ArticleApplied and environmental microbiology2015
Identification of Bradyrhizobium elkanii Genes Involved in Incompatibility with Soybean Plants Carrying the Rj4 Allele.
Article in Applied and environmental microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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Who cites it
32 citing papers in PubMed, 61 citations in OpenAlex.
- Type III effectors of symbiotic Rhizobia include diverse predicted transcriptional and post-transcriptional modulators.PLoS biology · 2026Article
- Coordination of PTI and ETI in legume-rhizobium mutualism.aBIOTECH · 2026Review
- Putative type III effector SkP48 of Bradyrhizobium sp. DOA9 encoding a SUMO protease blocks nodulation in Vigna radiata.Scientific reports · 2025Article
- Enacting partner specificity in legume-rhizobia symbioses.aBIOTECH · 2025Review
- Regulation of Root Nodule Symbiosis by Soybean Rj Genotypes and Rhizobial Effectors.Microbes and environments · 2025Review
- A new type III effector from Bradyrhizobium sp. DOA9 encoding a putative SUMO-protease blocks nodulation in Arachis hypogaea L.Scientific reports · 2024Article
- Widespread Bradyrhizobium distribution of diverse Type III effectors that trigger legume nodulation in the absence of Nod factor.The ISME journal · 2023Article
- Legumes Regulate Symbiosis with Rhizobia via Their Innate Immune System.International journal of molecular sciences · 2023Review
- A Novel Rhizobium sp. Chiba-1 Strain Exhibits a Host Range for Nodule Symbiosis in Lotus Species.Microbes and environments · 2023Article
- The Rhizobial Type 3 Secretion System: The Dr. Jekyll and Mr. Hyde in the Rhizobium-Legume Symbiosis.International journal of molecular sciences · 2022Review
- Bridging the Gap: Type III Secretion Systems in Plant-Beneficial Bacteria.Microorganisms · 2022Article
- Varietas Delectat: Exploring Natural Variations in Nitrogen-Fixing Symbiosis Research.Frontiers in plant science · 2022Review
- The Type III Effectome of the SymbioticBiomolecules · 2021Article
- Rhizobia use a pathogenic-like effector to hijack leguminous nodulation signalling.Scientific reports · 2021Article
- Multiple Domains in the Rhizobial Type III Effector Bel2-5 Determine Symbiotic Efficiency With Soybean.Frontiers in plant science · 2021Article
- Phylogenetic distribution and evolutionary dynamics ofMicrobial genomics · 2020Article
- Urban and agricultural soils in Southern California are a reservoir of carbapenem-resistant bacteria.MicrobiologyOpen · 2020Article
- The Impacts of Domestication and Breeding on Nitrogen Fixation Symbiosis in Legumes.Frontiers in genetics · 2020Review
- Multiple Genes of Symbiotic Plasmid and Chromosome in Type II PeanutFrontiers in microbiology · 2020Article
- QTL Mapping and Data Mining to Identify Genes Associated With theFrontiers in plant science · 2020Article
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Symbioses between leguminous plants and soil bacteria known as rhizobia are of great importance to agricultural production and nitrogen cycling. While these mutualistic symbioses can involve a wide range of rhizobia, some legumes exhibit incompatibility with specific strains, resulting in ineffective nodulation. The formation of nodules in soybean plants (Glycine max) is controlled by several host genes, which are referred to as Rj genes. The soybean cultivar BARC2 carries the Rj4 gene, which restricts nodulation by specific strains, including Bradyrhizobium elkanii USDA61. Here we employed transposon mutagenesis to identify the genetic locus in USDA61 that determines incompatibility with soybean varieties carrying the Rj4 allele. Introduction of the Tn5 transposon into USDA61 resulted in the formation of nitrogen fixation nodules on the roots of soybean cultivar BARC2 (Rj4 Rj4). Sequencing analysis of the sequence flanking the Tn5 insertion revealed that six genes encoding a putative histidine kinase, transcriptional regulator, DNA-binding transcriptional activator, helix-turn-helix-type transcriptional regulator, phage shock protein, and cysteine protease were disrupted. The cysteine protease mutant had a high degree of similarity with the type 3 effector protein XopD of Xanthomonas campestris. Our findings shed light on the diverse and complicated mechanisms that underlie these highly host-specific interactions and indicate the involvement of a type 3 effector in Rj4 nodulation restriction, suggesting that Rj4 incompatibility is partly mediated by effector-triggered immunity.
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