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Schroedl P, Silverstein M, DiGregorio D, Blättler CL, Loyd S, Bradbury HJ, Edwards RL, Marlow J. Carbonate chimneys at the highly productive point Dume methane seep: Fine-scale mineralogical, geochemical, and microbiological heterogeneity reflects dynamic and long-lived methane-metabolizing habitats. GEOBIOLOGY 2024; 22:e12608. [PMID: 38946067 DOI: 10.1111/gbi.12608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 05/24/2024] [Accepted: 06/12/2024] [Indexed: 07/02/2024]
Abstract
Methane is a potent greenhouse gas that enters the marine system in large quantities at seafloor methane seeps. At a newly discovered seep site off the coast of Point Dume, CA, ~ meter-scale carbonate chimneys host microbial communities that exhibit the highest methane-oxidizing potential recorded to date. Here, we provide a detailed assessment of chimney geobiology through correlative mineralogical, geochemical, and microbiological studies of seven chimney samples in order to clarify the longevity and heterogeneity of these highly productive systems. U-Th dating indicated that a methane-driven carbonate precipitating system at Point Dume has existed for ~20 Kyr, while millimeter-scale variations in carbon and calcium isotopic values, elemental abundances, and carbonate polymorphs revealed changes in carbon source, precipitation rates, and diagenetic processes throughout the chimneys' lifespan. Microbial community analyses revealed diverse modern communities with prominent anaerobic methanotrophs, sulfate-reducing bacteria, and Anaerolineaceae; communities were more similar within a given chimney wall transect than in similar horizons of distinct structures. The chimneys represent long-lived repositories of methane-oxidizing communities and provide a window into how carbon can be transformed, sequestered, and altered over millennia at the Point Dume methane seep.
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Affiliation(s)
- Peter Schroedl
- Department of Biology, Boston University, Boston, Massachusetts, USA
| | | | - Daisy DiGregorio
- Department of Biology, Boston University, Boston, Massachusetts, USA
| | - Clara L Blättler
- Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois, USA
| | - Sean Loyd
- Department of Geological Sciences, California State University Fullerton, Fullerton, California, USA
| | - Harold J Bradbury
- Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - R Lawrence Edwards
- Department of Earth and Environmental Science, University of Minnesota, Minneapolis, Minnesota, USA
| | - Jeffrey Marlow
- Department of Biology, Boston University, Boston, Massachusetts, USA
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Glazov IE, Krut’ko VK, Safronova TV, Sazhnev NA, Kil’deeva NR, Vlasov RA, Musskaya ON, Kulak AI. Formation of Hydroxyapatite-Based Hybrid Materials in the Presence of Platelet-Poor Plasma Additive. Biomimetics (Basel) 2023; 8:297. [PMID: 37504185 PMCID: PMC10807031 DOI: 10.3390/biomimetics8030297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Biomaterials based on hydroxyapatite with controllable composition and properties are promising in the field of regenerative bone replacement. One approach to regulate the phase composition of the materials is the introduction of biopolymer-based additives into the synthesis process. The purpose of present study was to investigate the formation of hydroxyapatite-based hybrid materials in the presence of 6-24% platelet-poor plasma (PPP) additive, at a [Ca2+]/[PO43-] ratio of 1.67, pH 11, and varying maturing time from 4 to 9 days. The mineral component of the materials comprised 53% hydroxyapatite/47% amorphous calcium phosphate after 4 days of maturation and 100% hydroxyapatite after 9 days of maturation. Varying the PPP content between 6% and 24% brought about the formation of materials with rather defined contents of amorphous calcium phosphate and biopolymer component and the desired morphology, ranging from typical apatitic conglomerates to hybrid apatite-biopolymer fibers. The co-precipitated hybrid materials based on hydroxyapatite, amorphous calcium phosphate, and PPP additive exhibited increased solubility in SBF solution, which defines their applicability for repairing rhinoplastic defects.
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Affiliation(s)
- Ilya E. Glazov
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Surganova Str., 9/1, 220012 Minsk, Belarus; (V.K.K.); (O.N.M.); (A.I.K.)
| | - Valentina K. Krut’ko
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Surganova Str., 9/1, 220012 Minsk, Belarus; (V.K.K.); (O.N.M.); (A.I.K.)
| | - Tatiana V. Safronova
- Department of Chemistry, Lomonosov Moscow State University, Building, 3, Leninskie Gory, 1, 119991 Moscow, Russia;
- Department of Materials Science, Lomonosov Moscow State University, Building, 73, Leninskie Gory, 1, 119991 Moscow, Russia
| | - Nikita A. Sazhnev
- Department of Chemistry and Technology of Polymer Materials and Nanocomposites, Kosygin Russian State University, Malaya Kaluzhskaya, 1, 119071 Moscow, Russia; (N.A.S.); (N.R.K.)
| | - Natalia R. Kil’deeva
- Department of Chemistry and Technology of Polymer Materials and Nanocomposites, Kosygin Russian State University, Malaya Kaluzhskaya, 1, 119071 Moscow, Russia; (N.A.S.); (N.R.K.)
| | - Roman A. Vlasov
- Medical Center “Lode”, Gikalo Str., 1, 220005 Minsk, Belarus;
| | - Olga N. Musskaya
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Surganova Str., 9/1, 220012 Minsk, Belarus; (V.K.K.); (O.N.M.); (A.I.K.)
| | - Anatoly I. Kulak
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Surganova Str., 9/1, 220012 Minsk, Belarus; (V.K.K.); (O.N.M.); (A.I.K.)
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Glazov IE, Krut’ko VK, Musskaya ON, Kulak AI. Stabilization of the amorphous state of calcium carbonate-phosphates with phosphate ions. DOKLADY OF THE NATIONAL ACADEMY OF SCIENCES OF BELARUS 2022. [DOI: 10.29235/1561-8323-2022-66-5-501-508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Amorphous calcium carbonate-phosphate with a Ca/P ratio of 1.83 was precipitated from Ca2+, Ca2+, PO3–4, CO2-3 − containing solutions at pH 10 and stabilized by ethanol dehydration and followed by heating at 400 °C. The presence of PO3–4 ions in the structure of amorphous calcium carbonate-phosphate provides its increased resistance to transformation into crystalline phases. Aging in a Ca2+, PO3–4 , CO2-3 − containing mother solution at pH 10 for 4 days promotes the transformation of amorphous calcium carbonate-phosphate into amorphous calcium carbonate-phosphate / carbonated hydroxyapatite / calcite. The combined effect of PO3–4 и CO2-3 − ions in the aquatic environment on the crystallization of amorphous calcium carbonate-phosphate into carbonated hydroxyapatite contributes to a maximum stabilization of the amorphous state that provides a high extent of bioactivity.
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Affiliation(s)
- I. E. Glazov
- Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
| | - V. K. Krut’ko
- Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
| | - O. N. Musskaya
- Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
| | - A. I. Kulak
- Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
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