Cited by 302Spectroscopy Techniques in Biomedical and Chemical ResearchSpectroscopy and Chemometric AnalysesMarine and coastal ecosystems

FOURIER TRANSFORM INFRARED SPECTROSCOPY AS A NOVEL TOOL TO INVESTIGATE CHANGES IN INTRACELLULAR MACROMOLECULAR POOLS IN THE MARINE MICROALGA CHAETOCEROS MUELLERII (BACILLARIOPHYCEAE)

Giordano, Mario, Kansiz, Mustafa, Heraud, Philip, Beardall, John, Wood, Bayden, McNaughton, Don·2001·Journal of Phycology

Abstract

Fourier Transform Infrared (FT‐IR) spectroscopy was used to study carbon allocation patterns in response to changes in nitrogen availability in the diatom Chaetoceros muellerii Lemmerman. The results of the FT‐IR measurements were compared with those obtained with traditional chemical methods. The data obtained with both FT‐IR and chemical methods showed that nitrogen starvation led to the disappearance of the differences in cell constituents and growth rates existing between cells cultured at either high [NO 3 − ] or high [NH 4 + ]. Irrespective of the nitrogen source supplied before nitrogen starvation, a diversion of carbon away from protein, chlorophyll, and carbohydrates into lipids was observed. Under these conditions, cells that had previously received nitrogen as nitrate appeared to allocate a larger amount of mobilized carbon into lipids than cells that had been cultured in the presence of ammonia. All these changes were reversed by resupplying the cultures with nitrogen. The rate of protein accumulation in the N‐replete cells was slower than the rate of decrease under nitrogen starvation. This study demonstrates that the relative proportions of the major macromolecules contained in microalgal cells and their changes in response to external stimuli can be determined rapidly, simultaneously, and inexpensively using FT‐IR. The technique proved to be equally reliable to and less labor intensive than more traditional chemical methods.

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Crossref · 10.1046/j.1529-8817.2001.037002271.x

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Authors
Giordano, M., Kansiz, M., Heraud, P., Beardall, J., Wood, B., & McNaughton, D.
Affiliations
Monash University (AU)
Corresponding author
Giordano, Mario
Venue
Journal of Phycology
Publisher
Wiley
Published
2001-04-18
Volume
37
Issue
2
Pages
271-279
ISSN
  • 0022-3646 (ISSN-L)
  • 1529-8817
OpenAlex
W2104207789
Cited by
301
References
26
Citations by year
2026: 5 · 2025: 10 · 2024: 17 · 2023: 6 · 2022: 17 · 2021: 22 · 2020: 21 · 2019: 27 · 2018: 11 · 2017: 25 · 2016: 15 · 2015: 20 · 2014: 12 · 2013: 21 · 2012: 14
FWCI
2.61
Type
journal article
Language
en
Open access
closed
Locations
Journal of Phycology (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
Keywords
diatoms, carbon allocation, nitrogen starvation, nitrogen source, nitrate, ammonium, lipid accumulation, macromolecular composition, protein accumulation, chlorophyll, carbohydrates, FTIR spectroscopy, microalgae growth

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