{"title":"Corrosion of stainless steel by Desulfovibrio species through end-to-end connection attachment","authors":"","doi":"10.1016/j.corsci.2024.112432","DOIUrl":null,"url":null,"abstract":"<div><p>Electron transport via sulfate-reducing bacteria (SRB) is a major cause of anaerobic corrosion. In this study, we elucidated the attachment process and metabolic mode of <em>Desulfovibrio bizertensis</em> SY-1 on 316L SS via surface analysis and transcriptomic. Surface morphology observation revealed <em>D. bizertensis</em> could survive on SS surfaces for long time through end-to-end connections. Reducing the carbon source in the medium decreased the time needed to form these end-to-end connections and increased their length, creating more obvious pitting on the coupons. Gene expression found that attached cells obtained energy mainly through oxidative phosphorylation and the oxidation of succinate, while sulfate reduction genes were downregulated. These findings further expand our understanding of SRB biofilm and metabolic mechanism.</p></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":null,"pages":null},"PeriodicalIF":7.4000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X24006279","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Electron transport via sulfate-reducing bacteria (SRB) is a major cause of anaerobic corrosion. In this study, we elucidated the attachment process and metabolic mode of Desulfovibrio bizertensis SY-1 on 316L SS via surface analysis and transcriptomic. Surface morphology observation revealed D. bizertensis could survive on SS surfaces for long time through end-to-end connections. Reducing the carbon source in the medium decreased the time needed to form these end-to-end connections and increased their length, creating more obvious pitting on the coupons. Gene expression found that attached cells obtained energy mainly through oxidative phosphorylation and the oxidation of succinate, while sulfate reduction genes were downregulated. These findings further expand our understanding of SRB biofilm and metabolic mechanism.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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