International Biodeterioration & Biodegradation最新文献_第2页

Insights on mitigation, fumigant persistence and oviposition deterrence of Callosobruchus chinensis using Ocimum gratissimum essential oil

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-03-06 DOI: 10.1016/j.ibiod.2025.106048

Archana V. Remesh , C.S. Vivek Babu

{"title":"Insights on mitigation, fumigant persistence and oviposition deterrence of Callosobruchus chinensis using Ocimum gratissimum essential oil","authors":"Archana V. Remesh , C.S. Vivek Babu","doi":"10.1016/j.ibiod.2025.106048","DOIUrl":"10.1016/j.ibiod.2025.106048","url":null,"abstract":"<div><div>An increased human population rate has advanced the need to manage production and shelf life of food grains. Significant loss of food grains by insect pests has led to the overuse of chemical pesticides for their management. The present study focuses for an alternative to synthetic pesticides, a natural derived insecticidal biorational from <em>Ocimum gratissimum</em> (<em>O. gratissimum</em>) essential oil (EO) against <em>Callosobruchus chinensis</em> (<em>C. chinensis</em>) which is a notable pest responsible for quantitative and qualitative loss of stored pulses. The EO obtained from unique <em>Ocimum</em> chemotype contains thymol (26.67%), gamma terpinene (19.98%) and o-cymene (13.54%). The insecticidal toxicities (fumigant and contact) of EO showed significant death rate (100%) of <em>C. chinensis</em> at 24 h. Additionally, EO concentrations with 10%–50% showed good oviposition deterrence of <em>C. chinensis</em>. SEM analysis of EO treated <em>C. chinensis</em> exhibited disintegrated setae on elytral surface. Besides, treated grains has revealed no significant residual persistence of aroma and retained germination. Hence, <em>O. gratissimum</em> EO might be a potential biorational entrant for the effective control of <em>C. chinensis</em>.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"201 ","pages":"Article 106048"},"PeriodicalIF":4.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mussel settlement mediated by calcined mussel shell powder through outer membrane protein gene ompW

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-03-06 DOI: 10.1016/j.ibiod.2025.106049

Yuyi Wang , Yu Tao , Ruiheng Chang , Zheng Li , Lihua Peng , Jin-Long Yang , Xiao Liang

{"title":"Mussel settlement mediated by calcined mussel shell powder through outer membrane protein gene ompW","authors":"Yuyi Wang , Yu Tao , Ruiheng Chang , Zheng Li , Lihua Peng , Jin-Long Yang , Xiao Liang","doi":"10.1016/j.ibiod.2025.106049","DOIUrl":"10.1016/j.ibiod.2025.106049","url":null,"abstract":"<div><div>Calcined mussel shell powder (CMSP) is an environmentally friendly coating material to inhibit mussel settlement, making it a potential sustainable strategy against marine biofouling. However, the molecular mechanism by which CMSP mediates mussel settlement is still unclear. This study aimed to investigate how CMSP coating affects the settlement of <em>Mytilus coruscus</em> through the outer membrane protein gene <em>ompW</em>. In this study, the marine bacterium <em>Pseudoalteromonas marina</em>, which exhibited stable induction activity on mussel settlement, was used as the test strain. Our results showed that CMSP coating regulated the levels of Ca<sup>2+</sup> in seawater to influence the expression of the outer membrane protein OmpW. Notably, after the <em>ompW</em> gene was deleted, the production of extracellular polymeric substances (EPS) was significantly reduced, and the induction activity of the Δ<em>ompW</em> biofilm decreased by 38.33%. Upon the analysis of EPS, it was discovered that the colanic acid content in the biofilm of Δ<em>ompW</em> strain was significantly decreased by 70.92% compared to that in <em>P.marina</em> biofilm. Interestingly, the OmpW protein alone did not induce the settlement of plantigrades directly, the levels of extracellular polysaccharides and induction activity were restored to those of the wild-type biofilm when 10 mg/L OmpW were added to the Δ<em>ompW</em> biofilm. This suggests that CMSP regulates extracellular polysaccharides through the outer membrane protein gene <em>ompW</em>, which in turn mediates mussel settlement. These findings provide further insight into the mechanism by which CMSP inhibits the settlement of fouling organisms and the interaction between OmpW and marine invertebrates.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"201 ","pages":"Article 106049"},"PeriodicalIF":4.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uptake of plasmid reduces the adaptation of Shigella flexneri to disinfectants and increases transmission of antibiotic resistance genes

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-03-03 DOI: 10.1016/j.ibiod.2025.106050

Xiaojun Lin , Ruiqi Han , Huishi Peng , Junwei Huang , Yanbin Xu , Qingxia Qiao , Lu Huang

{"title":"Uptake of plasmid reduces the adaptation of Shigella flexneri to disinfectants and increases transmission of antibiotic resistance genes","authors":"Xiaojun Lin , Ruiqi Han , Huishi Peng , Junwei Huang , Yanbin Xu , Qingxia Qiao , Lu Huang","doi":"10.1016/j.ibiod.2025.106050","DOIUrl":"10.1016/j.ibiod.2025.106050","url":null,"abstract":"<div><div>Antibiotic-resistance pathogens pose an increasing threat to humanity. But, whether pathogens can increase their resistance to disinfectants with their antibiotic resistances increasing owing to conjugation. In this study, <em>Shigella flexneri</em> (<em>S. flexneri</em>) was selected as the representative pathogenic recipient. Under the stress treatments of glutaraldehyde solution (GS), didecyldimethylammonium bromide solution (DS), and a combination of these two, the horizontal transfer of RP4 plasmid to <em>S. flexneri</em> resulted in reduced adaptation to these treatments. The abundance of sulfanilamide resistance genes (SRGs), disinfectant resistance genes (DRGs) and <em>intI</em>1 in <em>S. flexneri</em> transconjugant increased by 30.0%–322%, 18.3%–119% and 28.2%–136%, respectively. <em>intI</em>1 may be integrated into the plasmid, leading to an increase of higher gene abundance and significant positive correlations with <em>tetM</em>, <em>tetO</em>, <em>sul</em>1, <em>sul</em>2, <em>qacE</em>, <em>qacΔE1</em>, <em>tetA</em>, <em>tnpR</em> and <em>aphA</em> in transconjugant (<em>p</em> ≤ 0.05). A modest reduction in the conjugation frequency protected the bacteria from the transition invasion of GDS disinfectants and promoted the stable presence of RP4 plasmids in <em>S. flexneri</em>. Specifically, at the concentration of 0.1 mg/L, GDS facilitated plasmid transfer and then promoted the proliferation of <em>intI</em>1 by increasing cell membrane permeability, cellular viability and extracellular polymeric substance (EPS) content in surviving bacteria, resulting in an increased abundance of antibiotic resistance genes (ARGs) and DRGs in transconjugant. Therefore, resistant plasmid effectively improves the response ability of pathogenic bacteria to disinfectants, so that bacterium have the potential to develop multiple antibiotics resistance.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"201 ","pages":"Article 106050"},"PeriodicalIF":4.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elucidating the mechanisms underlying heterotrophic nitrification-aerobic denitrification and cold tolerance in Pseudomonas fragi EH-H1 under weakly acidic conditions

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-03-01 DOI: 10.1016/j.ibiod.2025.106046

Qifeng Wu, Tengxia He, Mengping Chen, Manman Zhang

{"title":"Elucidating the mechanisms underlying heterotrophic nitrification-aerobic denitrification and cold tolerance in Pseudomonas fragi EH-H1 under weakly acidic conditions","authors":"Qifeng Wu, Tengxia He, Mengping Chen, Manman Zhang","doi":"10.1016/j.ibiod.2025.106046","DOIUrl":"10.1016/j.ibiod.2025.106046","url":null,"abstract":"<div><div>Low temperatures and weakly acidic environments seriously inhibit heterotrophic nitrification and aerobic denitrification (HN-AD) functional bacteria. In this study, <em>Pseudomonas fragi</em> EH-H1 efficiently performed HN-AD at 15 °C under pH 6.2. Ammonium and nitrate removal efficiencies of 100% (20 h) and 99.02% (30 h) were achieved, with corresponding total nitrogen removal rates of 97.74% and 97.14%, respectively. Nitrogen balance analysis and N<sub>2</sub>O measurements indicated that strain EH-H1 may eliminate nitrogen through the pathways: NH<sub>4</sub><sup>+</sup>→gaseous nitrogen and NO<sub>3</sub><sup>−</sup>→NO<sub>2</sub><sup>−</sup>→gaseous nitrogen. Genome-wide annotation of genes associated with nitrogen metabolism (<em>glnA</em>, <em>gltB</em>, <em>gdhA</em>, <em>nasA</em>, <em>nirBD</em>, <em>narK</em> and <em>norR</em>) demonstrated that strain EH-H1 contained a fully functional assimilatory nitrate reduction system. Concurrently, the genes of <em>cspA</em>, <em>caps</em>, <em>ibpA</em>, <em>gadB</em> and <em>gadC</em> that were related to cold and acid tolerance were detected. These results suggested that the genes for HN-AD in strain EH-H1 under low-temperature and weakly acidic conditions may differ from those of conventional HN-AD bacteria.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"200 ","pages":"Article 106046"},"PeriodicalIF":4.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced antibiotics and antibiotics resistance genes removal from aquaculture wastewater by microalgae-based system induced with plant hormones

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-03-01 DOI: 10.1016/j.ibiod.2025.106045

Chunzhi Zhao , Bei Lu , Zhengfang Wang , Jing Wei , Yongjun Zhao , Shoubing Wang

{"title":"Enhanced antibiotics and antibiotics resistance genes removal from aquaculture wastewater by microalgae-based system induced with plant hormones","authors":"Chunzhi Zhao , Bei Lu , Zhengfang Wang , Jing Wei , Yongjun Zhao , Shoubing Wang","doi":"10.1016/j.ibiod.2025.106045","DOIUrl":"10.1016/j.ibiod.2025.106045","url":null,"abstract":"<div><div>This study innovatively investigated the impact of exogenous strigolactone (GR24) addition on the removal of conventional nutrients, representative antibiotics (including tetracyclines (doxycycline hydrochloride and tetracycline hydrochloride), quinolones (ciprofloxacin and norfloxacin), and sulfonamides (sulfadiazine, sulfamethoxazole, and sulfamethoxazole)), and antibiotic resistance genes (ARGs) from aquaculture wastewater using a symbiotic system comprising <em>Chlorella vulgaris</em> (<em>C. vulgaris</em>) + S395-2 + <em>Clonostachys rosea</em> (<em>C</em>. <em>rosea</em>). The results showed that the optimal GR24 concentration was 10<sup>−9</sup> M. At this concentration, the growth and photosynthetic efficiency of the symbiotic system were enhanced. It had the best removal effect on tetracycline antibiotics. The removal rates of total phosphorus, total nitrogen, and chemical oxygen demand reached 84.18% ± 8.26%, 82.24% ± 8.13%, and 78.25% ± 7.63%, respectively. Moreover, it had high removal efficiency and slow rebound for antibiotic resistance genes such as <em>sul</em>2 and <em>inti</em>1. This research provides a new approach for the efficient treatment of aquaculture wastewater, contributing to pollution reduction, water ecosystem protection, and the sustainable development of the aquaculture industry.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"200 ","pages":"Article 106045"},"PeriodicalIF":4.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable treatment of glass industry wastewater using biogenic Zinc oxide nanoparticles: Antibacterial and photocatalytic efficacy

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-27 DOI: 10.1016/j.ibiod.2025.106036

Yamini Vinayagam, Ganesh Venkatraman, Devi Rajeswari V.

{"title":"Sustainable treatment of glass industry wastewater using biogenic Zinc oxide nanoparticles: Antibacterial and photocatalytic efficacy","authors":"Yamini Vinayagam, Ganesh Venkatraman, Devi Rajeswari V.","doi":"10.1016/j.ibiod.2025.106036","DOIUrl":"10.1016/j.ibiod.2025.106036","url":null,"abstract":"<div><div>The research presents an innovative approach to addressing toxic industrial wastewater pollutants by nano-bioremediation for effective without adverse environmental impacts. Zinc oxide nanoparticles were synthesized by employing <em>Sesbania grandiflora</em> leaf extract and characterized for their properties. Industrial effluents, particularly from glass industries, often form gelatinous particles that are hard to separate. These nanoparticles remove such gelatinous particles via density-based settlement, enhanced by flocculants. Despite flocculants' susceptibility to removal from treatment tank filters, the nanoparticles effectively convert hazardous compounds, including double-bonded aliphatic compounds, aromatics, azides, imines, nitro, and halogens, into weaker, environmentally benign single-bond aliphatic molecules, with complete degradation of azide, imine, and nitro compounds observed. Tests revealed the nanoparticles' high efficiency under aerobic and anaerobic conditions at pH 7, significantly reducing Total Dissolved Solids up to 70% in wastewater. Leveraging phytochemical richness in plants, biosynthesis offers an affordable, eco-friendly, and time-efficient approach. Hemolytic and MTT assays confirmed the nanoparticle's non-cytotoxicity, emphasizing their potential in wastewater treatment. The nanoparticles exhibited efficient antioxidant, antibacterial, and dye degradation properties, with 92.5% disintegration of crystal violet dye in 4 h and 41.1% in 2 h, showcasing their potent role as bioremediation agents.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"200 ","pages":"Article 106036"},"PeriodicalIF":4.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From waste to resource: Sustainable reuse of spent shiitake mushroom substrate in subsequent production cycles

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-27 DOI: 10.1016/j.ibiod.2025.106034

Wagner Gonçalves Vieira Junior , Cinthia Elen Cardoso Caitano , Lucas da Silva Alves , Pedro Afonso Gomes Teixeira , Ralph Noble , José Emilio Pardo , Diego Cunha Zied

{"title":"From waste to resource: Sustainable reuse of spent shiitake mushroom substrate in subsequent production cycles","authors":"Wagner Gonçalves Vieira Junior , Cinthia Elen Cardoso Caitano , Lucas da Silva Alves , Pedro Afonso Gomes Teixeira , Ralph Noble , José Emilio Pardo , Diego Cunha Zied","doi":"10.1016/j.ibiod.2025.106034","DOIUrl":"10.1016/j.ibiod.2025.106034","url":null,"abstract":"<div><div>The valorization of agricultural waste a substrate in mushroom cultivation promotes a circular economy and environmental sustainability. However, after food producing, a byproduct spent mushroom substrate (SMS) is generated. Reusing SMS in new mushroom production cycles presents an opportunity for recycling and cost reduction. This study aimed to utilize SMS from shiitake (<em>Lentinula edodes</em>) cultivation in subsequent cycles while reducing the bran concentration in the substrate. Three cultivation cycles were conducted using two initial substrates (high-N and low-N). SMS was added at 5, 10, and 20% w/w, along with a control formulation without SMS. Results indicated that reducing bran in the low-N substrate decreased shiitake yields, regardless of SMS addition. SMS was effective in the third cycle, particularly for the high-N substrate with 5 or 10% SMS. The effectiveness of replacing bran with SMS depended on nutrient availability, especially nitrogen. Further studies should explore the economic feasibility, energy consumption, emissions, and carbon sequestration associated with this technology.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"200 ","pages":"Article 106034"},"PeriodicalIF":4.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-depth analysis of biological regulation and process characteristics in the treatment of bath wastewater using oxic-anoxic biological magnetically suspended fluidized bed reactor (O-ABMSFBR)

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-26 DOI: 10.1016/j.ibiod.2025.106035

Yunxiao Ban, Qiang Dou, Liyuan Liu, Cong Ma, Zhijie Wan

{"title":"In-depth analysis of biological regulation and process characteristics in the treatment of bath wastewater using oxic-anoxic biological magnetically suspended fluidized bed reactor (O-ABMSFBR)","authors":"Yunxiao Ban, Qiang Dou, Liyuan Liu, Cong Ma, Zhijie Wan","doi":"10.1016/j.ibiod.2025.106035","DOIUrl":"10.1016/j.ibiod.2025.106035","url":null,"abstract":"<div><div>This study proposes an Oxic-Anoxic Biological Magnetically Suspended Fluidized Bed Reactor (O-ABMSFBR) for the treatment of bath wastewater containing high concentrations of linear alkylbenzene sulfonates (LAS) and low levels of organic matter and nutrients. The results indicate that when the inflow rate is maintained between 5.2 and 6.0 mL/min, the removal rates of LAS, turbidity, and Chemical Oxygen Demand with Dichromate (CODcr) exceed 94%, 90%, and 83%, respectively. Combined with high-throughput sequencing, it was found that under aerobic conditions, LAS can be degraded into sulfates and sulfites; under anoxic conditions, sulfates and sulfites are reduced to lower valence states and ultimately converted into organic sulfur for microbial metabolism. The magnetic field assists microorganisms in resisting the toxicity of LAS, enhances their biological activity, promotes bacterial adaptation to LAS stress, and strengthens bioflocculation, thereby improving the removal efficiency of various pollutants by the O-ABMSFBR. The magnetic levitation layer facilitates the formation of both the activated sludge layer and the biofilm layer, fostering the establishment of an aerobic-anoxic environment within the reactor, enhancing the removal of LAS and their degradation products, and demonstrating greater resilience to fluctuations in organic load. The O-ABMSFBR effectively enhances mixing efficiency and mass transfer capacity between the liquid phase and activated sludge, characterized by a relatively short hydraulic retention time (HRT). The effluent concentrations of LAS, CODcr, and turbidity meet greywater reuse standards and exhibit significant potential for treating low-pollution wastewater.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"200 ","pages":"Article 106035"},"PeriodicalIF":4.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genomics and biodegradation properties of an oleophilic bacterium isolated from shale oil sludge

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-24 DOI: 10.1016/j.ibiod.2025.106028

Shuang Deng , Changfu Cai , Junwei Wang , Da Qin , Liyun Yu , Jiabin Wang , Shuang Dai , Jialin Fan , Chunlong Zhang , Liyang Li , Wei Song , Xilin Hou

{"title":"Genomics and biodegradation properties of an oleophilic bacterium isolated from shale oil sludge","authors":"Shuang Deng , Changfu Cai , Junwei Wang , Da Qin , Liyun Yu , Jiabin Wang , Shuang Dai , Jialin Fan , Chunlong Zhang , Liyang Li , Wei Song , Xilin Hou","doi":"10.1016/j.ibiod.2025.106028","DOIUrl":"10.1016/j.ibiod.2025.106028","url":null,"abstract":"<div><div>Shale oil exploitation is accompanied with the generation of a large quantity of oily sludge. In order to provide suitable microbial resources for treating the growing amount of oily sludge, a microbial strain was isolated and purified from the sewage sludge produced in Daqing shale oil field in this study. The isolated strain in the sludge, temporarily termed FM-1, was identified by morphological, biochemical experiments and 16S rDNA sequencing. At the same time, the protein coding genes of the strain FM-1 were classified by genome-wide sequencing and analyzed its genetic characteristics. The degradation effect of FM-1 was detected to C<sub>12</sub>, C<sub>17</sub> and crude oil and sludge samples by gas chromatography and spectrophotometer. The results confirmed that FM-1 was <em>Bacillus proteolyticus</em>. The whole genome sequencing data analysis showed that there were 1495 protein coding genes related to metabolism, including 384 genes for carbohydrate metabolism. All the genes related to the degradation function, such as <em>almA, mdhA, CYPs, ladA, catD, catE</em> and <em>fadE,</em> were enriched in the oxidative phosphorylation signaling pathway, indicating that FM-1 had abundant genes associated with petroleum hydrocarbon degradation. The strain FM-1 could utilize C<sub>10</sub>-C<sub>40</sub> petroleum hydrocarbons as the sole carbon source, and the degradation rate of crude oil was 17.5% in seven days under the experimental conditions. The degradation rate for petroleum hydrocarbon pollutants in shale oil sludge was as high as 91.5% in 28 days. Literature and patent searches found that <em>Bacillus proteolyticus</em> was a kind of new efficient petroleum hydrocarbon degrading bacterium, which had been obtained the Chinese invention patent.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"200 ","pages":"Article 106028"},"PeriodicalIF":4.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulation of microbial activity based on quorum sensing: Implications for biological wastewater treatment

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-23 DOI: 10.1016/j.ibiod.2025.106029

Yu Bao, Bairen Yang, Ruili Yang, Jiajie Wang, Anqi Geng, Caiyun Zhang, Zhuqiu Sun

{"title":"Regulation of microbial activity based on quorum sensing: Implications for biological wastewater treatment","authors":"Yu Bao, Bairen Yang, Ruili Yang, Jiajie Wang, Anqi Geng, Caiyun Zhang, Zhuqiu Sun","doi":"10.1016/j.ibiod.2025.106029","DOIUrl":"10.1016/j.ibiod.2025.106029","url":null,"abstract":"<div><div>Microbial activity regulated by quorum sensing (QS) can directly mediate microbial growth, reproduction and thus better adaptation to the external environment. In addition, microbial activity can influence microbial community structure to achieve more efficient degradation in wastewater treatment. Currently, the applied researches on QS-regulated microbial activity to enhance the performance of wastewater biological treatment had been widely reported, but there is a lack of review on the research on QS to enhance the functional level of microbial activity in microbial systems. In this paper, we explored the possible mechanisms of QS regulation of microbial activity from the perspectives of extracellular polymeric substances (EPS) and biofilm structure, and reviewed the effects of QS on microbial activity. By synthesizing the function of QS in the regulation of microbial activity, the application of QS regulated microbial activity in wastewater biological treatment was further pointed out. On this basis, the metabolism and reproduction of microorganisms in wastewater can be more deeply understood and controlled, and it is proposed that the future focus on in-depth exploration of QS micro-mechanism, and further study the general applicability of QS regulation of microbial activity in actual wastewater treatment.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"199 ","pages":"Article 106029"},"PeriodicalIF":4.1,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0