Agrobacterium tumefaciens Is a Diazotrophic Bacterium [PDF]
This is the first report that Agrobacterium tumefaciens can fix nitrogen in a free-living condition as shown by its abilities to grow on nitrogen-free medium, reduce acetylene to ethylene, and incorporate 15 N supplied as 15 N 2 .
L, Kanvinde, G R, Sastry
openaire +2 more sources
Deep-Sea Archaea Fix and Share Nitrogen in Methane-Consuming Microbial Consortia [PDF]
Nitrogen-fixing (diazotrophic) microorganisms regulate productivity in diverse ecosystems; however, the identities of diazotrophs are unknown in many oceanic environments. Using single-cell–resolution nanometer secondary ion mass spectrometry images of ^(
Dekas, Anne E. +2 more
core +2 more sources
Analysis of nifH-RNA reveals phylotypes related to Geobacter and Cyanobacteria as important functional components of the N2-fixing community depending on depth and agricultural use of soil [PDF]
In this survey, a total of 80 787 reads and 28 171 unique NifH protein sequences were retrieved from soil RNA. This dataset extends our knowledge about the structure and diversity of the functional diazotrophic communities in agricultural soils from ...
Aguilar, Orlando Mario +4 more
core +3 more sources
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]
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 +12 more sources
Molecular evidence for sediment nitrogen fixation in a temperate New England estuary [PDF]
Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacing nitrogen fixation (N2-fixation). However, recent work suggests that we have potentially underestimated the importance of heterotrophic sediment N2 ...
Foster, Sarah Q. +3 more
core +3 more sources
Seasonal modulation of mesoscale processes alters nutrient availability and plankton communities in the Red Sea [PDF]
Hydrographic and atmospheric forcing set fundamental constraints on the biogeochemistry of aquatic ecosystems and manifest in the patterns of nutrient availability and recycling, species composition of communities, trophic dynamics, and ecosystem ...
Al-Aidaroos, Ali M. +9 more
core +1 more source
The Unique Biogeochemical Signature of the Marine Diazotroph Trichodesmium [PDF]
The elemental composition of phytoplankton can depart from canonical Redfield values under conditions of nutrient limitation or production (e.g., N fixation). Similarly, the trace metal metallome of phytoplankton may be expected to vary as a function of both ambient nutrient concentrations and the biochemical processes of the cell.
Nuester, Jochen +4 more
openaire +3 more sources
Herbaspirillum seropedicae is an endophytic bacterium that can fix nitrogen and synthesize phytohormones, which can lead to a plant growth-promoting effect when used as a microbial inoculant.
Luiz Eduardo Souza da Silva Irineu +10 more
doaj +1 more source
Taxonomy and Phylogeny of Diazotrophs
The biodiversity of nitrogen-fixing organisms is huge. Taxonomic and phylogenetic research is needed to structure this diversity, to facilitate communication among scientists, and to increase our understanding of the evolution and biology of diazotrophs.
Lindström, K. +8 more
openaire +3 more sources
Inoculation of diazotrophic bacteria in chicory [PDF]
ABSTRACT Inoculating crops with diazotrophic bacteria constitutes a feasible biotechnological tool to reduce or even avoid the use of nitrogen fertilizers and to improve the nutritional status of crops. However, the potential use of such technology is limited due to the lack of studies in diverse vegetable crops. We evaluated the production of chicory (
Caliane da S Braulio +5 more
openaire +3 more sources

