Draft Genomes of Nitrogen-fixing Frankia Strains Ag45/Mut15 and AgPM24 Isolated from Root Nodules of Alnus Glutinosa - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Genomics Année : 2022

Draft Genomes of Nitrogen-fixing Frankia Strains Ag45/Mut15 and AgPM24 Isolated from Root Nodules of Alnus Glutinosa

Résumé

The genomes of two nitrogen-fixing Frankia strains, Ag45/Mut15 and AgPM24, isolated from root nodules of Alnus glutinosa are described as representatives of a novel candidate species. Phylogenomic and ANI analyses confirmed that both strains are related to cluster 1 frankiae, and that both strains belong to a novel species. At 6.4-6.7 Mb, their genomes were smaller than those of other cultivated Alnus-infective cluster 1 strains but larger than that of the non-cultivated Alnus-infective cluster 1 Sp+ strain AgTrS that was their closest neighbor as assessed by ANI. Comparative genomic analyses identified genes essential for nitrogen-fixation, gene composition as regards COGs, secondary metabolites clusters and transcriptional regulators typical of those from Alnus-infective cluster 1 cultivated strains in both genomes. There were 459 genes present in other cultivated Alnus-infective strains lost in the two genomes, spread over the whole of the genome, which indicates genome erosion is taking place in these two strains.
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Dates et versions

hal-04305218 , version 1 (24-11-2023)

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Philippe Normand, Petar Pujic, Danis Abrouk, Spandana Vemulapally, Trina Guerra, et al.. Draft Genomes of Nitrogen-fixing Frankia Strains Ag45/Mut15 and AgPM24 Isolated from Root Nodules of Alnus Glutinosa. Journal of Genomics, 2022, 10, pp.49-56. ⟨10.7150/jgen.74788⟩. ⟨hal-04305218⟩
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