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Sinorhizobium melilotiSymbiosisNitrogen FixationMedicago truncatulaSinorhizobiumMedicago sativaMedicagoPlant Root NodulationSinorhizobium frediiRoot Nodules, PlantPlant RootsBacterial ProteinsRhizobiumGene Expression Regulation, BacterialRhizobiaceaeGenes, BacterialPolysaccharides, BacterialMolecular Sequence DataFabaceaeRhizobium leguminosarumMelilotusPlant ProteinsMycorrhizaeLuteolinDNA, BacterialSequence Analysis, DNAGene Expression Regulation, PlantMutationMutagenesis, InsertionalPhylogenyGenome, Bacterial

Model legume Medicago truncatulaSymbioticMutantsMicrobialSymbiosisPlantGenePlantsRootRhizobiumRhizobiaGenesBacteria

Model legume Medicago truncatula2

• S. meliloti forms a symbiotic relationship with legumes from the genera Medicago, Melilotus and Trigonella, including the model legume Medicago truncatula. (wikipedia.org)
• We asked how the plant, soil and microbiome are modulated by symbiosis between the model legume Medicago truncatula and different strains of Sinorhizobium meliloti or Sinorhizobium medicae whose nitrogen-fixing efficiency varies, in three distinct soil types that differ in nutrient fertility, to examine the role of the soil environment upon the plant-microbe interaction during nodulation. (bvsalud.org)

Symbiotic3

• Because soil often contains a limited amount of nitrogen for plant use, the symbiotic relationship between S. meliloti and their legume hosts has agricultural applications. (wikipedia.org)
• M. truncatula mutants deficient in symbiotic signaling did not show induction of MtHEXO2. (bvsalud.org)
• We expect these tools to help provide a new dimension to our understanding of signaling circuits and transcript dynamics in symbiotic interactions of legumes with microbial symbionts. (biomedcentral.com)

Mutants1

• However, E. meliloti mutants defective in either genes uvrA, uvrB or uvrC are sensitive to desiccation, as well as to UV light. (wikipedia.org)

Microbial1

• These results open up the possibility to select inoculation partners best suited for plant, soil type and microbial community. (bvsalud.org)

Symbiosis1

• Indeterminate nodule symbiosis by S. meliloti is conferred by genes residing on pSymA. (wikipedia.org)

Plant1

• These compounds attract S. meliloti to the surface of the root hairs of the plant where the bacteria begin secreting nod factors. (wikipedia.org)

Gene1

• Here, we analyzed the expression of a ß-N-acetylhexosaminidase gene of Medicago truncatula (MtHEXO2) and biochemically characterized the enzyme. (bvsalud.org)

Plants2

• Leghemoglobin, produced by leguminous plants after colonization of S. meliloti, interacts with the free oxygen in the root nodule where the rhizobia reside. (wikipedia.org)
• Plants simultaneously interact with belowground symbionts such as arbuscular mycorrhizal (AM) fungi and aboveground antagonists such as aphids. (bvsalud.org)

Root1

• This study examined the shoot and root transcriptome of barrel medic (Medicago truncatula Gaertn. (bvsalud.org)

Rhizobium3

• Ensifer meliloti (formerly Rhizobium meliloti and Sinorhizobium meliloti) are an aerobic, Gram-negative, and diazotrophic species of bacteria. (wikipedia.org)
• These microsymbionts are distributed among major bacterial genera of the alpha-proteobacteria such as Rhizobium, Bradyrhizobium, Azorhizobium, Mesorhizobium, Ensifer ( Sinorhizobium ), Neorhizobium, Pararhizobium , and Allorhizobium , collectively termed "rhizobia", which can form symbiotic associations with diverse legumes. (frontiersin.org)
• The symbiotic association between plants of the Leguminosae family and soil bacteria belonging to the genera Rhizobium, Azorhizobium, Bradyrhizobium and Sinorhizobium (here referred to as rhizobia) results in the development of nodules, root organs in which rhizobia convert nitrogen into ammonia, which is used by the plant as a nitrogen source. (biologists.com)

Rhizobia1

• Leghemoglobin, produced by leguminous plants after colonization of S. meliloti, interacts with the free oxygen in the root nodule where the rhizobia reside. (wikipedia.org)

Genes5

• The S. meliloti genome contains four genes coding for flagellin. (wikipedia.org)
• Indeterminate nodule symbiosis by S. meliloti is conferred by genes residing on pSymA. (wikipedia.org)
• The proteins encoded by E. meliloti genes uvrA, uvrB and uvrC are employed in the repair of DNA damages by the process of nucleotide excision repair. (wikipedia.org)
• However, E. meliloti mutants defective in either genes uvrA, uvrB or uvrC are sensitive to desiccation, as well as to UV light. (wikipedia.org)
• SNF, which results from the processes of nodulation, rhizobial infection, bacteroid differentiation and nitrogen-fixing reaction, requires the expression of various genes from both symbionts with adaptation to the changing environment. (bvsalud.org)

Bacteria1

• These compounds attract S. meliloti to the surface of the root hairs of the plant where the bacteria begin secreting nod factors. (wikipedia.org)