Journal ArticleDOI
Nitrogen-fixing bacteria associated with leguminous and non-leguminous plants
TLDR
A wide diversity of nitrogen-fixing bacterial species belonging to most phyla of the Bacteria domain have the capacity to colonize the rhizosphere and to interact with plants.Abstract:
Nitrogen is generally considered one of the major limiting nutrients in plant growth. The biological process responsible for reduction of molecular nitrogen into ammonia is referred to as nitrogen fixation. A wide diversity of nitrogen-fixing bacterial species belonging to most phyla of the Bacteria domain have the capacity to colonize the rhizosphere and to interact with plants. Leguminous and actinorhizal plants can obtain their nitrogen by association with rhizobia or Frankia via differentiation on their respective host plants of a specialized organ, the root nodule. Other symbiotic associations involve heterocystous cyanobacteria, while increasing numbers of nitrogen-fixing species have been identified as colonizing the root surface and, in some cases, the root interior of a variety of cereal crops and pasture grasses. Basic and advanced aspects of these associations are covered in this review.read more
Citations
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Dissertation
Nitrogen fixation, soil quality and restoration trajectories in agricultural matrices of lowland Canterbury, New Zealand
TL;DR: In this paper, nitrogen fixation, soil quality and restoration trajectories in agricultural matrices of lowland Canterbury, New Zealand were investigated using the AgriMatrices of agriculture matrices.
Journal ArticleDOI
Weeds in Organic Fertility-Building Leys: Aspects of Species Richness and Weed Management
Thomas F. Döring,Jonathan Storkey,J. A. Baddeley,Rosemary P. Collins,Oliver Crowley,Sally A. Howlett,Hannah Jones,Heather McCalman,Mark Measures,Helen Pearce,Stephen Roderick,Christine A. Watson,Martin Wolfe +12 more
TL;DR: In this paper, the authors conducted replicated field trials at six locations in the UK over 24 months, measuring weed cover and biomass in plots sown with monocultures of 12 legume and 4 grass species.
Journal ArticleDOI
Ammonium photo-production by heterocytous cyanobacteria: potentials and constraints
TL;DR: This review surveys data on N2-fixing cyanobacteria for biomass production and ways to induce and improve the excretion of ammonium within cultures under aerobic conditions and compares the available data on maximum ammonium concentrations.
Book ChapterDOI
Rhizosphere, Rhizosphere Biology, and Rhizospheric Engineering
Pankaj Sharma,Mayur Mukut Murlidhar Sharma,Arvind Malik,Medhavi Vashisth,Dilbag Singh,Rakesh Kumar,Baljinder Singh,Anupam Patra,Sahil Mehta,Vimal Pandey +9 more
TL;DR: The rhizosphere is possibly the utmost multifaceted microbiological environment on the planet earth, encompassing a unified grid of plant roots, soil, and various microbiological consortiums as mentioned in this paper.
Posted ContentDOI
Natural bacterial assemblages in Arabidopsis thaliana tissues become more distinguishable and diverse during host development
TL;DR: Phyllosphere tissues housed increasingly distinct microbial assemblages as plants aged, indicating that plants can be considered as collections of tissue habitats in which microbial colonists-- natural or synthetic-- establish with differing success.
References
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Journal ArticleDOI
Generic assignments, strain histories, and properties of pure cultures of cyanobacteria
TL;DR: Revisions are designed to permit the generic identification of cultures, often difficult through use of the field-based system of phycological classification, and are both constant and readily determinable in cultured material.
Journal ArticleDOI
Biological Nitrogen Fixation
Robert H. Burris,Gary P. Roberts +1 more
TL;DR: Highlights in biological nitrogen fixation during the last fifty years are highlighted.
Journal ArticleDOI
Applications of the acetylene-ethylene assay for measurement of nitrogen fixation
TL;DR: The biochemical basis of the assay is described along with relevant characteristics including Km, C2H2/N2 conversion factor, and specific N2[C2H 2]-fixing activities obtained with various systems, and methods of measurement of N2 fixation are compared.
Journal ArticleDOI
Coordinating nodule morphogenesis with rhizobial infection in legumes.
TL;DR: This review focuses on the tissue-specific nature of the developmental processes associated with nodulation and the mechanisms by which these processes are coordinated during the formation of a nodule.
Journal ArticleDOI
Genetic regulation of biological nitrogen fixation
Ray Dixon,Daniel Kahn +1 more
TL;DR: The ability of microorganisms to use nitrogen gas as the sole nitrogen source and engage in symbioses with host plants confers many ecological advantages, but also incurs physiological penalties because the process is oxygen sensitive and energy dependent.