Results 41 to 50 of about 4,509 (176)

Ecological Patterns of nifH Genes in Four Terrestrial Climatic Zones Explored with Targeted Metagenomics Using FrameBot, a New Informatics Tool

mBio, 2013
Biological nitrogen fixation is an important component of sustainable soil fertility and a key component of the nitrogen cycle. We used targeted metagenomics to study the nitrogen fixation-capable terrestrial bacterial community by targeting the gene for
Qiong Wang, John F. Quensen, Jordan A. Fish, Tae Kwon Lee, Yanni Sun, James M. Tiedje, James R. Cole   +6 more
doaj   +1 more source

NifH- Harboring Bacterial Community Composition Across an Alaskan Permafrost Thaw Gradient

Frontiers in Microbiology, 2016
Since nitrogen (N) is often limiting in permafrost soils, we investigated the N2-fixing genetic potential and the inferred taxa harboring those genes by sequencing nifH gene fragments in samples taken along a permafrost thaw gradient in an Alaskan boreal
Christopher Ryan Penton, Christopher Ryan Penton, Caiyun Yang, Caiyun Yang, Liyou Wu, Qiong Wang, Jin Zhang, Feifei Liu, Yujia Qin, Ye Deng, Christopher L Hemme, Tianling Zheng, Edward A.G. Schuur, James M. Tiedje, Jizhong Zhou, Jizhong Zhou, Jizhong Zhou   +16 more
doaj   +1 more source

Molecular Analysis of the Microbial Guild Fixing Nitrogen in Ricefield Soils in Missouri

Microbiology Research
Non-symbiotic diazotrophic microbes are important contributors to global N budgets in cereal crops. Knowledge of the biogeography of the organisms in this functional guild increases our understanding of biological N fixation in diverse locations and ...
Prithi R. Sawli, Mark A. Buchheim, Mark A. Schneegurt   +2 more
doaj   +1 more source

Analysis of nifH DNA and RNA reveals a disproportionate contribution to nitrogenase activities by rare plankton-associated diazotrophs

BMC Microbiology, 2019
Background Holobionts comprising nitrogen-fixing diazotrophs and phytoplankton or zooplankton are ubiquitous in the pelagic sea. However, neither the community structure of plankton-associated diazotrophs (PADs) nor their nitrogenase transcriptional ...
Qing-Song Yang, Jun-De Dong, Manzoor Ahmad, Juan Ling, Wei-Guo Zhou, Ye-Hui Tan, Yuan-Zhou Zhang, Dan-Dan Shen, Yan-Ying Zhang   +8 more
doaj   +1 more source

Diagnosis and Management of Prenatal Hereditary Pyropoikilocytosis

Prenatal Diagnosis, EarlyView.
ABSTRACT Hereditary pyropoikilocytosis (HPP) is a severe hemolytic anemia caused by variants in SPTA1, SPTB, and EPB41. These weaken horizontal interactions in the erythrocyte cytoskeleton, causing membrane fragmentation and splenic sequestration. It will readily cause fetal anemia and often hydrops fetalis. Prenatal diagnosis requires first ruling out
Connor Hartzell, Samantha Stover, Nora Gibson, Timothy Olson, James Connelly, Matthew Grace, Jennifer Andrews   +6 more
wiley   +1 more source

Plant-Mediated Changes in Soil N-Cycling Genes during Revegetation of Copper Mine Tailings

Frontiers in Environmental Science, 2017
Nitrogen limitation represents a major bottleneck during the revegetation of mine tailings. However, controls over key nitrogen-cycling genes in rhizospheric soils under differential vegetation management remain poorly understood.
Yang Li, Zhongjun Jia, Qingye Sun, Jianhua Cheng, Yang Yang, Jing Zhan, Dan Wang   +6 more
doaj   +1 more source

Expression of the Klebsiella pneumoniae nifH gene in Saccharomyces cerevisiae

Enzyme and Microbial Technology, 1987
Dinitrogenase reductase, a component of a complex and highly regulated prokaryotic enzyme, nitrogenase, is expressed in the eukaryote Saccharomyces cerevisiae. A plasmid pH-ADH-1 was constructed that directs the expression of the Klebsiella pneumoniae nifH gene, encoding dinitrogenase reductase, from the yeast alcohol dehydrogenase I promoter.
Claude V. Maina, Allen C. Yun, Aladar A. Szalay   +2 more
openaire   +1 more source

Structure and functional genes associated with carbon, nitrogen, phosphorus, and sulfur cycling processes in periphyton: A comparison between natural and artificial rivers

River, EarlyView.
Network analysis of functional genes among prokaryotes, and eukaryotes in natural and artificial rivers. Abstract Periphyton in aquatic ecosystems plays vital roles in the elemental cycle process and is vulnerable to anthropogenic interference. However, few studies have explored the elemental cycles of carbon (C), nitrogen (N), phosphorus (P), and ...
Yulu Tian, Jiezhang Mo, Jiaxin Liu, Chenghao Li, Jiahua Guo   +4 more
wiley   +1 more source

Temporal dynamics of abundance and composition of nitrogen-fixing communities across agricultural soils.

PLoS ONE, 2013
BackgroundDespite the fact that the fixation of nitrogen is one of the most significant nutrient processes in the terrestrial ecosystem, a thorough study of the spatial and temporal patterns in the abundance and distribution of N-fixing communities has ...
Michele C Pereira E Silva, Brigitte Schloter-Hai, Michael Schloter, Jan Dirk van Elsas, Joana Falcão Salles   +4 more
doaj   +1 more source

Seasonal Shifts in Diazotrophs Players: Patterns Observed Over a Two-Year Time Series in the New Caledonian Lagoon (Western Tropical South Pacific Ocean)

Frontiers in Marine Science, 2020
Coastal and open ocean regions of the Western Tropical South Pacific ocean have been identified as a hotspot of N2 fixation. However, the environmental factors driving the temporal variability of abundance, composition, and activity of diazotrophs are ...
Emmrick Saulia, Emmrick Saulia, Mar Benavides, Britt Henke, Kendra Turk-Kubo, Haley Cooperguard, Olivier Grosso, Anne Desnues, Martine Rodier, Martine Rodier, Cécile Dupouy, Cécile Dupouy, Lasse Riemann, Sophie Bonnet, Sophie Bonnet   +14 more
doaj   +1 more source