Regulation of the pigment optical density of an algal cell: filling the gap between photosynthetic productivity in the laboratory and in mass culture

Formighieri, Cinzia; Franck, Fabrice; Bassi, Roberto

doi:10.1016/j.jbiotec.2012.02.021

Article (Scientific journals)

Regulation of the pigment optical density of an algal cell: filling the gap between photosynthetic productivity in the laboratory and in mass culture

Formighieri, Cinzia; Franck, Fabrice; Bassi, Roberto

2012 • In Journal of Biotechnology, 162, p. 115-123

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/114897

DOI
10.1016/j.jbiotec.2012.02.021

PubMed
22426090

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Keywords :

algae; biofuels; antenna size

Abstract :

[en] An increasing number of investors is looking at algae as a viable source of biofuels, beside Q3 cultivation for human/animal feeding or to extract high-value chemicals and pharmaceuticals. However, present biomass productivities are far below theoretical estimations implying that a large part of the available photosynthetically active radiation is not used in photosynthesis. Light utilisation inefficiency and rapid light attenuation within a mass culture due to high pigment optical density of wild type strains have been proposed as major limiting factors reducing solar-to-biomass conversion efficiency. Analysis of growth yields of mutants with reduced light-harvesting antennae and/or reduced overall pigment concentration per cell, generated by either mutagenesis or genetic engineering, could help understanding limiting factors for biomass accumulation in photobioreactor. Meanwhile, studies on photo-acclimation can provide additional information on the average status of algal cells in a photobioreactor to be used in modellingbased predictions. Identifying limiting factors in solar-to-biomass conversion efficiency is the first step for planning strategies of genetic improvement and domestication of algae to finally fill the gap between theoretical and industrial photosynthetic productivity.

Disciplines :

Biotechnology

Author, co-author :

Formighieri, Cinzia ^✱; University of Verona

Franck, Fabrice ^✱; Université de Liège - ULiège > Labo de Bioénergétique

Bassi, Roberto; University of Verona

^✱ These authors have contributed equally to this work.

Language :

English

Title :

Regulation of the pigment optical density of an algal cell: filling the gap between photosynthetic productivity in the laboratory and in mass culture

Publication date :

2012

Journal title :

Journal of Biotechnology

ISSN :

0168-1656

eISSN :

1873-4863

Publisher :

Elsevier

Volume :

162

Pages :

115-123

Peer reviewed :

Peer Reviewed verified by ORBi

Name of the research project :

Sunbiopath

Funders :

EU - European Union

Available on ORBi :

since 20 March 2012

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