Archaea as 'flexitarians': Ammonia-oxidizing microbes also feed on amino acids
Symbiotic ammonia-oxidizing archaea in marine sponges are not strict specialists but true "flexitarians." A team led by microbiologists Bettina Glasl and Katharina Kitzinger from the University of Vienna, in collaboration with partners from Australia, has shown that, unlike their
The discovery that certain archaea, specifically ammonia-oxidizing microbes found in marine sponges, can switch between different food sources is significant. These microbes, often thought of as specialists that solely rely on ammonia for energy, have been shown to also feed on amino acids. This flexibility in their diet, earning them the label of "flexitarians," challenges the traditional view of their metabolic capabilities.
This finding has implications for our understanding of microbial ecology and the complex interactions within symbiotic relationships. Marine sponges, for instance, rely heavily on their microbial symbionts for nutrient cycling and energy production. The ability of these archaea to adapt their diet could provide a survival advantage, especially in environments where resources may be limited or variable. It also underscores the complexity and adaptability of microbial metabolism, which is crucial for biogeochemical cycles.
As researchers continue to explore the metabolic versatility of microbes, it's essential to watch how these findings influence our broader understanding of ecosystem dynamics and microbial interactions. Future studies should investigate the prevalence of such dietary flexibility across different microbial groups and environments. Additionally, understanding the mechanisms that allow these archaea to switch between ammonia and amino acids could provide insights into how microbes adapt to changing conditions, with potential applications in biotechnology and environmental management.
Originally reported by phys.org. StudentNews adds analysis for science & discovery readers.