{"refrec":{"BRefID":392723,"RR":"<b>Egas, R.A.; Sahonero Canavesi, D.; Bale, N.J.; Koenen, M.; Yildiz, C.; Villanueva, L.; Sousa, D.Z.; Sánchez-Andrea, I.</b> (2024). Acetic acid stress response of the acidophilic sulfate reducer <i>Acididesulfobacillus acetoxydans</i>. <i>Environ. Microbiol. 26(2)</i>: e16565. <a href=\"https://dx.doi.org/10.1111/1462-2920.16565\" target=\"_blank\">https://dx.doi.org/10.1111/1462-2920.16565</a>","BEntID":390487,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Environ. Microbiol. 26(2)</i>: e16565. <a href=\"https://dx.doi.org/10.1111/1462-2920.16565\" target=\"_blank\">https://dx.doi.org/10.1111/1462-2920.16565</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Egas, R.A.; Sahonero Canavesi, D.; Bale, N.J.; Koenen, M.; Yildiz, C.; Villanueva, L.; Sousa, D.Z.; Sánchez-Andrea, I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Egas, R.A. <i>et al.</i>","Englishabstract":"<span style=\"background-color:rgb(255,255,255);color:rgb(0,0,0);\">Acid mine drainage (AMD) waters are a severe environmental threat, due to their high metal content and low pH (pH &lt;3). Current technologies treating AMD utilize neutrophilic sulfate-reducing microorganisms (SRMs), but acidophilic SRM could offer advantages. As AMDs are low in organics these processes require electron donor addition, which is often incompletely oxidized into organic acids (e.g., acetic acid). At low pH, acetic acid is undissociated and toxic to microorganisms. We investigated the stress response of the acetotrophic </span><i>Acididesulfobacillus acetoxydans</i><span style=\"background-color:rgb(255,255,255);color:rgb(0,0,0);\"> to acetic acid. </span><i>A. acetoxydans</i><span style=\"background-color:rgb(255,255,255);color:rgb(0,0,0);\"> was cultivated in bioreactors at pH 5.0 (optimum). For stress experiments, triplicate reactors were spiked until 7.5 mM of acetic acid and compared with (non-spiked) triplicate reactors for physiological, transcriptomic, and membrane lipid changes. After acetic acid spiking, the optical density initially dropped, followed by an adaptation phase during which growth resumed at a lower growth rate. Transcriptome analysis revealed a downregulation of genes involved in glutamate and aspartate synthesis following spiking. Membrane lipid analysis revealed a decrease in </span><i>iso</i><span style=\"background-color:rgb(255,255,255);color:rgb(0,0,0);\"> and </span><i>anteiso</i><span style=\"background-color:rgb(255,255,255);color:rgb(0,0,0);\"> fatty acid relative abundance; and an increase of acetyl-CoA as a fatty acid precursor. These adaptations allow </span><i>A. acetoxydans</i><span style=\"background-color:rgb(255,255,255);color:rgb(0,0,0);\"> to detoxify acetic acid, creating milder conditions for other microorganisms in AMD environments.</span>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Acetic acid stress response of the acidophilic sulfate reducer <i>Acididesulfobacillus acetoxydans</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:32:57.964834","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2024-06-12","DateCreate":"2024-06-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.1111/1462-2920.16565"},"refs":null,"anarec":{"AnaID":392723,"PubliDate":2024,"Pagination":"e16565","XtraPublOfAnaID":null,"ISBN":null,"Volume":"26","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":59926,"SerRR":"Environmental Microbiology. Blackwell Scientific Publishers: Oxford.  ISSN 1462-2912; e-ISSN 1462-2920","StandardTitleSer":"Environmental Microbiology","ISSN":"1462-2912","AbbrevSer":"Environ. 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