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Carboxysomes: The next frontier in biotechnology and sustainable solutions.
Biotechnol Adv
December 2024
Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Makkah 23955, Saudi Arabia. Electronic address:
Some bacteria possess microcompartments that function as protein-based organelles. Bacterial microcompartments (BMCs) sequester enzymes to optimize metabolic reactions. Several BMCs have been characterized to date, including carboxysomes and metabolosomes.
View Article and Find Full Text PDFExtreme abiotics drive sediment biocomplexity along pH gradients in a shallow submarine volcanic vent.
Mar Pollut Bull
December 2024
Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123 Palermo, Italy; National Biodiversity Future Center (NBFC), Piazza Marina 61, 90133 Palermo, Italy; CoNISMa, National Interuniversity Consortium for Marine Sciences, Piazzale Flaminio 9, 00196 Roma, Italy.
Volcanic emissions in shallow vents influence the biogeochemistry of the sedimentary compartment, creating marked abiotic gradients. We assessed the spatial dynamics of the sediment compartment, as for the composition and origin of organic matter and associated prokaryotic community, in a volcanic shallow CO vent (Vulcano Island, Italy). Based on elemental (carbon, nitrogen content and their ratio) and isotopic composition (δC, δN and δS), the contribution of vent-derived organic matter (microbial mats) to sedimentary organic matter was high close to the vent, while the marine-derived end-members (seagrasses) contributed highly at increasing distance.
View Article and Find Full Text PDFProduction of Novel Energy Gases in Bioprocesses Using Undefined Mixed Cultures.
Adv Biochem Eng Biotechnol
December 2024
Savonia University of Applied Sciences, Kuopio, Finland.
Three phases of matter intermingle in various environments. The phenomena behind these fluctuations provide microbial cultures with beneficial interphase on the borderlines. Correspondingly, a bioreactor broth usually consists of a liquid phase but also contains solid particles, gas bubbles, technical surfaces, and other niches, both on a visible scale and microscopically.
View Article and Find Full Text PDFIntimate microbe-water-mineral interactions mediate alkalization in the pyroxene-rich iron ore mines in Panxi area, Southwest China.
J Hazard Mater
December 2024
School of Environmental Studies, China University of Geosciences, Wuhan, China; State Key Laboratory of Biogeology and Environmental Geology, Wuhan, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, Ministry of Ecology and Environment, Wuhan, China.
Article Synopsis
- The study focuses on the under-explored microbial interactions and (bio)geochemical processes in alkaline mine environments, specifically in iron mines located in the Panxi mining area of Southwest China.
- Compared to less impacted river samples, the iron ore samples revealed higher levels of various minerals and elements, indicating significant changes in water chemistry due to mining activity, with particular emphasis on sulfate concentrations.
- The research identified specific microbial communities, mainly Serpentinimonas spp. and Thiobacillus spp., that thrive in high pH conditions, suggesting that these microbes play important roles in the evolution of these alkaline mine ecosystems and might help in strategies for mine restoration.
Chemolithoautotrophic bacteria flourish at dark water-ice interfaces of an emerged Arctic cold seep.
ISME J
January 2024
LIENSs Littoral Environnement et Sociétés, UMRi 7266 CNRS-La Rochelle Université, La Rochelle, 17000, France.
Below their ice shells, icy moons may offer a source of chemical energy that could support microbial life in the absence of light. In the Arctic, past and present glacial retreat leads to isostatic uplift of sediments through which cold and methane-saturated groundwater travels. This fluid reaches the surface and freezes as hill-shaped icings during winter, producing dark ice-water interfaces above water ponds containing chemical energy sources.
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