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- Monthly distribution of ammonia-oxidizing microbes in a tropical bay
- Tie-Qiang Mao , Yan-Qun Li , Hong-Po Dong , Wen-Na Yang , Li-Jun Hou
- J. Microbiol. 2021;59(1):10-19. Published online November 17, 2020
- DOI: https://doi.org/10.1007/s12275-021-0287-5
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Abstract
PDF -
Ammonia oxidation, performed by ammonia-oxidizing archaea
(AOA) and bacteria (AOB), plays a critical role in the cycle
of nitrogen in the ocean. For now, environmental variables
controlling distribution of ammonia-oxidizing microbes are
still largely unknown in oceanic environments. In this study,
we used real-time quantitative PCR and high-throughput sequencing
methods
to investigate the abundance and diversity of AOA and AOB from sediment and water in Zhanjiang Bay. Phylogenic analysis revealed that the majority of AOA amoA sequences in water and sediment were affiliated with the genus Nitrosopumilus, whereas the Nitrosotalea cluster was only detected with low abundance in water. Nitrosomonas and Nitrosospira dominated AOB amoA sequences in water and sediment, respectively. The amoA copy numbers of both AOA and AOB varied significantly with month for both sediment and water. When water and sediment temperature dropped to 17– 20°C in December and February, respectively, the copy number of AOB amoA genes increased markedly and was much higher than for AOA amoA genes. Also, AOA abundance in water peaked in December when water temperature was lowest (17–20°C). Stepwise multiple regression analyses revealed that temperature was the most key factor driving monthly changes of AOA or AOB abundance. It is inferred that low water temperature may inhibit growth of phytoplankton and other microbes and so reduce competition for a common substrate, ammonium. -
Citations
Citations to this article as recorded by
- Unveiling the biogeography of ammonia-oxidizing prokaryotes (AOPs) in the South China Sea: Novel lineages and their ecological niches
Yuexi Ma, Cuihong Jiang, Jiapeng Wu, Xiaoyi Li, Fei Ye, Xiaomei Shen, Yu Wang, Yiguo Hong
Marine Environmental Research.2025; 210: 107266. CrossRef - Oyster cultivation regulating seasonal nitrate cycling in the estuarine water
Xin Zhou, Zhiguang Song, Chunqing Chen, Qingmei Zhu, Fajin Chen
Marine Pollution Bulletin.2025; 220: 118435. CrossRef
- Unveiling the biogeography of ammonia-oxidizing prokaryotes (AOPs) in the South China Sea: Novel lineages and their ecological niches
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