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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Journal ArticleDOI
Significant nonsymbiotic nitrogen fixation in Patagonian ombrotrophic bogs.
TL;DR: It is suggested that nonsymbiotic N2 fixation overcomes N deficiency in different vegetation communities and has great significance for N cycling and peat accumulation in pristine peatlands.
Journal ArticleDOI
Plant growth promoting potential of psychrotolerant Dyadobacter sp. for pulses and finger millet and impact of inoculation on soil chemical properties and diazotrophic abundance.
TL;DR: Pot trial-based study showed that Dyadobacter sp.
Journal Article
Role of biofertilizers in agriculture: a brief review
TL;DR: Bio-fertilizer contains microorganisms which promote the adequate supply of nutrients to the host plants and ensure their proper development of growth and regulation in their physiology.
Book ChapterDOI
Rhizosphere as Hotspot for Plant-Soil-Microbe Interaction
TL;DR: The abiotic and biotic factors that may manage plant-microbe interactions in the rhizosphere as well as in those parts of the soil furthest from the root, focusing on root architecture and nitrate as well are discussed.
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.