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Pigment composition and adaptation in free-living and symbiotic strains of Acaryochloris marina

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Chan, Yi-Wah, Nenninger, Anja, Clokie, Samuel J. H., Mann, Nicholas H., Scanlan, David J. , Whitworth, Anna L. and Clokie, Martha R. J.. (2007) Pigment composition and adaptation in free-living and symbiotic strains of Acaryochloris marina. FEMS Microbiology Ecology, Vol.61 (No.1). pp. 65-73. ISSN 0168-6496

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Official URL: http://dx.doi.org/10.1111/j.1574-6941.2007.00320.x

Abstract

Acaryochloris marina strains have been isolated from several varied locations and habitats worldwide demonstrating a diverse and dynamic ecology. In this study, the whole cell photophysiologies of strain MBIC11017, originally isolated from a colonial ascidian, and the free-living epilithic strain CCMEE5410 are analyzed by absorbance and fluorescence spectroscopy, laser scanning confocal microscopy, sodium dodecyl sulfate polyacrylamide gel electrophoresis and subsequent protein analysis. We demonstrate pigment adaptation in MBIC11017 and CCMEE5410 under different light regimes. We show that the higher the incident growth light intensity for both strains, the greater the decrease in their chlorophyll d content. However, the strain MBIC11017 loses its phycobiliproteins relative to its chlorophyll d content when grown at light intensities of 40 mu E m(-2) s(-1) without shaking and 100 mu E m(-2) s(-1) with shaking. We also conclude that phycobiliproteins are absent in the free-living strain CCMEE5410.

Item Type:

Journal Article

Subjects:

Q Science > QR Microbiology

Divisions:

Faculty of Science > Life Sciences (2010- ) > Biological Sciences ( -2010)
Faculty of Science > Chemistry
Faculty of Science > Molecular Organisation and Assembly in Cells (MOAC)

Journal or Publication Title:

FEMS Microbiology Ecology

Publisher:

Wiley-Blackwell Publishing Ltd.

ISSN:

0168-6496