Results 51 to 60 of about 12,479 (212)

Changes in the activities of key enzymes and the abundance of functional genes involved in nitrogen transformation in rice rhizosphere soil under different aerated conditions

Journal of Integrative Agriculture, 2023
Soil microorganisms play important roles in nitrogen transformation. The aim of this study was to characterize changes in the activity of nitrogen transformation enzymes and the abundance of nitrogen function genes in rhizosphere soil aerated using three
Chun-mei XU, De-shun XIAO, CHEN Song, CHU Guang, LIU Yuan-hui, ZHANG Xiu-fu, WANG Dan-ying   +6 more
doaj   +1 more source

Microbiota of Tayohounta, a fermented baobab flavour food of Benin [PDF]

, 2011
The present work provides data on the microbial composition of Tayohounta, a product of natural fermentation of baobab seed kernels. Samples were collected from 3 different small scale producers from Benin at the end of the fermentation process ...
Chadare, F.J., Hounhouigan, J.D., Jonkman, J., Nout, M.J.R., Wolkers-Rooijackers, J.C.M., Zwietering, M.H.   +5 more
core   +2 more sources

Cloning, mutagenesis, and nucleotide sequence of a siderophore biosynthetic gene (amoA) from Aeromonas hydrophila [PDF]

Journal of Bacteriology, 1991
Many isolates of the Aeromonas species produce amonabactin, a phenolate siderophore containing 2,3-dihydroxybenzoic acid (2,3-DHB). An amonabactin biosynthetic gene (amoA) was identified (in a Sau3A1 gene library of Aeromonas hydrophila 495A2 chromosomal DNA) by its complementation of the requirement of Escherichia coli SAB11 for exogenous 2,3-DHB to ...
S, Barghouthi, S M, Payne, J E, Arceneaux, B R, Byers   +3 more
openaire   +2 more sources

Effects of macrobenthic bioturbation on the abundance and community composition of ammonia-oxidizing prokaryotes under different temperatures

Journal of Freshwater Ecology, 2017
In order to investigate the effects of macrobenthos on the abundance and community composition of ammonia-oxidizing prokaryotes under different temperature conditions, laboratory microcosms containing two kinds of macrobenthos (Corbicula fluminea and ...
Dayong Zhao, Xinyi Cao, Jin Zeng, Rui Huang, Zhongbo Yu   +4 more
doaj   +1 more source

Quantification of ammonia oxidation rates and the distribution of ammonia-oxidizing Archaea and Bacteria in marine sediment depth profiles from Catalina Island, California

Frontiers in Microbiology, 2012
Microbial communities present in marine sediments play a central role in nitrogen biogeochemistry at local to global scales. Along the oxidation-reduction gradients present in sediment profiles, multiple nitrogen cycling processes (such as nitrification,
J. Michael eBeman, Victoria Jean Bertics, Victoria Jean Bertics, Thomas eBraunschweiler, Jesse eWilson   +4 more
doaj   +1 more source

Evaluation of combined root exudate and rhizosphere microbiota sampling approaches to elucidate plant–soil–microbe interactions

New Phytologist, Volume 250, Issue 6, Page 4077-4092, June 2026.
Summary Deciphering the root exudate‐driven interplay between plants and the rhizosphere microbiota is essential for understanding plant adaptation to the environment and future‐proofing crop production. However, sampling root exudates and rhizosphere soil remains challenging due to the low throughput and destructive nature of the process.
Carmen Escudero‐Martinez, Eithne Y. Browne, Henning Schwalm, Michael Santangeli, Molly Brown, Lawrie Brown, David M. Roberts, Aoife M. Duff, Jenny Morris, Peter E. Hedley, Peter Thorpe, James Abbott, Fiona P. Brennan, Davide Bulgarelli, Tim S. George, Eva Oburger   +15 more
wiley   +1 more source

Occurrence and abundance of ammonia‐oxidizing archaea and bacteria from the surface to below the water table, in deep soil, and their contributions to nitrification

MicrobiologyOpen, 2017
Using molecular biology methods (qualitative and quantitative PCR), we determined the occurrence and abundance of ammonia‐oxidizing archaea (AOA) and ammonia‐oxidizing bacteria (AOB) from a dry inland soil in Basel, Switzerland, and from the riparian ...
Lei Zheng, Xue Zhao, Guibing Zhu, Wei Yang, Chao Xia, Tao Xu   +5 more
doaj   +1 more source

Forecasting Root Rot Disease through Predictive Microbial Functional Profiling

Advanced Science, Volume 13, Issue 23, 23 April 2026.
Predicting soil‐borne disease moves beyond observation with a framework that elevates microbial functional genes into reliable forecasting biomarkers. By coupling targeted qPCR assays for core stress‐response genes with machine learning, this method detects root rot risks in pre‐symptomatic soils with over 80% accuracy.
Chuan You, Peng Ren, Ying Guan, Kai Gong, Zhen Hua, Wuxian Zhou, Xinlan Mei, Yikui Wang, Xiaofang Wang, Yangchun Xu, Qirong Shen, Zhong Wei   +11 more
wiley   +1 more source

The influence of salinity and ammonium levels on amoA mRNA expression of ammonia-oxidizing prokaryotes

Water Science and Technology, 2012
This study investigated the influence of salinity and ammonium levels on ammonia-oxidizing bacteria (AOB) and archaea (AOA) by monitoring their amo subunit A (amoA) messenger RNA (mRNA) expression. The aerobic mini-continuous stirred-tank reactors (mini-CSTRs) were operated for 48 h under different salinity or ammonium levels.
T, Fukushima, Y J, Wu, L M, Whang
openaire   +2 more sources

Unifying the global phylogeny and environmental distribution of ammonia-oxidising archaea based on amoA genes [PDF]

Nature Communications, 2018
AbstractAmmonia-oxidising archaea (AOA) are ubiquitous and abundant in nature and play a major role in nitrogen cycling. AOA have been studied intensively based on the amoA gene (encoding ammonia monooxygenase subunit A), making it the most sequenced functional marker gene.
Ricardo J. Eloy Alves, Bui Quang Minh, Tim Urich, Arndt von Haeseler, Christa Schleper   +4 more
openaire   +5 more sources