ArticlePlant molecular biology2005
The Medicago truncatula SUNN gene encodes a CLV1-like leucine-rich repeat receptor kinase that regulates nodule number and root length.
Article in Plant molecular biology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 175 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
175 citing papers in PubMed.
- Peptide hormones in shaping root system architecture and environmental adaptation: Current advances and translational perspectives.Plant communications · 2026Review
- ESN3, a nodule-specific small peptide essential for symbiotic nitrogen fixation in Medicago truncatula.The New phytologist · 2026Article
- Article
- Rhizobial motility preference in root colonization of Medicago truncatula.The New phytologist · 2026Article
- Mutations in legume genes that influence symbiosis create a complex selective landscape for rhizobial symbionts.The ISME journal · 2026Article
- Molecular mechanisms modulating beneficial plant root-microbe interactions: What's common?Plant communications · 2026Review
- Phosphate deficiency reduces nodule formation through a phosphate starvation response-like protein in Phaseolus vulgaris.Plant & cell physiology · 2025Article
- Upstairs, downstairs: conserved and divergent CLAVATA signalling in shoot meristem development and root symbioses.Annals of botany · 2025Review
- The white lupin CCR1 receptor-like kinase controls systemic Autoregulation of Cluster Root and Nodule Development.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Article
- A plant CLE peptide and its fungal mimic promote arbuscular mycorrhizal symbiosis via CRN-mediated ROS suppression.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Nutrient-dependent regulation of symbiotic nitrogen fixation in legumes.Horticulture research · 2025Article
- MicroRNA gatekeepers: Orchestrating rhizospheric dynamics.Journal of integrative plant biology · 2025Review
- Regulation of Root Nodule Symbiosis by Soybean Rj Genotypes and Rhizobial Effectors.Microbes and environments · 2025Review
- Genome editing in grain legumes for food security.Frontiers in genome editing · 2025Review
- Annexin- and calcium-regulated priming of legume root cells for endosymbiotic infection.Nature communications · 2024Article
- Loss of Lateral suppressor gene is associated with evolution of root nodule symbiosis in Leguminosae.Genome biology · 2024Article
- The Defective in Autoregulation (DAR) gene of Medicago truncatula encodes a protein involved in regulating nodulation and arbuscular mycorrhiza.BMC plant biology · 2024Article
- Staying hungry: a roadmap to harnessing central regulators of symbiotic nitrogen fixation under fluctuating nitrogen availability.aBIOTECH · 2024Article
- CLAVATA signaling in plant-environment interactions.Plant physiology · 2024Review
115 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Four Medicago truncatula sunn mutants displayed shortened roots and hypernodulation under all conditions examined. The mutants, recovered in three independent genetic screens, all contained lesions in a leucine-rich repeat (LRR) receptor kinase. Although the molecular defects among alleles varied, root length and the extent of nodulation were not significantly different between the mutants. SUNN is expressed in shoots, flowers and roots. Although previously reported grafting experiments showed that the presence of the mutated SUNN gene in roots does not confer an obvious phenotype, expression levels of SUNN mRNA were reduced in sunn-1 roots. SUNN and the previously identified genes HAR1 (Lotus japonicus) and NARK (Glycine max) are orthologs based on gene sequence and synteny between flanking sequences. Comparison of related LRR receptor kinases determined that all nodulation autoregulation genes identified to date are the closest legume relatives of AtCLV1 by sequence, yet sunn, har and nark mutants do not display the fasciated clv phenotype. The M. truncatula region is syntenic with duplicated regions of Arabidopsis chromosomes 2 and 4, none of which harbor CLV1 or any other LRR receptor kinase genes. A novel truncated copy of the SUNN gene lacking a kinase domain, RLP1, is found immediately upstream of SUNN and like SUNN is expressed at a reduced level in sunn-1 roots.
Indexed as
Identifiers
16240175What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.