Cited by 58Spectroscopy Techniques in Biomedical and Chemical ResearchAquatic Ecosystems and Phytoplankton DynamicsSpectroscopy and Chemometric Analyses

Resolution of codominant phytoplankton species in a eutrophic lake using synchrotron-based Fourier transform infrared spectroscopy

Dean, A. P., Martin, M. C., Sigee, D. C.·2007·Phycologia

Abstract

A.P. DEAN, M.C. MARTIN AND D.C. SIGEE. 2007. Resolution of codominant phytoplankton species in a eutrophic lake using synchrotron-based Fourier transform infrared spectroscopy. Phycologia 46: 000–000. Synchrotron-based Fourier-transform infrared (FTIR) microspectroscopy was used to distinguish micropopulations of the codominant algae Microcystis aeruginosa (Cyanophyceae) and Ceratium hirundinella (Dinophyceae) in mixed phytoplankton samples taken from the water column of a stratified eutrophic lake (Rostherne Mere, UK). FTIR spectra of the two algae showed a closely similar sequence of 10 bands over the wave-number range 4000–900 cm �1. These were assigned to a range of vibrationally active chemical groups using published band assignments and on the basis of correlation and factor analysis. In both algae, intracellular concentrations of macromolecular components (determined as band intensity) varied considerably within the same population, indicating substantial intraspecific heterogeneity. Interspecific differences were separately analysed in relation to discrete bands and by multivariate analysis of the entire spectral region 1750–900 cm �1. In terms of discrete bands, comparison of individual intensities (normalised to amide 1) demonstrated significant (99% probability level) differences in relation to six bands between the two algal species. Key interspecific differences were also noted in relation to the positions of bands 2, 10 (carbohydrate) and 7 (protein) and in the 3-D plots derived by principal component analysis (PCA) of the sequence of band intensities. PCA of entire spectral regions showed clear resolution of species in the PCA plot, with indication of separation on the basis of protein (region 1700–1500 cm �1) and carbohydrate

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Authors
Dean, A. P., Martin, M. C., & Sigee, D. C.
Venue
Phycologia
Published
2007-02
Volume
46
Issue
2
Pages
151-159
ISSN
0031-8884 (ISSN-L)
OpenAlex
W2136780817
Cited by
58
References
25
Citations by year
2026: 2 · 2025: 6 · 2024: 4 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 6 · 2019: 4 · 2017: 2 · 2016: 1 · 2015: 7 · 2014: 2 · 2013: 2 · 2012: 3
FWCI
1.55
Type
journal article
Language
en
Open access
closed
Locations
  • Phycologia (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
Keywords
Microcystis aeruginosa, Ceratium hirundinella, species discrimination, FTIR microspectroscopy, synchrotron infrared spectroscopy, eutrophic lakes, macromolecular composition, protein and carbohydrate content, band assignment

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