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Hall BW, Kontur WS, Neri JC, Gille DM, Noguera DR, Donohue TJ. Production of carotenoids from aromatics and pretreated lignocellulosic biomass by Novosphingobium aromaticivorans. Appl Environ Microbiol 2023; 89:e0126823. [PMID: 38014958 PMCID: PMC10734531 DOI: 10.1128/aem.01268-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/04/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE There is economic and environmental interest in generating commodity chemicals from renewable resources, such as lignocellulosic biomass, that can substitute for chemicals derived from fossil fuels. The bacterium Novosphingobium aromaticivorans is a promising microbial platform for producing commodity chemicals from lignocellulosic biomass because it can produce these from compounds in pretreated lignocellulosic biomass, which many industrial microbial catalysts cannot metabolize. Here, we show that N. aromaticivorans can be engineered to produce several valuable carotenoids. We also show that engineered N. aromaticivorans strains can produce these lipophilic chemicals concurrently with the extracellular commodity chemical 2-pyrone-4,6-dicarboxylic acid when grown in a complex liquor obtained from alkaline pretreated lignocellulosic biomass. Concurrent microbial production of valuable intra- and extracellular products can increase the economic value generated from the conversion of lignocellulosic biomass-derived compounds into commodity chemicals and facilitate the separation of water- and membrane-soluble products.
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Affiliation(s)
- Benjamin W. Hall
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, USA
- Laboratory of Genetics, University of Wisconsin, Madison, Wisconsin, USA
| | - Wayne S. Kontur
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, USA
| | - Jeanette C. Neri
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, USA
| | - Derek M. Gille
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, USA
| | - Daniel R. Noguera
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, USA
- Department of Civil and Environmental Engineering, University of Wisconsin, Madison, Wisconsin, USA
| | - Timothy J. Donohue
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, USA
- Department of Bacteriology, University of Wisconsin, Madison, Wisconsin, USA
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The Porifera microeukaryome: Addressing the neglected associations between sponges and protists. Microbiol Res 2022; 265:127210. [PMID: 36183422 DOI: 10.1016/j.micres.2022.127210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/22/2022]
Abstract
While bacterial and archaeal communities of sponges are intensively studied, given their importance to the animal's physiology as well as sources of several new bioactive molecules, the potential and roles of associated protists remain poorly known. Historically, culture-dependent approaches dominated the investigations of sponge-protist interactions. With the advances in omics techniques, these associations could be visualized at other equally important scales. Of the few existing studies, there is a strong tendency to focus on interactions with photosynthesizing taxa such as dinoflagellates and diatoms, with fewer works dissecting the interactions with other less common groups. In addition, there are bottlenecks and inherent biases in using primer pairs and bioinformatics approaches in the most commonly used metabarcoding studies. Thus, this review addresses the issues underlying this association, using the term "microeukaryome" to refer exclusively to protists associated with an animal host. We aim to highlight the diversity and community composition of protists associated with sponges and place them on the same level as other microorganisms already well studied in this context. Among other shortcomings, it could be observed that the biotechnological potential of the microeukaryome is still largely unexplored, possibly being a valuable source of new pharmacological compounds, enzymes and metabolic processes.
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Zhang K, Adams KJ, Kumar S, Wang ZW, Zheng Y. A novel biological treatment of hydrothermal carbonization wastewater by using Thraustochytrium striatum. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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