Results 61 to 70 of about 7,283,243 (235)

Diversity pattern of nitrogen fixing microbes in nodules of Trifolium arvense (L.) at different initial stages of ecosystem development [PDF]

open access: yesBiogeosciences, 2013
Legumes can be considered as pioneer plants during ecosystem development, as they form a symbiosis with different nitrogen fixing rhizobia species, which enable the plants to grow on soils with low available nitrogen content.
M. Schloter   +6 more
doaj   +1 more source

Demonstration of a multi-technique approach to assess glacial microbial populations in the field [PDF]

open access: yes, 2016
The ability to perform microbial detection and characterization in-field at extreme environments, rather than on returned samples, has the potential to improve the efficiency, relevance and quantity of data from field campaigns.
Barnett, Megan J.   +4 more
core   +5 more sources

Elevated CO2 and Warming Altered Grassland Microbial Communities in Soil Top-Layers. [PDF]

open access: yes, 2018
As two central issues of global climate change, the continuous increase of both atmospheric CO2 concentrations and global temperature has profound effects on various terrestrial ecosystems.
Deng, Ye   +10 more
core   +4 more sources

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

open access: yesmBio, 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   +6 more
doaj   +1 more source

Impacts of organic and conventional crop management on diversity and activity of free-living nitrogen fixing bacteria and total bacteria are subsidiary to temporal effects [PDF]

open access: yes, 2012
A three year field study (2007-2009) of the diversity and numbers of the total and metabolically active free-living diazotophic bacteria and total bacterial communities in organic and conventionally managed agricultural soil was conducted at the ...
A. Mark Ibekwe   +72 more
core   +3 more sources

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

open access: yesFrontiers 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   +16 more
doaj   +1 more source

Microbial communities and bioactive compounds in marine sponges of the family Irciniidae-a review [PDF]

open access: yes, 2014
Marine sponges harbour complex microbial communities of ecological and biotechnological importance. Here, we propose the application of the widespread sponge family Irciniidae as an appropriate model in microbiology and biochemistry research. Half a gram
Anand   +136 more
core   +2 more sources

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

open access: yesMicrobiology 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   +2 more
doaj   +1 more source

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

open access: yesBMC 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   +8 more
doaj   +1 more source

Horizontal Transfer of Symbiosis Genes within and Between Rhizobial Genera : Occurrence and Importance [PDF]

open access: yes, 2018
Rhizobial symbiosis genes are often carried on symbiotic islands or plasmids that can be transferred (horizontal transfer) between different bacterial species. Symbiosis genes involved in horizontal transfer have different phylogenies with respect to the
Baraúna   +16 more
core   +3 more sources

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