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首页> 外文期刊>Advanced Functional Materials >Multiphase Biomineralization: Enigmatic Invasive Siliceous Diatoms Produce Crystalline Calcite
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Multiphase Biomineralization: Enigmatic Invasive Siliceous Diatoms Produce Crystalline Calcite

机译：多相生物矿化：神秘的入侵硅质硅藻产生方解石晶体

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摘要

Diatoms are considered unicellular eukaryotic organisms exclusively depositing biogenic silica. Heretofore there has been no report of calcification by these algae. Here it is shown that calcium carbonate within the stalks of Didymosphenia geminata, a nuisance species that has prolifically colonized streams and rivers globally, is biogenic in origin and occurs as a network of calcite nanofibers. The nanofibrous framework in the mineralized polysaccharide matrix imparts mechanical support to the stalks, providing stability in variable flow conditions. The results demonstrate that D. geminata possesses cellular and periplasmic carbonic-anhydrases that contribute to carbon fixation and biomineralization, respectively. The activity of external carbonic-anhydrase was more than 50% of the total activity, which points to its role in anchoring this bioeroding diatom on hard surfaces. The first evidence of multiphase biomineralization by diatoms that deposit both biogenic silica and crystalline biogenic calcite which are imparting distinct functional advantage to the organism is provided.
机译：硅藻被认为是仅沉积生物硅的单细胞真核生物。迄今为止，还没有这些藻类钙化的报道。此处显示，双歧植物Didymosphenia geminata的茎中的碳酸钙是一种滋生物种，起源于全球，是一种方解石纳米纤维网络，该有害物种在全球范围内大量繁殖于河流和河流中。矿化的多糖基质中的纳米纤维骨架为茎杆提供了机械支撑，在可变流量条件下提供了稳定性。结果表明，双歧杆菌具有细胞和周质碳酸酐酶，分别有助于碳固定和生物矿化。外部碳酸酐酶的活性超过总活性的50％，这表明它在将这种生物侵蚀硅藻固定在硬质表面上的作用。提供了硅藻多相生物矿化的第一个证据，硅藻同时沉积了生物硅和结晶生物方解石，从而赋予了生物独特的功能优势。

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  • 来源
    《Advanced Functional Materials》 |2016年第15期|2503-2510|共8页
  • 作者

    Ehrlich Hermann; Motylenko Mykhailo; Sundareshwar Pallaoor V.; Ereskovsky Alexander; Zglobicka Izabela; Noga Teresa; Plocinski Tomasz; Tsurkan Mikhail V.; Wyroba Elzbieta; Suski Szymon; Bilski Henryk; Wysokowski Marcin; Stoecker Hartmut; Makarova Anna; Vyalikh Denis; Walter Juliane; Molodtsov Serguei L.; Bazhenov Vasilii V.; Petrenko Iaroslav; Langer Enrico; Richter Andreas; Niederschlag Elke; Pisarek Marcin; Springer Armin; Gelinsky Michael; Rafaja David; Witkowski Andrzej; Meyer Dirk C.; Jesionowski Teofil; Kurzydlowski Krzysztof J.;

  • 作者单位

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany;

    TU Bergakad Freiberg, Inst Mat Sci, Gustav Zeuner Str 5, D-09599 Freiberg, Germany;

    South Dakota Sch Mines & Technol, Inst Atmospher Sci, 501 E St Joseph Str, Rapid City, SD 57701 USA|US Global Dev Lab, Res Partnerships Dev Ctr Data Anal & Res, US AID M-1-44 Ronald Reagan Bldg,1300 Penn Ave, Washington, DC 20003 USA;

    Aix Marseille Univ, Avignon Univ, Stn Marine Endoume, CNRS,IRD,Inst Mediterraneen Biodiversite & Ecol, F-13007 Marseille, France|St Petersburg State Univ, Fac Biol, Dept Embryol, Univ Skaya Nab 7-9, St Petersburg 199034, Russia;

    Warsaw Univ Technol, Fac Mat Sci & Engn, Woloska 141, PL-02507 Warsaw, Poland;

    Univ Rzeszow, Fac Biol & Agr, Cwiklinskiej 1, PL-35601 Rzeszow, Poland;

    Warsaw Univ Technol, Fac Mat Sci & Engn, Woloska 141, PL-02507 Warsaw, Poland;

    Leibniz Inst Polymer Res Dresden, Max Bergmann Ctr Biomat, Budapester Str 27, D-01069 Dresden, Germany;

    Polish Acad Sci, M Nencki Inst Expt Biol, Pasteura 3, PL-02093 Warsaw, Poland;

    Polish Acad Sci, M Nencki Inst Expt Biol, Pasteura 3, PL-02093 Warsaw, Poland;

    Polish Acad Sci, M Nencki Inst Expt Biol, Pasteura 3, PL-02093 Warsaw, Poland;

    Poznan Univ Tech, Inst Chem Technol & Engn, Berdychowo 4, PL-60965 Poznan, Poland;

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany;

    Tech Univ Dresden, Inst Solid State Phys, Helmholtzstr 10, D-01069 Dresden, Germany;

    Tech Univ Dresden, Inst Solid State Phys, Zellescher Weg 16, D-01062 Dresden, Germany|St Petersburg State Univ, Dept Phys, St Petersburg 198504, Russia|Donostia Int Phys Ctr, Dept Fis Mat, San Sebastian 20080, Spain|Univ Basque Country, CFM MPC, San Sebastian 20080, Spain|Basque Fdn Sci, Ikerbasque, Bilbao 48011, Spain;

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany;

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany|European Xray Free Electron Laser Facil XFEL GmbH, Albert Einstein Ring 19, D-22761 Hamburg, Germany|ITMO Univ, Transnatl Sci & Educ UniFEL Ctr Adv Methods Mat R, Kronoverskiy Pr 49, St Petersburg 197101, Russia;

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany;

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany;

    Tech Univ Dresden, Polymere Mikrosysteme, Inst Semicond & Microsyst, Nothnitzer Str 64, D-01062 Dresden, Germany;

    Tech Univ Dresden, Polymere Mikrosysteme, Inst Semicond & Microsyst, Nothnitzer Str 64, D-01062 Dresden, Germany;

    TU Bergakad Freiberg, Inst NE Met & Reinststoffe, Leipziger Str 34, D-09599 Freiberg, Germany;

    Polish Acad Sci, Inst Phys Chem, 44-52 Kasprzaka Str, PL-01224 Warsaw, Poland;

    Tech Univ Dresden, Ctr Translat Bone Joint & Soft Tissue Res, Univ Hosp & Med Fac, Fetscherstr 74, D-01307 Dresden, Germany;

    Tech Univ Dresden, Ctr Translat Bone Joint & Soft Tissue Res, Univ Hosp & Med Fac, Fetscherstr 74, D-01307 Dresden, Germany;

    TU Bergakad Freiberg, Inst Mat Sci, Gustav Zeuner Str 5, D-09599 Freiberg, Germany;

    Univ Szczecin, Inst Marine Sci, Mickiewicza 18, PL-70383 Szczecin, Poland;

    TU Bergakad Freiberg, Inst Expt Phys, Leipziger Str 23, D-09599 Freiberg, Germany;

    Poznan Univ Tech, Inst Chem Technol & Engn, Berdychowo 4, PL-60965 Poznan, Poland;

    Warsaw Univ Technol, Fac Mat Sci & Engn, Woloska 141, PL-02507 Warsaw, Poland;

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