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
More filters
Journal ArticleDOI
Acquisition of phosphorus and nitrogen in the rhizosphere and plant growth promotion by microorganisms
Alan Richardson,José Miguel Barea,Ann McNeill,Claire Prigent-Combaret,Claire Prigent-Combaret +4 more
TL;DR: Features of the rhizosphere that are important for nutrient acquisition from soil are reviewed, with specific emphasis on the characteristics of roots that influence the availability and uptake of phosphorus and nitrogen.
Journal ArticleDOI
Rhizosphere microbiome assemblage is affected by plant development.
TL;DR: It is surmised that plants secrete blends of compounds and specific phytochemicals in the root exudates that are differentially produced at distinct stages of development to help orchestrate rhizosphere microbiome assemblage.
Journal ArticleDOI
Competition between roots and microorganisms for nitrogen: mechanisms and ecological relevance
TL;DR: In this article, the authors evaluate competitive and mutualistic interactions between plants and microorganisms and analyse the ecological consequences of these interactions in the rhizosphere, and they find that despite strong competition between roots and micro-organisms for N, a temporal niche differentiation reflecting their generation times leads to mutualistic relationships in the root network.
Journal ArticleDOI
Role of Plant Growth Promoting Rhizobacteria in Agricultural Sustainability-A Review.
TL;DR: There is a gap between the mode of action (mechanism) of the PGPR for plant growth and the role of thePGPR as biofertilizer—thus the importance of nano-encapsulation technology in improving the efficacy of PGPR is highlighted.
Journal ArticleDOI
The role of mycorrhizae and plant growth promoting rhizobacteria (PGPR) in improving crop productivity under stressful environments.
TL;DR: The key mechanisms involved in plant stress tolerance and the effectiveness of microbial inoculation for enhancing plant growth under stress conditions have been discussed at length in this review.
References
More filters
Journal ArticleDOI
cg12 Expression is specifically linked to infection of root hairs and cortical cells during Casuarina glauca and Allocasuarina verticillata actinorhizal nodule development
Sergio Svistoonoff,Laurent Laplaze,Florence Auguy,John Runions,Robin Duponnois,Jim Haseloff,Claudine Franche,Didier Bogusz +7 more
TL;DR: The expression pattern conferred by the cg12 promoter region after inoculation with Frankia was studied and it was found to be expressed in root hairs and in root and nodule cortical cells containing Frankia infection threads, suggesting that cg 12 expression is linked to plant cell infection by Frankia strains.
Journal ArticleDOI
Purification of the major outer membrane protein of Azospirillum brasilense, its affinity to plant roots, and its involvement in cell aggregation.
TL;DR: Findings suggest that the A. brasilense MOMP acts as an adhesin involved in root adsorption and cell aggregation of this bacterium.
Book ChapterDOI
Alder and lupine enhance nitrogen cycling in a degraded forest soil in Northern Sweden
TL;DR: Measurements indicated that N2-fixing plants can be used to effectively improve soil fertility at high latitudes in northern Sweden.
Journal ArticleDOI
Structure of the Mesorhizobium huakuii and Rhizobium galegae Nod factors: a cluster of phylogenetically related legumes are nodulated by rhizobia producing Nod factors with alpha,beta-unsaturated N-acyl substitutions
Guo-Ping Yang,Frédéric Debellé,Arlette Savagnac,Myriam Ferro,Odile Schiltz,Fabienne Maillet,Danielle Promé,Michel Treilhou,Corinne Vialas,Kristina Lindström,Jean Dénarié,Jean-Claude Promé +11 more
TL;DR: The results suggest that legumes nodulated by rhizobia synthesizing αU‐NFs constitute a phylogenetic cluster in the Galegoid phylum.
Journal ArticleDOI
Design and application of new 16S rRNA-targeted oligonucleotide probes for the Azospirillum-Skermanella-Rhodocista-cluster.
TL;DR: The nested set of new oligonucleotide probes designed allow a fast and reliable in situ identification of bacteria belonging to the Azospirillum-Skermanella-Rhodocista-Cluster at different phylogenetic levels.