Resuscitation of anammox bacteria after >10,000 years of dormancy
MetadataShow full item record
© 2018, International Society for Microbial Ecology. Water is essential for life on Earth, and an important medium for microbial energy and metabolism. Dormancy is a state of low metabolic activity upon unfavorable conditions. Many microorganisms can switch to a metabolically inactive state after water shortage, and recover once the environmental conditions become favorable again. Here, we resuscitated dormant anammox bacteria from dry terrestrial ecosystems after a resting period of >10 ka by addition of water without any other substrates. Isotopic-tracer analysis showed that water induced nitrate reduction yielding sufficient nitrite as substrate and energy for activating anammox bacteria. Subsequently, dissimilatory nitrate reduction to ammonium (DNRA) provided the substrate ammonium for anammox bacteria. The ammonium and nitrite formed were used to produce dinitrogen gas. High throughput sequencing and network analysis identified Brocadia as the dominant anammox species and a Jettenia species seemed to connect the other community members. Under global climate change, increasing precipitation and soil moisture may revive dormant anammox bacteria in arid soils and thereby impact global nitrogen and carbon cycles.
Showing items related by title, author, creator and subject.
Investigation of the impact of nitrate injection to control sourcing problem in oil reservoir : benefit and side effects on steel materialsHalim, Amalia Yunita (2011)The successful control of reservoir souring by nitrate injection has been well documented in the literature. Recent interest has centred on how nitrate application can increase the corrosion risk in pipelines and metal ...
Managing the potential risks of using bacteria-laden water in mineral processing to protect freshwaterLiu, W.; Moran, Chris; Vink, S. (2013)The minerals industry is being driven to access multiple water sources and increase water reuse to minimize freshwater withdrawal. Bacteria-laden water, such as treated effluent, has been increasingly used as an alternative ...
Diversity and antibacterial activity of bacteria isolated from the coastal marine sponges Amphilectus fucorum and Eurypon majorMargassery, L.; Kennedy, J.; O'Gara, Fergal; Dobson, A.; Morrissey, J. (2012)Aims: To assess the diversity and antimicrobial activity of culturable bacteria associated with two temperate-water marine sponges, Amphilectus fucorum and Eurypon major. Methods and Results: Sponge samples were collected ...