Phylogeny and Metabolic Potential of New Giant Sulfur Bacteria of the Family Beggiatoaceae from Coastal-Marine Sulfur Mats of the White Sea

The family Beggiatoaceae is currently represented by 25 genera in the Genome Taxonomy Database, of which only 6 have a definite taxonomic status. Two metagenome-assembled genomes (MAGs), WS_Bin1 and WS_Bin3, were assembled from metagenomes of the sulfur mats coating laminaria remnants in the White S...

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Bibliographic Details
Published in:International Journal of Molecular Sciences
Main Authors: Nikolai V. Ravin, Tatyana S. Rudenko, Alexey V. Beletsky, Dmitry D. Smolyakov, Andrey V. Mardanov, Margarita Yu. Grabovich, Maria S. Muntyan
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2024
Subjects:
Beggiatoaceae
filamentous colorless sulfur bacteria
phylogeny
metagenome-assembled genome
‘ Candidatus Albibeggiatoa psychrophila’ gen. nov.
sp. nov
‘ Candidatus Parabeggiatoa’
Biology (General)
QH301-705.5
Chemistry
QD1-999
White Sea
Online Access:https://doi.org/10.3390/ijms25116028
https://doaj.org/article/d1d49f69798a4f618c6c0067f5b61f0e
Description
Summary:The family Beggiatoaceae is currently represented by 25 genera in the Genome Taxonomy Database, of which only 6 have a definite taxonomic status. Two metagenome-assembled genomes (MAGs), WS_Bin1 and WS_Bin3, were assembled from metagenomes of the sulfur mats coating laminaria remnants in the White Sea. Using the obtained MAGs, we first applied phylogenetic analysis based on whole-genome sequences to address the systematics of Beggiatoaceae , which clarify the taxonomy of this family. According to the average nucleotide identity (ANI) and average amino acid identity (AAI) values, MAG WS_Bin3 was assigned to a new genus and a new species in the family Beggiatoaceae , namely, ‘ Candidatus Albibeggiatoa psychrophila’ gen. nov., sp. nov., thus providing the revised taxonomic status of the candidate genus ‘BB20’. Analysis of 16S rRNA gene homology allowed us to identify MAG WS_Bin1 as the only currently described species of the genus ‘ Candidatus Parabeggiatoa’, namely, ‘ Candidatus Parabeggiatoa communis’, and consequently assign the candidate genus ‘UBA10656’, including four new species, to the genus ‘ Ca . Parabeggiatoa’. Using comparative whole-genome analysis of the members of the genera ‘ Candidatus Albibeggiatoa’ and ‘ Ca . Parabeggiatoa’, we expanded information on the central pathways of carbon, sulfur and nitrogen metabolism in the family Beggiatoaceae .

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