Consortia of cyanobacteria/microalgae and bacteria: biotechnological potential |
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Authors: | Subashchandrabose Suresh R Ramakrishnan Balasubramanian Megharaj Mallavarapu Venkateswarlu Kadiyala Naidu Ravi |
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Institution: | aCentre for Environmental Risk Assessment and Remediation, University of South Australia, SA 5095, Australia;bCooperative Research Centre for Contamination Assessment and Remediation of Environment, PO Box 486 Salisbury South, SA 5106, Australia;cDivision of Microbiology, Indian Agricultural Research Institute, New Delhi 110012, India;dDepartment of Microbiology, Sri Krishnadevaraya University, Anantapur 515055, India |
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Abstract: | Microbial metabolites are of huge biotechnological potential and their production can be coupled with detoxification of environmental pollutants and wastewater treatment mediated by the versatile microorganisms. The consortia of cyanobacteria/microalgae and bacteria can be efficient in detoxification of organic and inorganic pollutants, and removal of nutrients from wastewaters, compared to the individual microorganisms. Cyanobacterial/algal photosynthesis provides oxygen, a key electron acceptor to the pollutant-degrading heterotrophic bacteria. In turn, bacteria support photoautotrophic growth of the partners by providing carbon dioxide and other stimulatory means. Competition for resources and cooperation for pollutant abatement between these two guilds of microorganisms will determine the success of consortium engineering while harnessing the biotechnological potential of the partners. Relative to the introduction of gene(s) in a single organism wherein the genes depend on the regulatory- and metabolic network for proper expression, microbial consortium engineering is easier and achievable. The currently available biotechnological tools such as metabolic profiling and functional genomics can aid in the consortium engineering. The present review examines the current status of research on the consortia, and emphasizes the construction of consortia with desired partners to serve a dual mission of pollutant removal and commercial production of microbial metabolites. |
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Keywords: | Consortia Cyanobacteria/microalgae Bacteria Pollutant removal Organic pollutants Metals Nutrient removal |
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