ArticleScientific reports2022
Plastid phylogenomics uncovers multiple species in Medicago truncatula (Fabaceae) germplasm accessions.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- MtGRF8 interacts with MtSymCRK and prevents early bacteroid death during Medicago - Sinorhizobium symbiosis.The New phytologist · 2026Article
- Enacting partner specificity in legume-rhizobia symbioses.aBIOTECH · 2025Review
- Substantial structural variation and repetitive DNA content contribute to intraspecific plastid genome evolution.BMC genomics · 2025Article
- Atypical rhizobia trigger nodulation and pathogenesis on the same legume hosts.Nature communications · 2024Article
- Species-specific microsymbiont discrimination mediated by aScience advances · 2024Article
- Two members of a Nodule-specific Cysteine-Rich (NCR) peptide gene cluster are required for differentiation of rhizobia in Medicago truncatula nodules.The Plant journal : for cell and molecular biology · 2024Article
- Defense and senescence interplay in legume nodules.Plant communications · 2024Review
- Genome assembly of Medicago truncatula accession SA27063 provides insight into spring black stem and leaf spot disease resistance.BMC genomics · 2024Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Medicago truncatula is a model legume that has been extensively investigated in diverse subdisciplines of plant science. Medicago littoralis can interbreed with M. truncatula and M. italica; these three closely related species form a clade, i.e. TLI clade. Genetic studies have indicated that M. truncatula accessions are heterogeneous but their taxonomic identities have not been verified. To elucidate the phylogenetic position of diverse M. truncatula accessions within the genus, we assembled 54 plastid genomes (plastomes) using publicly available next-generation sequencing data and conducted phylogenetic analyses using maximum likelihood. Five accessions showed high levels of plastid DNA polymorphism. Three of these highly polymorphic accessions contained sequences from both M. truncatula and M. littoralis. Phylogenetic analyses of sequences placed some accessions closer to distantly related species suggesting misidentification of source material. Most accessions were placed within the TLI clade and maximally supported the interrelationships of three subclades. Two Medicago accessions were placed within a M. italica subclade of the TLI clade. Plastomes with a 45-kb (rpl20-ycf1) inversion were placed within the M. littoralis subclade. Our results suggest that the M. truncatula accession genome pool represents more than one species due to possible mistaken identities and gene flow among closely related species.
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