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Isolation and Proteomic Analysis of a Chlamydomonas reinhardtii Mutant with Enhanced Lipid Production by the Gamma Irradiation Method
Ist Teil von
Journal of microbiology and biotechnology, 2016-12, Vol.26 (12), p.2066-2075
Ort / Verlag
한국미생물생명공학회
Erscheinungsjahr
2016
Quelle
EZB Free E-Journals
Beschreibungen/Notizen
In this study, an enhanced lipid-producing mutant strain of the microalga Chlamydomonas reinhardtii was developed by gamma irradiation. To induce the mutation, C. reinhardtii was gamma irradiated at a dose of 400 Gy. After irradiation, the surviving cells were stained with Nile red. The mutant (Cr-4013) accumulating 20% more lipid than the wild type was selected. Thin-layer chromatography revealed the triglyceride and free fatty acid contents to be markedly increased in Cr-4013. The major fatty acids identified were palmitic acid, oleic acid, linoleic acid, and linolenic acid. Random amplified polymeric DNA analysis showed partial genetic modifications in Cr-4013. To ascertain the changes of protein expression in the mutant strain, two-dimensional electrophoresis was conducted. These results showed that gamma radiation could be used for the development of efficient microalgal strains for lipid production.