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Transformation of chlorophyll a during viral infection of Emiliania huxleyi / Carole, Llewellyn

Aquat Microb Ecol, Volume: 69, Pages: 205 - 210

Swansea University Author: Carole, Llewellyn

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DOI (Published version): 10.3354/ame01640

Abstract

Although viruses can significantly reduce primary production-mediated carbon cycling, the effect of viral infection on the principal photosynthetic pigment that enables autotrophic production, chlorophyll a (chl a), remains unresolved. We compared the production of chl a transformation compounds in...

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Published in: Aquat Microb Ecol
Published: 2013
Online Access: https://www.int-res.com/articles/ame2012/69/a069p205.pdf
URI: https://cronfa.swan.ac.uk/Record/cronfa44845
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Abstract: Although viruses can significantly reduce primary production-mediated carbon cycling, the effect of viral infection on the principal photosynthetic pigment that enables autotrophic production, chlorophyll a (chl a), remains unresolved. We compared the production of chl a transformation compounds in Emiliania huxleyi cultures undergoing viral infection with that in control cultures left to decline in the stationary phase of growth. A high performance liquid chromatography mass spectrometry method developed for the detection of Type I chl a transformation products was used. A rapid decline in cellular concentrations of chl a, C-132 diastereomer of chl a (chl a’) and phaeophytin a (phytin a) was observed in both infected and control cultures. The most notable finding was the significant increase in the cellular concentrations of Type I chl oxidation products (allomers) in the infected cultures, and we hypothesise that this may be due to increased oxidative stress and reactive oxygen species.
Keywords: Viral infection · Emiliania huxleyi · Chlorophyll a · Transformation products · Oxidative transformation
College: College of Science
Start Page: 205
End Page: 210