Results 21 to 30 of about 2,156 (159)

Physiological and Metagenomic Characterizations of the Synergistic Relationships between Ammonia- and Nitrite-Oxidizing Bacteria in Freshwater Nitrification

Frontiers in Microbiology, 2018
Nitrification plays a crucial role in global nitrogen cycling and treatment processes. However, the relationships between the nitrifier guilds of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) are still poorly understood ...
Mingwei Cai, Siu-Kin Ng, Chee Kent Lim, Hongyuan Lu, Yangyang Jia, Patrick K. H. Lee   +5 more
doaj   +1 more source

Effects of repeated application of sulfadiazine-contaminated pig manure on the abundance and diversity of ammonia and nitrite oxidizers in the root-rhizosphere complex of pasture plants under field conditions

Frontiers in Microbiology, 2013
In a field experiment, the impact of repeated application of the antibiotic sulfadiazine (SDZ)-contaminated pig manure was assessed on functional microbial communities involved in ammonia and nitrite oxidation in the root-rhizosphere complexes (RRCs) of ...
Julien eOllivier, Julien eOllivier, Daniela eSchacht, Reimo eKindler, Joost eGroeneweg, Marion eEngel, Berndt-Michael eWilke, Kristina eKleineidam, Michael eSchloter   +8 more
doaj   +1 more source

اثر میکروبیوم حاوی باکتری های Nitrosomonas oligotropha و Nitrobacter winogradskyi بر پرورش ماهی قزل‌لای رنگین‌کمان (Onhorhynchus mykiss) [PDF]

مجله بهره‌برداری و پرورش آبزیان, 2022
هدف از انجام این پژوهش، بکارگیری میکروبیوم غنی سازی شده با باکتریهای تجزیه کننده آمونیاک و نیتریت در سیستم مداربسته قزل‌آلای رنگین کمان بود. مجموعه باکتریایی (PAN)حاوی Nitrosomonas oligotropha و Nitrobacter winogradskyi در یک سیستم مداربسته پرورش ماهی ...
علیرضا نیسی, غلامرضا رفیعی, غلامرضا شاه حسینی   +2 more
doaj   +1 more source

Effects of nitrogen fertilizers on the bacterial community diversity and the weathering of purple mudstone in Southwest China

Frontiers in Microbiology, 2023
IntroductionRock weathering is crucial in the development of soil. Yet the role of bacteria in the fine particle-forming process of purple mudstone is not fully understood, especially under nitrogen fertilization.MethodsIn this study, the particles (0.25 
Chunpei Li, Maopan Fan, Xuan Wang, Xuan Wang, Xue Li, Guang Zhao, Gangcai Liu, Jixia Zhao   +7 more
doaj   +1 more source

Isolation and characterization of pure cultures for metabolizing 1,4-dioxane in oligotrophic environments

Water Science and Technology
1,4-Dioxane concentration in most contaminated water is much less than 1 mg/L, which cannot sustain the growth of most reported 1,4-dioxane-metabolizing pure cultures.
Ermias Gebrekrstos Tesfamariam, Dennis Ssekimpi, Sarajeen Saima Hoque, Huan Chen, Joshua D. Howe, Chao Zhou, Yue-xiao Shen, Youneng Tang   +7 more
doaj   +1 more source

Eco-toxicological effects of pesticide residues on soil biological sentinels

Journal of Applied Sciences and Environmental Management, 2018
This research studied the eco-toxicological effects of pesticide residues on soil biological sentinels. Nitrobacter and Nitrosomonas sp. was isolated from Soil samples gotten from dumpsite in Benin City and cultured using Winogradsky medium.
E.I. Atuanya, T Onuoha, E Morka
doaj   +2 more sources

Coexistence of nitrifying, anammox and denitrifying bacteria in a sequencing batch reactor

Frontiers in Microbiology, 2014
Elevated nitrogen removal efficiencies from ammonium-rich wastewaters have been demonstrated by several applications, that combine nitritation and anammox processes. Denitrification will occur simultaneously when organic carbon is also present.
Michela eLangone, Jia eYan, Jia eYan, Suzanne Caroline Marianne Haaijer, Huub J.M. Op Den Camp, Mike eJetten, Gianni eAndreottola   +6 more
doaj   +1 more source

Underlying Mechanism of Wild Radix pseudostellariae in Tolerance to Disease Under the Natural Forest Cover

Frontiers in Microbiology, 2020
Replanting disease caused by negative plant-soil feedback in continuous monoculture of Radix pseudostellariae is a critical factor restricting the development of this common and popular Chinese medicine, although wild R.
Hongmiao Wu, Hongmiao Wu, Jinshen Xia, Jinshen Xia, Xianjin Qin, Xianjin Qin, Huiming Wu, Huiming Wu, Shengkai Zhang, Shengkai Zhang, Yanlin Zhao, Yanlin Zhao, Christopher Rensing, Wenxiong Lin, Wenxiong Lin, Wenxiong Lin   +15 more
doaj   +1 more source

Toxic Response of Nitrobacter to Orange II and Direct Blue 71

Journal of Applied Sciences and Environmental Management, 2004
Tolerance of Nitrobacter to Orange II (C.L. 15510) and Direct Blue 71 (C.I. 34140) dyes was determined by total viable count. There was decrease in percentage log survival with increase in concentration of the toxicants and increase in exposure time ...
N A ORANUSI, J C OGEGBUE
doaj   +1 more source

Effect of Dietary Protein Levels on Growth, Body Composition, and Haematology of Tilapia in Biofloc Without Solid Management System

Aquaculture, Fish and Fisheries, Volume 5, Issue 1, February 2025.
ABSTRACT This study investigated the effects of varying dietary protein levels on the performance of tilapia reared in biofloc culture system without solid management. Five experimental diets containing crude protein (CP) levels of 32, 28, 24, 20, and 16% were tested in a completely randomized design in triplicate.
Sudip Debnath, Md. Shahin Parvez, Sayma Sadia, K. M. Rakibur Hossain, Md. Nazmul Ahsan   +4 more
wiley   +1 more source