabolites were identified, and four distinct degradation pathways were proposed, involving seven reaction types such as deamidation and enol-keto isomerization. Compared with the blank control group, the degradation products of OTC-L20exhibited significantly reduced antibacterial toxicity to Escherichia coli and Staphylococcus aureus, demonstrating that Lysinibacillus sp. OTC-L20is a highly efficient and environmentally safe OTC-HCl-degrading bacterium.

, authors=Jia-mei LI1, Zong-li KANG1, Ao-yu MA1, En-you ZHAO1, Hong-ling WANG2, Yu-hong YANG1, *, Li-yu DU3, *, authorsList=Jia-mei LI, Zong-li KANG, Ao-yu MA, En-you ZHAO, Hong-ling WANG, Yu-hong YANG, Li-yu DU, authorCompany=null, correspAuthors=Yu-hong YANG, Li-yu DU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314922227678667558, articleId=1314922227015967524, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=一株赖氨酸芽孢杆菌对盐酸土霉素降解效能及途径, columnId=1234106394572550190, journalTitle=中国环境科学, columnName=土壤污染与控制, runingTitle=null, highlight=null, articleAbstract=

从污染土壤中筛选出盐酸土霉素(OTC-HCl)高效降解菌株OTC-L20,经16S rDNA鉴定并命名为Lysinibacillus sp. OTC-L20,为目前已报道的Lysinibacillus属中具有高效降解OTC-HCl能力的菌株之一.基因组测序发现其染色体含四环素类抗生素、氨基糖苷类抗生素等多种耐药基因,可能参与OTC-HCl的生物转化.OTC-L20在特定条件(外加碳源添加量4g/L、pH = 8、接种量3%、初始底物浓度60mg/L)下,第7d对OTC-HCl的降解率达到79.80%.利用UPLC-HRMS测定到14种主要中间降解产物,通过脱酰胺、烯醇酮异构化等7种方式,分为4条降解路径.与空白对照组相比,OTC-L20降解产物对Escherichia coli和Staphylococcus aureus的生理毒性显著降低,表明其为高效安全盐酸土霉素降解菌.

, authors=李佳美1, 康宗利1, 马骜雨1, 赵恩佑1, 王虹玲2, 杨玉红1, *, 杜立宇3, *, authorsList=李佳美, 康宗利, 马骜雨, 赵恩佑, 王虹玲, 杨玉红, 杜立宇, authorCompany=null, correspAuthors=杨玉红, 杜立宇, authorNote=

李佳美(2000-),女,辽宁大连人,沈阳农业大学博士研究生,主要从事微生物降解环境污染物相关研究..

, correspAuthorsNote=
* 责任作者:杨玉红,副教授,
杜立宇,教授,.
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李佳美(2000-),女,辽宁大连人,沈阳农业大学博士研究生,主要从事微生物降解环境污染物相关研究..

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李佳美(2000-),女,辽宁大连人,沈阳农业大学博士研究生,主要从事微生物降解环境污染物相关研究..

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一株赖氨酸芽孢杆菌对盐酸土霉素降解效能及途径
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李佳美 1 , 康宗利 1 , 马骜雨 1 , 赵恩佑 1 , 王虹玲 2 , 杨玉红 1, * , 杜立宇 3, *
中国环境科学 | 土壤污染与控制 2026,46(2): 868-879
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中国环境科学 |土壤污染与控制 2026 , 46 (2) : 868 -879
一株赖氨酸芽孢杆菌对盐酸土霉素降解效能及途径
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李佳美(2000-),女,辽宁大连人,沈阳农业大学博士研究生,主要从事微生物降解环境污染物相关研究..

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李佳美(2000-),女,辽宁大连人,沈阳农业大学博士研究生,主要从事微生物降解环境污染物相关研究..

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李佳美1 , 康宗利1, 马骜雨1, 赵恩佑1, 王虹玲2, 杨玉红1, * , 杜立宇3, *
作者信息
  • 1.沈阳农业大学生物科学技术学院,辽宁 沈阳 110866
  • 2.沈阳科技学院化工与制药学院,辽宁 沈阳 113122
  • 3.沈阳农业大学土地与环境学院,辽宁 沈阳 110866
通讯作者:
* 责任作者:杨玉红,副教授,
杜立宇,教授,.
作者简介:

李佳美(2000-),女,辽宁大连人,沈阳农业大学博士研究生,主要从事微生物降解环境污染物相关研究..

Degradation efficiency and pathways of oxytetracycline hydrochloride by Lysinibacillus sp.
Jia-mei LI1 , Zong-li KANG1, Ao-yu MA1, En-you ZHAO1, Hong-ling WANG2, Yu-hong YANG1, * , Li-yu DU3, *
Affiliations
  • 1.College of Biosciences and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China
  • 2.College of Chemical and Pharmaceutical Engineering, Shenyang University of Science and Technology, Shenyang 113122, China
  • 3.College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
出版时间: 2026-02-20
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从污染土壤中筛选出盐酸土霉素(OTC-HCl)高效降解菌株OTC-L20,经16S rDNA鉴定并命名为Lysinibacillus sp. OTC-L20,为目前已报道的Lysinibacillus属中具有高效降解OTC-HCl能力的菌株之一.基因组测序发现其染色体含四环素类抗生素、氨基糖苷类抗生素等多种耐药基因,可能参与OTC-HCl的生物转化.OTC-L20在特定条件(外加碳源添加量4g/L、pH = 8、接种量3%、初始底物浓度60mg/L)下,第7d对OTC-HCl的降解率达到79.80%.利用UPLC-HRMS测定到14种主要中间降解产物,通过脱酰胺、烯醇酮异构化等7种方式,分为4条降解路径.与空白对照组相比,OTC-L20降解产物对Escherichia coli和Staphylococcus aureus的生理毒性显著降低,表明其为高效安全盐酸土霉素降解菌.

盐酸土霉素  /  赖氨酸芽孢杆菌  /  微生物降解  /  降解途径

A highly efficient oxytetracycline hydrochloride (OTC-HCl)-degrading strain, designated as Lysinibacillus sp. OTC-L20, was isolated from contaminated soil. Its taxonomic status was confirmed via 16S rDNA sequencing, and it represent a highly efficient OTC-HCl-degrading strain within the genus Lysinibacillus. Genomic sequencing revealed that its chromosome harbors multiple antibiotic resistance genes, including those conferring resistance to tetracyclines and aminoglycosides, which may be involved in the biotransformation of OTC-HCl. Under specific culture conditions (supplemented carbon source at 4g/L, initial pH 8, inoculum size 3%, and initial substrate concentration 60mg/L), the strain achieved a degradation rate of 79.80% for OTC-HCl on the 7th day of incubation. Using ultra-performance liquid chromatography-high resolution mass spectrometry (UPLC-HRMS), a total of 14major intermediate metabolites were identified, and four distinct degradation pathways were proposed, involving seven reaction types such as deamidation and enol-keto isomerization. Compared with the blank control group, the degradation products of OTC-L20exhibited significantly reduced antibacterial toxicity to Escherichia coli and Staphylococcus aureus, demonstrating that Lysinibacillus sp. OTC-L20is a highly efficient and environmentally safe OTC-HCl-degrading bacterium.

oxytetracycline hydrochloride  /  Lysinibacillus subtilis  /  microbial degradation  /  degradation pathway
李佳美, 康宗利, 马骜雨, 赵恩佑, 王虹玲, 杨玉红, 杜立宇. 一株赖氨酸芽孢杆菌对盐酸土霉素降解效能及途径. 中国环境科学, 2026 , 46 (2) : 868 -879 .
Jia-mei LI, Zong-li KANG, Ao-yu MA, En-you ZHAO, Hong-ling WANG, Yu-hong YANG, Li-yu DU. Degradation efficiency and pathways of oxytetracycline hydrochloride by Lysinibacillus sp.[J]. China Environmental Science, 2026 , 46 (2) : 868 -879 .
  • 辽宁省2025年度农业生态环境监测(019250312)
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  • 接收时间:2025-07-16
  • 首发时间:2026-10-08
  • 出版时间:2026-02-20
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  • 收稿日期:2025-07-16
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辽宁省2025年度农业生态环境监测(019250312)
作者信息
    1.沈阳农业大学生物科学技术学院,辽宁 沈阳 110866
    2.沈阳科技学院化工与制药学院,辽宁 沈阳 113122
    3.沈阳农业大学土地与环境学院,辽宁 沈阳 110866

通讯作者:

* 责任作者:杨玉红,副教授,
杜立宇,教授,.
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2种不同金属材料的力学参数
科
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属数
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genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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