mngomalungelo443
Mangrove ecosystems are one of the most ecologically significant environments on Earth. They are coastal wetlands found in tropical and subtropical regions, where salt-tolerant trees thrive in intertidal zones. Mangroves serve as a buffer between land and sea, protecting shorelines from erosion, absorbing storm surges, and acting as carbon sinks. These ecosystems also support diverse microbial communities that drive essential biochemical cycles, including the carbon, nitrogen, and sulfur cycles.
Scientific Classification:
Domain: Bacteria
Phylum: Proteobacteria
Class: Deltaproteobacteria
Order: Desulfovibrionales
Family: Desulfovibrionaceae
Genus: Desulfovibrio
Species: Desulfovibrio desulfuricans
Desulfovibrio desulfuricans is a sulfate-reducing bacterium (SRB) in mangrove sediments that uses sulfate as an electron acceptor, producing hydrogen sulfide (H₂S). It contributes to nutrient cycling, bioremediation of heavy metals, and symbiotic relationships. However, excessive H₂S can be toxic, and the bacterium causes microbial-induced corrosion in pipelines and ships. While essential for the sulfur cycle, its effects can be both beneficial and harmful.
Desulfovibrio desulfuricans plays a key role in the sulfur cycle by reducing sulfate to hydrogen sulfide. It aids in bioremediation by precipitating toxic metals as sulfides. However, it also contributes to microbial corrosion in pipelines and oil wells, causing economic losses. Some strains produce hydrogen, with potential for biofuel applications. Its metabolic versatility makes it valuable for bioethanol co-production, biocatalysis, and wastewater treatment.
