Life | |
Freshwater Ammonia-Oxidizing Archaea Retain |
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Elizabeth French1  Annette Bollmann2  Hans-Peter Klenk1  Michael W. W. Adams1  | |
[1] Department of Microbiology, Miami University, 32 Pearson Hall, 700 East High Street, Oxford, OH 45056, USA; E-Mail | |
关键词: nitrification; ammonia oxidation; ammonia-oxidizing archaea; ammonia-oxidizing bacteria; starvation; ammonia monooxygenase; | |
DOI : 10.3390/life5021396 | |
来源: mdpi | |
【 摘 要 】
In their natural habitats, microorganisms are often exposed to periods of starvation if their substrates for energy generation or other nutrients are limiting. Many microorganisms have developed strategies to adapt to fluctuating nutrients and long-term starvation. In the environment, ammonia oxidizers have to compete with many different organisms for ammonium and are often exposed to long periods of ammonium starvation. We investigated the effect of ammonium starvation on ammonia-oxidizing archaea (AOA) and bacteria (AOB) enriched from freshwater lake sediments. Both AOA and AOB were able to recover even after almost two months of starvation; however, the recovery time differed. AOA and AOB retained their 16S rRNA (ribosomes) throughout the complete starvation period. The AOA retained also a small portion of the mRNA of the ammonia monooxygenase subunit A (
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190012334ZK.pdf | 721KB | download |