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2010
Microbial mats have been the focus of scientific research for a few decades. These small-scale ecosystems are examples of versatile benthic communities of microorganisms, usually dominated by phototrophic bacteria (e.g., Krumbein et al., 1977; Jørgensen et al., 1983). They develop as vertically stratified populations of functionally different groups of
Severin, I., Stal, L.J.
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Microbial mats have been the focus of scientific research for a few decades. These small-scale ecosystems are examples of versatile benthic communities of microorganisms, usually dominated by phototrophic bacteria (e.g., Krumbein et al., 1977; Jørgensen et al., 1983). They develop as vertically stratified populations of functionally different groups of
Severin, I., Stal, L.J.
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Biogeography of diazotrophic bacteria in soils
World Journal of Microbiology and Biotechnology, 2010This study evaluated diazotrophic bacterial diversity of soils from four different sites in South and North America. Approximately one hundred and thirty-nine thousand partial sequences of the small subunit of the bacterial ribosomal RNA gene generated for a previous study were used for this work.
Luiz Fernando Wurdig Roesch +4 more
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Nitrogen fixation and diazotroph diversity in groundwater systems
The ISME Journal, 2023Abstract Biological nitrogen fixation (BNF), the conversion of N2 into bioavailable nitrogen (N), is the main process for replenishing N loss in the biosphere. However, BNF in groundwater systems remains poorly understood. In this study, we examined the activity, abundance, and community composition of diazotrophs in groundwater in the ...
Xiaohan Liu +8 more
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Diversity of Nitrogenase Systems in Diazotrophs
Journal of Integrative Plant Biology, 2006AbstractNitrogenase is a metalloprotein complex that catalyses the reaction of biological nitrogen fixation. At least three genetically distinct nitrogenase systems have been confirmed in diazotrophs, namely Nif, Vnf, and Anf, in which the active‐site central metals are Mo, V, and Fe, respectively. The present review summarizes progress on the genetic,
Ying Zhao +3 more
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Description and Classification of Diazotrophs
1975In comparative biology it is normally observed that organisms possessing a common function also tend to have certain distinguishing physiological, metabolic, structural and genetic characteristics. The organisms which can use N2 to meet their nitrogen requirement, however, appear to violate this rule: except for the ability to fix N2, these organisms ...
Richard C. Burns, Ralph W. F. Hardy
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Science of The Total Environment
Cyanobacteria, the most abundant photosynthetic organisms in oceans, are tightly associated with diverse microbiota. However, the relationships between heterotrophic bacteria and cyanobacteria, particularly the diazotrophic group, are not fully understood.
Hao, Zhang +4 more
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Cyanobacteria, the most abundant photosynthetic organisms in oceans, are tightly associated with diverse microbiota. However, the relationships between heterotrophic bacteria and cyanobacteria, particularly the diazotrophic group, are not fully understood.
Hao, Zhang +4 more
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Osmotolerance of diazotrophic rhizosphere bacteria
Plant and Soil, 1991In the genus Azospirillum tolerance towards high concentrations of sodium chloride, sucrose or polyethylene glycol increased in the order A. amazonense A. lipoferum A. brasilense and A. halopraeferens. In A. brasilense and A. halopraeferens the compatible solutes trehaloseglutamate and an unknown compound were identified. A.
A. Hartmann +2 more
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Diazotrophs and Their Activity in Maize and Wheat
1998Diazotrophs are microorganisms which, in association with plants, are capable of fixing 30–60 and even up to 150 kg of N ha−1, bringing yield increases of the crops grown of 5–15% (Maltseva et al., 1995; Govedarica et al., 1997).
M. Govedarica +4 more
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Rice Endophytic Diazotrophic Bacteria
2010The extension of nitrogen-fixing symbioses to cultivated rice has been a long-standing goal in the field of biological nitrogen fixation. Endophytic bacteria have been found in virtually every plant studied, where they colonize the internal tissues of their host plant and do not cause any harmful effect to their host plant.
Janpen Prakamhang +2 more
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The rice endophytic diazotroph and PGPR
1998The selective pressure of the rhizoplane of rice plants for colonized beneficial rhizobacteria has been investigated. The rhizobacteria were isolated from the rhizoplane of rice variety Yue Guang (with a middling disease-resistant trait) and Yue Fu (with a high yield trait).
W. Song +5 more
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