PMID- 31301204 OWN - NLM STAT- MEDLINE DCOM- 20191216 LR - 20200108 IS - 1365-2672 (Electronic) IS - 1364-5072 (Linking) VI - 127 IP - 5 DP - 2019 Nov TI - Facultative and anaerobic consortia of haloalkaliphilic ureolytic micro-organisms capable of precipitating calcium carbonate. PG - 1479-1489 LID - 10.1111/jam.14384 [doi] AB - AIMS: Development of biomineralization technologies has largely focused on microbially induced carbonate precipitation (MICP) via Sporosarcina pasteurii ureolysis; however, as an obligate aerobe, the general utility of this organism is limited. Here, facultative and anaerobic haloalkaliphiles capable of ureolysis were enriched, identified and then compared to S. pasteurii regarding biomineralization activities. METHODS AND RESULTS: Anaerobic and facultative enrichments for haloalkaliphilic and ureolytic micro-organisms were established from sediment slurries collected at Soap Lake (WA). Optimal pH, temperature and salinity were determined for highly ureolytic enrichments, with dominant populations identified via a combination of high-throughput SSU rRNA gene sequencing, clone libraries and Sanger sequencing of isolates. The enrichment cultures consisted primarily of Sporosarcina- and Clostridium-like organisms. Ureolysis rates and direct cell counts in the enrichment cultures were comparable to the S. pasteurii (strain ATCC 11859) type strain. CONCLUSIONS: Ureolysis rates from both facultatively and anaerobically enriched haloalkaliphiles were either not statistically significantly different to, or statistically significantly higher than, the S. pasteurii (strain ATCC 11859) rates. Work here concludes that extreme environments can harbour highly ureolytic active bacteria with potential advantages for large scale applications, such as environments devoid of oxygen. SIGNIFICANCE AND IMPACT OF THE STUDY: The bacterial consortia and isolates obtained add to the possible suite of organisms available for MICP implementation, therefore potentially improving the economics and efficiency of commercial biomineralization. CI - (c) 2019 The Society for Applied Microbiology. FAU - Skorupa, D J AU - Skorupa DJ AUID- ORCID: 0000-0001-9007-5919 AD - Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA. AD - Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA. FAU - Akyel, A AU - Akyel A AUID- ORCID: 0000-0003-2474-2335 AD - Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA. AD - Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA. FAU - Fields, M W AU - Fields MW AD - Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA. AD - Department of Microbiology and Immunology, Montana State University, Bozeman, MT, USA. FAU - Gerlach, R AU - Gerlach R AD - Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA. AD - Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA. LA - eng SI - GENBANK/SRP127176 SI - GENBANK/MG682464 SI - GENBANK/MG382488 SI - GENBANK/MG674285 SI - GENBANK/MG674286 GR - DE-FG02-13ER86571/U.S. Department of Energy/ PT - Journal Article DEP - 20190819 PL - England TA - J Appl Microbiol JT - Journal of applied microbiology JID - 9706280 RN - 0 (Alkalies) RN - 8W8T17847W (Urea) RN - H0G9379FGK (Calcium Carbonate) SB - IM MH - Alkalies/*metabolism MH - Anaerobiosis MH - Bacteria/metabolism MH - Calcium Carbonate/chemistry/*metabolism MH - Geologic Sediments/microbiology MH - Microbial Consortia MH - Sporosarcina/genetics/isolation & purification/*metabolism MH - Urea/*metabolism OTO - NOTNLM OT - bio-inventory OT - biomineralization OT - calcium carbonate OT - haloalkaliphile OT - ureolysis activity EDAT- 2019/07/14 06:00 MHDA- 2019/12/18 06:00 CRDT- 2019/07/14 06:00 PHST- 2018/12/12 00:00 [received] PHST- 2019/06/12 00:00 [revised] PHST- 2019/07/10 00:00 [accepted] PHST- 2019/07/14 06:00 [pubmed] PHST- 2019/12/18 06:00 [medline] PHST- 2019/07/14 06:00 [entrez] AID - 10.1111/jam.14384 [doi] PST - ppublish SO - J Appl Microbiol. 2019 Nov;127(5):1479-1489. doi: 10.1111/jam.14384. Epub 2019 Aug 19.