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

ABSTRACT: 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.

SUBMITTER: Normand P 

PROVIDER: S-EPMC9194555 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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

Normand Philippe P   Pujic Petar P   Abrouk Danis D   Vemulapally Spandana S   Guerra Trina T   Carlos-Shanley Camila C   Hahn Dittmar D  

Journal of genomics 20220606

The genomes of two nitrogen-fixing <i>Frankia</i> strains, Ag45/Mut15 and AgPM24, isolated from root nodules of <i>Alnus glutinosa</i> are described as representatives of a novel candidate species<i>.</i> 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 <i>Alnus</i>-infective cluster 1 strains but larger than that of the non-culti  ...[more]

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