Results 71 to 80 of about 163 (120)

Promotion of partial nitrification by hydroxylamine and differential responses of nitrifying microorganisms

Gongye shui chuli
Hydroxylamine can promote the establishment of partial nitrification. This study investigated its promoting effect from the dual perspectives of microbial activity and gene expression.
MIN Wenhui, SHI Liangliang, WEI Yan, PAN Zhonglin, LI Wen, MA Bin   +5 more
doaj   +1 more source

Comammox Nitrospira act as key bacteria in weakly acidic soil via potential cobalamin sharing

iMeta
AbstractThe discovery of comammox Nitrospira in low pH environments has reshaped the ammonia oxidation process in acidic settings, providing a plausible explanation for the higher nitrification rates observed in weakly acidic soils. However, the response of comammox Nitrospira to varying pH levels and its ecological role in these environments remains ...
Yuxiang Zhao, Jiajie Hu, Jiaqi Wang, Xiangwu Yao, Tong Zhang, Baolan Hu   +5 more
openaire   +3 more sources

Research progress on the physiological metabolic mechanisms and distribution in water treatment systems of ammonia-oxidizing microorganisms

Gongye shui chuli
Nitrification and denitrification processes play crucial roles in biological nitrogen removal in water treatment systems. The ammonia oxidation in nitrification is the rate-limiting process, which converts low-valent ammonia-nitrogen into high-valent ...
GENG Hong, REN Junming, ZHOU Wenming, MENG Han   +3 more
doaj   +1 more source

Genetic and transcriptional profiles of ammonia oxidizing communities in Bohai sediments: abundance, activity, and environmental correlations

Frontiers in Microbiology
Ammonia oxidation, a crucial part in nitrogen cycle, is thought to be jointly driven by ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and complete ammonia oxidation (comammox) in the ocean.
Yining Jiang, Xue Lou, Mingyang Wang, Minggang Zheng, Zhiyao Wang, Hui Chen   +5 more
doaj   +1 more source

Inoculum and pH effects on ammonium removal and microbial community dynamics in aquaponics systems

iScience
Summary: Understanding the ecology of microorganisms is essential for optimizing aquaponics systems. Effects of pH and inoculum on ammonium removal and dynamics of microbial community composition from all compartments of lab-scale aquaponics systems were
Peyman Derikvand, Brittany Sauter, Andrew Keddie, Lisa Y. Stein   +3 more
doaj   +1 more source

Functional redundancy and niche complementarity maintain nitrification stability in rapid sand filters

Frontiers in Microbiology
Nitrification in drinking water biofilters is mediated by a complex guild of ammonia oxidizers, yet the mechanisms facilitating the coexistence of these functionally redundant nitrifier guild members are not well understood.
Alejandro Palomo, Alejandro Palomo, Alejandro Palomo, S. Jane Fowler, S. Jane Fowler, Ibrahim M. Nemer, Borja Valverde-Pérez, Yan Zheng, Yan Zheng, Yunjie Ma, Yunjie Ma, Barth F. Smets, Barth F. Smets   +12 more
doaj   +1 more source

Effects of a Vegetable Eel Co-Culture System on the Soil Ammonia-Oxidizing Microbial Community

Agronomy
(1) Background: A vegetable eel co-culture system is an economically efficient way of agricultural cultivation, which can have an impact on the soil microbial environment and play a pivotal role in the soil nutrient cycle, but there is little research on
Haidan Fan, Naling Bai, Weiguang Lv, Xiangqian Chu, Xianqing Zheng, Shuangxi Li, Juanqin Zhang, Haiyun Zhang, Hanlin Zhang   +8 more
doaj   +1 more source

Straw and biochar amendments enhance cotton nitrogen uptake and yield by regulating ammonia-oxidizing microbial communities in saline water-irrigated fields

Industrial Crops and Products
Soil salinization severely restricts cotton nitrogen uptake and yield in arid saline drip irrigation fields by inhibiting nitrification and disrupting ammonia-oxidizing microbial communities. This study set four treatments (fresh water, FW; saline water,
Xiaowen Guo, Ping Song, Ziqi Guo, Huijuan Guo, Wei Min   +4 more
doaj   +1 more source

Potential survival strategies of novel comammox and nitrite-oxidizing Nitrospira synthesizing osmoprotectants in a wastewater microbiome treating high-ammonia brackish landfill leachate

Microbiome
Background In the late stages of landfill operation, leachate becomes brackish and contains high concentrations of ammonia with limited organic carbon.
Shohei Yasuda, Alejandro Palomo, Barth F. Smets, Akihiko Terada   +3 more
doaj   +1 more source

Network of Nitrifying Bacteria in Aquarium Biofilters: An Unfaltering Cooperation Between Comammox Nitrospira and Ammonia-Oxidizing Archaea

Water
Nitrification plays a crucial role in aquatic ecosystems and in the biofilters used in fish farms. Despite their importance, the role of canonical nitrifiers, comammox bacteria, and archaea has not yet been sufficiently investigated. The aim of this study was to characterize the microbiome of the external canister biofilter in a freshwater fish ...
Martyna Godzieba, Piotr Hliwa, Slawomir Ciesielski   +2 more
openaire   +1 more source