ArticleBMC plant biology2018
A phylogenetic framework of the legume genus Aeschynomene for comparative genetic analysis of the Nod-dependent and Nod-independent symbioses.
Article in BMC plant biology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 26 citations in OpenAlex.
- Aeschynomene americana induces terminal bacteroid differentiation in Bradyrhizobium sp. USDA3516, a novel model for dalbergioid-rhizobium symbiosis.BMC plant biology · 2026Article
- Chloroplast genome sequencing in winged bean (Psophocarpus tetragonolobus L.) and comparative analysis with other legumes.BMC plant biology · 2026Article
- The receptor-like cytoplasmic kinase AeRLCK2 mediates Nod-independent rhizobial symbiosis in Aeschynomene legumes.The Plant cell · 2025Article
- Nodulating another way: what can we learn from lateral root base nodulation in legumes?Journal of experimental botany · 2024Review
- Occurrence and diversity of stem nodulation in Aeschynomene and Sesbania legumes from wetlands of Madagascar.Scientific reports · 2024Article
- Relationship between fruit phenotypes and domestication in hexaploid populations of biribá (PeerJ · 2023Article
- Nod factor perception: an integrative view of molecular communication during legume symbiosis.Plant molecular biology · 2022Review
- An integrated approach reveals how lipo-chitooligosaccharides interact with the lysin motif receptor-like kinase MtLYR3.Protein science : a publication of the Protein Society · 2022Article
- Article
- Genetics of nodulation in Aeschynomene evenia uncovers mechanisms of the rhizobium-legume symbiosis.Nature communications · 2021Article
- Patterns of chromosomal variation in Mexican species ofComparative cytogenetics · 2020Article
- Article
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Authors and funding
23 authors at 11 institutions in 7 countries.
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Abstract
backgroundAmong semi-aquatic species of the legume genus Aeschynomene, some have the property of being nodulated by photosynthetic Bradyrhizobium lacking the nodABC genes necessary for the synthesis of Nod factors. Knowledge of the specificities underlying this Nod-independent symbiosis has been gained from the model legume Aeschynomene evenia but our understanding remains limited due to the lack of comparative genetics with related taxa using a Nod factor-dependent process. To fill this gap, we combined different approaches to perform a thorough comparative analysis in the genus Aeschynomene.
resultsThis study significantly broadened previous taxon sampling, including in allied genera, in order to construct a comprehensive phylogeny. In the phylogenetic tree, five main lineages were delineated, including a novel lineage, the Nod-independent clade and another one containing a polytomy that comprised several Aeschynomene groups and all the allied genera. This phylogeny was matched with data on chromosome number, genome size and low-copy nuclear gene sequences to reveal the diploid species and a polytomy containing mostly polyploid taxa. For these taxa, a single allopolyploid origin was inferred and the putative parental lineages were identified. Finally, nodulation tests with different Bradyrhizobium strains revealed new nodulation behaviours and the diploid species outside of the Nod-independent clade were compared for their experimental tractability and genetic diversity.
conclusionsThe extended knowledge of the genetics and biology of the different lineages sheds new light of the evolutionary history of the genus Aeschynomene and they provide a solid framework to exploit efficiently the diversity encountered in Aeschynomene legumes. Notably, our backbone tree contains all the species that are diploid and it clarifies the genetic relationships between the Nod-independent clade and the Nod-dependent lineages. This study enabled the identification of A. americana and A. patula as the most suitable species to undertake a comparative genetic study of the Nod-independent and Nod-dependent symbioses.
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