PMID- 32882362 OWN - NLM STAT- MEDLINE DCOM- 20211014 LR - 20211014 IS - 1095-8657 (Electronic) IS - 1047-8477 (Linking) VI - 212 IP - 2 DP - 2020 Nov 1 TI - Comparison of carbonate precipitation induced by Curvibacter sp. HJ-1 and Arthrobacter sp. MF-2: Further insight into the biomineralization process. PG - 107609 LID - S1047-8477(20)30182-9 [pii] LID - 10.1016/j.jsb.2020.107609 [doi] AB - Microorganisms are generally involved in the nucleation, growth and phase transformation of carbonate minerals, and influence the development of their morphology and polymorphism. However, understanding of the process of microbially induced carbonate precipitation (MICP) remains limited. Herein, MICP experiments were carried out using Curvibacter sp. HJ-1 and Arthrobacter sp. MF-2 in M2 medium, and the processes of MICP were monitored. Bacterial cells induced the precipitation of carbonate by creating favorable physicochemical conditions and acting as nucleation templates for carbonate particles and thereby, markedly influenced the morphology and growth of the carbonate structure. The extracellular polymeric substance (EPS) secreted by the bacteria was readily absorbed by the precipitated carbonate, which modified its crystal growth orientation. The MgCO(3) content of Mg-calcite, induced by MF-2, was dramatically higher than that induced by HJ-1; HJ-1 promoted the formation and stability of aragonite. Multiple formation mechanisms coexisted during the evolution process of the mineral morphologies in the presence of the bacteria. The spherulites observed mainly evolved from dumbbell-like precursors in the presence of MF-2, whereas aggregate growth was the main formation mechanism of radial spherulites in the presence of HJ-1. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Zhang, Chonghong AU - Zhang C AD - College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. FAU - Li, Xuelin AU - Li X AD - College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. FAU - Lyu, Jiejie AU - Lyu J AD - College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. FAU - Li, Fuchun AU - Li F AD - College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: fchli@njau.edu.cn. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200901 PL - United States TA - J Struct Biol JT - Journal of structural biology JID - 9011206 RN - 0 (Carbonates) RN - H0G9379FGK (Calcium Carbonate) SB - IM MH - Arthrobacter/*chemistry MH - Biomineralization/*physiology MH - Calcium Carbonate/chemistry MH - Carbonates/*chemistry MH - Chemical Precipitation MH - Crystallization/methods MH - Extracellular Polymeric Substance Matrix/chemistry OTO - NOTNLM OT - Aragonite OT - Bacteria OT - MICP OT - Mechanism OT - Mg-calcite OT - Morphology EDAT- 2020/09/04 06:00 MHDA- 2021/10/15 06:00 CRDT- 2020/09/04 06:00 PHST- 2020/07/10 00:00 [received] PHST- 2020/08/11 00:00 [revised] PHST- 2020/08/26 00:00 [accepted] PHST- 2020/09/04 06:00 [pubmed] PHST- 2021/10/15 06:00 [medline] PHST- 2020/09/04 06:00 [entrez] AID - S1047-8477(20)30182-9 [pii] AID - 10.1016/j.jsb.2020.107609 [doi] PST - ppublish SO - J Struct Biol. 2020 Nov 1;212(2):107609. doi: 10.1016/j.jsb.2020.107609. Epub 2020 Sep 1.