ArticleThe Plant cell2005
The sulfate transporter SST1 is crucial for symbiotic nitrogen fixation in Lotus japonicus root nodules.
Article in The Plant cell, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers.
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96 citing papers in PubMed, 226 citations in OpenAlex.
- ESN3, a nodule-specific small peptide essential for symbiotic nitrogen fixation in Medicago truncatula.The New phytologist · 2026Article
- Molecular mechanisms modulating beneficial plant root-microbe interactions: What's common?Plant communications · 2026Review
- Review
- An updated sulfate transporter phylogeny uncovers a perennial-specific subgroup associated with lignification.Tree physiology · 2025Article
- Maintaining sulfur supply to the symbiosome delays nodule senescence in soybean.Nature communications · 2025Article
- From the archives: Nitrogen matters in crop domestication, rice nitrogen nutrition, and symbiotic nitrogen fixation.The Plant cell · 2025Article
- Nutrient-dependent regulation of symbiotic nitrogen fixation in legumes.Horticulture research · 2025Article
- A mitochondrial metalloprotease FtsH4 is required for symbiotic nitrogen fixation in Lotus japonicus nodules.Scientific reports · 2024Article
- Metal nutrition and transport in the process of symbiotic nitrogen fixation.Plant communications · 2024Review
- Traits linked to natural variation of sulfur content in Arabidopsis thaliana.Journal of experimental botany · 2024Article
- Sulfate transport and metabolism: strategies to improve the seed protein quality.Molecular biology reports · 2024Review
- Comparative phylogenomics and phylotranscriptomics provide insights into the genetic complexity of nitrogen-fixing root-nodule symbiosis.Plant communications · 2024Article
- Differential symbiotic compatibilities between rhizobium strains and cultivated and wild soybeans revealed by anatomical and transcriptome analyses.Frontiers in plant science · 2024Article
- Article
- Insight into the control of nodule immunity and senescence during Medicago truncatula symbiosis.Plant physiology · 2023Article
- Reactive Sulfur Species Produced by Cystathionine γ-lyase Function in the Establishment of Mesorhizobium loti-Lotus japonicus Symbiosis.Microbes and environments · 2023Article
- Signaling and Detoxification Strategies in Plant-Microbes Symbiosis under Heavy Metal Stress: A Mechanistic Understanding.Microorganisms · 2022Review
- SPL12 RegulatesPlants (Basel, Switzerland) · 2022Article
- A roadmap of plant membrane transporters in arbuscular mycorrhizal and legume-rhizobium symbioses.Plant physiology · 2021Review
- Characteristics and Research Progress of Legume Nodule Senescence.Plants (Basel, Switzerland) · 2021Review
36 more citing papers are in PubMed but not listed here.
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Authors and funding
15 authors at 6 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Symbiotic nitrogen fixation (SNF) by intracellular rhizobia within legume root nodules requires the exchange of nutrients between host plant cells and their resident bacteria. Little is known at the molecular level about plant transporters that mediate such exchanges. Several mutants of the model legume Lotus japonicus have been identified that develop nodules with metabolic defects that cannot fix nitrogen efficiently and exhibit retarded growth under symbiotic conditions. Map-based cloning of defective genes in two such mutants, sst1-1 and sst1-2 (for symbiotic sulfate transporter), revealed two alleles of the same gene. The gene is expressed in a nodule-specific manner and encodes a protein homologous with eukaryotic sulfate transporters. Full-length cDNA of the gene complemented a yeast mutant defective in sulfate transport. Hence, the gene was named Sst1. The sst1-1 and sst1-2 mutants exhibited normal growth and development under nonsymbiotic growth conditions, a result consistent with the nodule-specific expression of Sst1. Data from a previous proteomic study indicate that SST1 is located on the symbiosome membrane in Lotus nodules. Together, these results suggest that SST1 transports sulfate from the plant cell cytoplasm to the intracellular rhizobia, where the nutrient is essential for protein and cofactor synthesis, including nitrogenase biosynthesis. This work shows the importance of plant sulfate transport in SNF and the specialization of a eukaryotic transporter gene for this purpose.
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