NDLI: Iron incorporation in biosilica of the marine diatom Stephanopyxis turris: dispersed or clustered?

Content Provider	Springer Nature Link
Author	Kaden, Janine Brückner, Stephan I. Machill, Susanne Krafft, Christoph Pöppl, Andreas Brunner, Eike
Copyright Year	2017
Abstract	Iron incorporation into diatom biosilica was investigated for the species Stephanopyxis turris. It is known that several “foreign” elements (e.g., germanium, titanium, aluminum, zinc, iron) can be incorporated into the siliceous cell walls of diatoms in addition to silicon dioxide (SiO2). In order to examine the amount and form of iron incorporation, the iron content in the growth medium was varied during cultivation. Fe:Si ratios of isolated cell walls were measured by ICP-OES. SEM studies were performed to examine of a possible influence of excess iron during diatom growth upon cell wall formation. The chemical state of biosilica-attached iron was characterized by a combination of infrared, 29Si MAS NMR, and EPR spectroscopy. For comparison, synthetic silicagels of variable iron content were studied. Our investigations show that iron incorporation in biosilica is limited. More than 95% of biosilica-attached iron is found in the form of iron clusters/nanoparticles. In contrast, iron is preferentially dispersedly incorporated within the silica framework in synthetic silicagels leading to Si–O–Fe bond formation.
Starting Page	71
Ending Page	82
Page Count	12
File Format	PDF
ISSN	09660844
Journal	BioMetals
Volume Number	30
Issue Number	1
e-ISSN	15728773
Language	English
Publisher	Springer Netherlands
Publisher Date	2017-01-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Iron incorporation Biosilica Infrared spectroscopy 29Si MAS NMR EPR Biochemistry Pharmacology/Toxicology Microbiology Cell Biology Plant Physiology Medicine/Public Health
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Biochemistry, Genetics and Molecular Biology Biomaterials Agricultural and Biological Sciences

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Analytical studies on the incorporation of aluminium in the cell walls of the marine diatom Stephanopyxis turris

Characterization of exudates released by the marine diatom Skeletonema costatum exposed to copper stress: a 3D-fluorescence spectroscopy approach

Different iron sources to study the physiology and biochemistry of iron metabolism in marine micro-algae

An EPR, thermostability and pH-dependence study of wild-type and mutant forms of catechol 1,2-dioxygenase from Acinetobacter radioresistens S13

Detection of photoactive siderophore biosynthetic genes in the marine environment

Metallomic EPR spectroscopy

Ferrous iron content of intravenous iron formulations

Asthma as a disruption in iron homeostasis

Iron oxides in human spleen

Iron incorporation in biosilica of the marine diatom Stephanopyxis turris: dispersed or clustered?

Similar Documents

Analytical studies on the incorporation of aluminium in the cell walls of the marine diatom Stephanopyxis turris

Characterization of exudates released by the marine diatom Skeletonema costatum exposed to copper stress: a 3D-fluorescence spectroscopy approach

Different iron sources to study the physiology and biochemistry of iron metabolism in marine micro-algae

An EPR, thermostability and pH-dependence study of wild-type and mutant forms of catechol 1,2-dioxygenase from Acinetobacter radioresistens S13

Detection of photoactive siderophore biosynthetic genes in the marine environment

Metallomic EPR spectroscopy

Ferrous iron content of intravenous iron formulations

Asthma as a disruption in iron homeostasis

Iron oxides in human spleen

Iron incorporation in biosilica of the marine diatom Stephanopyxis turris: dispersed or clustered?