Characterization of a newly isolated freshwater Eustigmatophyte alga capable of utilizing far-red light as its sole light source

Oxygenic phototrophs typically utilize visible light (400–700 nm) to drive photosynthesis. However, a large fraction of the energy in sunlight is contained in the far-red region, which encompasses light beyond 700 nm. In nature, certain niche environments contain high levels of this far-red light du...

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Bibliographic Details
Published in:Photosynthesis research 2018-03, Vol.135 (1-3), p.177-189
Main Authors: Wolf, Benjamin M., Niedzwiedzki, Dariusz M., Magdaong, Nikki Cecil M., Roth, Robyn, Goodenough, Ursula, Blankenship, Robert E.
Format: Article
Language:English
Subjects:
Antennas (Electronics)
Biochemistry
Biomedical and Life Sciences
Chlorophyll
Chromatography, High Pressure Liquid
Electrophoresis, Gel, Two-Dimensional
Fresh Water
Life Sciences
Light
Multiprotein Complexes - isolation & purification
Original Article
Photosynthesis
Phylogeny
Pigments, Biological - metabolism
Plant biochemistry
Plant Genetics and Genomics
Plant Physiology
Plant Proteins - isolation & purification
Plant Sciences
Plants - radiation effects
Plants - ultrastructure
solar (fuels), photosynthesis (natural and artificial), biofuels (including algae and biomass), bio-inspired, charge transport, membrane, synthesis (novel materials), synthesis (self-assembly)
Spectrometry, Fluorescence
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Summary:Oxygenic phototrophs typically utilize visible light (400–700 nm) to drive photosynthesis. However, a large fraction of the energy in sunlight is contained in the far-red region, which encompasses light beyond 700 nm. In nature, certain niche environments contain high levels of this far-red light due to filtering by other phototrophs, and in these environments, organisms with photosynthetic antenna systems adapted to absorbing far-red light are able to thrive. We used selective far-red light conditions to isolate such organisms in environmental samples. One cultured organism, the Eustigmatophyte alga Forest Park Isolate 5 (FP5), is able to absorb far-red light using a chlorophyll (Chl) a- containing antenna complex, and is able to grow under solely far-red light. Here we characterize the antenna system from this organism, which is able to shift the absorption of Chl a to >705 nm.
ISSN:0166-8595
1573-5079
DOI:10.1007/s11120-017-0401-z