Multiphase Biomineralization: Enigmatic Invasive Siliceous Diatoms Produce Crystalline Calcite
Hermann E Ehrlich
(1)
,
Mykhailo Motylenko
(1)
,
Pallaoor V. Sundareshwar
(2)
,
Alexander Ereskovsky
(3)
,
Izabela Zgłobicka
(4)
,
Teresa Noga
(5)
,
Tomasz Płociński
(4)
,
Mikhail V Tsurkan
(6)
,
Elżbieta Wyroba
(7)
,
Szymon Suski
(7)
,
Henryk H Bilski
(7)
,
Marcin Wysokowski
(7)
,
Hartmut H Stöcker
(1)
,
M A Makarova
(8)
,
Denis Vyalikh
(8)
,
Juliane Walter
(1)
,
Serguei L Molodtsov
(1)
,
Vasilii V Bazhenov
(1)
,
Iaroslav Petrenko
(1)
,
Enrico Langer
(8)
,
Andreas Richter
(9)
,
Elke Niederschlag
(1)
,
Marcin Pisarek
(10)
,
Armin Springer
(8)
,
Michael Gelinsky
(8)
,
David Rafaja
(1)
,
Andrzej Witkowski
(11)
,
Dirk C. Meyer
(12)
,
Teofil Jesionowski
(13)
,
Krzysztof J. Kurzydłowski
(4)
1
TU Bergakademie Freiberg -
Technishe Universität Bergakademie Freiberg
2 ISAC - CNR Institute of Atmospheric Sciences and Climate
3 IMBE - Institut méditerranéen de biodiversité et d'écologie marine et continentale
4 Faculty of Materials Science and Engineering
5 Rzeszow University of Technology
6 Max Bergmann Centre of Biomaterial Dresden
7 Nencki Institute of Experimental Biology
8 TU Dresden - Technische Universität Dresden = Dresden University of Technology
9 IUP - Institute of Environmental Physics [Bremen]
10 Institute of Physical Chemistry
11 lnstitute of Marine Sciences and Coastal Research
12 Institute of Experimental Physics [Freiberg]
13 PUT - Poznan University of Technology
2 ISAC - CNR Institute of Atmospheric Sciences and Climate
3 IMBE - Institut méditerranéen de biodiversité et d'écologie marine et continentale
4 Faculty of Materials Science and Engineering
5 Rzeszow University of Technology
6 Max Bergmann Centre of Biomaterial Dresden
7 Nencki Institute of Experimental Biology
8 TU Dresden - Technische Universität Dresden = Dresden University of Technology
9 IUP - Institute of Environmental Physics [Bremen]
10 Institute of Physical Chemistry
11 lnstitute of Marine Sciences and Coastal Research
12 Institute of Experimental Physics [Freiberg]
13 PUT - Poznan University of Technology
Alexander Ereskovsky
- Fonction : Auteur
- PersonId : 12122
- IdHAL : alexander-ereskovsky
- ORCID : 0000-0003-1079-7204
- IdRef : 150117205
Marcin Wysokowski
- Fonction : Auteur
- PersonId : 791181
- ORCID : 0000-0003-0624-2716
Andreas Richter
- Fonction : Auteur
- PersonId : 756465
- ORCID : 0000-0003-3282-4808
Andrzej Witkowski
- Fonction : Auteur
- PersonId : 759523
- ORCID : 0000-0003-1714-218X
Résumé
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.