Endophytic Bosea spartocytisi sp. nov. Coexists with rhizobia in root nodules of Spartocytisus supranubius growing in soils of Teide National Park (Canary Islands)

Researchers have identified a novel bacterial species, Bosea spartocytisi, coexisting with rhizobia in root nodules of Spartocytisus supranubius in Teide National Park's volcanic soils. This discovery was made through phylogenetic, genomic, chemotaxonomic, and phenotypic analyses, revealing distinct genetic and biochemical traits that differentiate it from known Bosea species. Notably, the strains lack common nodulation and nitrogen fixation genes, suggesting a unique ecological role or symbiotic relationship. The study employed 16S rRNA gene sequencing, MLSA (multi-locus sequence analysis), and genome sequencing to confirm its novelty, with ANIb and dDDH values below established thresholds for species delineation.

Pulido-Suárez, L., Flores-Félix, J. D., Socas-Pérez, N., Igual, J. M., Velázquez, E., Péix, Á., & León-Barrios, M. (2022). Endophytic Bosea spartocytisi sp. nov. Coexists with rhizobia in root nodules of Spartocytisus supranubius growing in soils of Teide National Park (Canary Islands). Systematic and Applied Microbiology, 45(6), 126374. https://doi.org/10.1016/j.syapm.2022.126374