Abstract
Co-cultivation of an autotrophic species with one or more heterotrophic microbes is a strategy for photobiological production of high-value compounds and is relatively underexplored in comparison to cyanobacterial or microalgal monocultures. Long-term stability of such consortia is required for useful collaboration between the partners, and this property can be increased by encapsulation of phototrophic partners within a hydrogel. Encapsulated cyanobacteria have advantages relative to planktonic cultures that may be useful to explore the potential for artificial microbial communities for targeted biomolecule synthesis, such as increased control over population sizes and reduced liquid handling requirements. In this chapter, we describe a method for encapsulation of genetically modified cyanobacterial strain (Synechococcus elongatus PCC 7942, CscB+) into a sodium alginate matrix, and the utilization of these encapsulated cells to construct stable, artificial autotroph/heterotroph co-cultures. This method has applications for the study of phototroph-based synthetic microbial consortia, and multi-species photobiological production.
Published Version
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