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
Morphological, biochemical and molecular characterization of twelve nitrogen-fixing bacteria and their response to various zinc concentration.
TL;DR: It was concluded that increasing the concentration of zinc in the agricultural soil is harmful to beneficial microorganisms and reduces the soil fertility.
Journal ArticleDOI
Cover crop termination techniques affect ground predation within an organic vegetable rotation system: A test with artificial caterpillars
Serena Magagnoli,Antonio Masetti,Laura Depalo,Daniele Sommaggio,Gabriele Campanelli,Fabrizio Leteo,Gábor L. Lövei,Giovanni Burgio +7 more
TL;DR: Field experiments showed that artificial caterpillars could represent a good standardized method to assess predation pressure in different habitats and was positively correlated with springtail abundance.
Journal ArticleDOI
The Intensity of a Bean Fusarium Root Rot Epidemic is Dependent on Planting Strategies
TL;DR: Overall, this suggests that the selected composition of planting strategies can improve bean production and reduce FRR intensity.
Book ChapterDOI
Future Perspective in Organic Farming Fertilization: Management and Product
José David Flores-Félix,Esther Menéndez,Raúl Rivas,Raúl Rivas,Ma de la Encarnación Velázquez,Ma de la Encarnación Velázquez +5 more
TL;DR: The concept of organic farming is based on a holistic view of farming systems, in which components are completely integrated into the system, such as the soil and its microbiota, climatic conditions, plants, and/or animals as mentioned in this paper.
Journal ArticleDOI
Responses of soil nitrogen-fixing, ammonia-oxidizing, and denitrifying bacterial communities to long-term chlorimuron-ethyl stress in a continuously cropped soybean field in Northeast China
TL;DR: Long-term chlorimuron-ethyl application in the continuously cropped soybean field could seriously disturb soil N-transforming communities, and might impact soybean soil biological quality and soybean growth.
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.