Growth of the green algae Chlamydomonas reinhardtii under red and blue lasers |
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Authors: | Sara S. KuwaharaJoel L. Cuello Graham MyhreStanley Pau |
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Affiliation: | a Department of Agricultural and Biosystems Engineering, The University of Arizona, Tucson, AZ 85721, USA b College of Optical Sciences, The University of Arizona, AZ 85721, USA |
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Abstract: | Red and blue lasers, holding promise as an electric light source for photosynthetic systems on account of being true monochromatic, high-power, and having high electrical-conversion efficiency, were employed in growing a green alga, Chlamydomonas reinhardtii. The laser treatments tested included: 655-nm Red; 680-nm Red; 655-nm Red+474-nm Blue and 680-nm Red+474-nm Blue. A white cold cathode lamp with spectral output similar to that of white fluorescent lamp served as control. C. reinhardtii successfully grew and divided under the 655 and 680-nm red lasers as well as under the white-light control. Supplementing either red with blue laser, however, resulted in increased algae cell count that significantly exceeded those under both red lasers and the white-light control on average by 241%. |
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Keywords: | Lasers Algae Chlamydomonas reinhardtii Electric lighting |
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