PMID- 34155336 OWN - NLM STAT- MEDLINE DCOM- 20211213 LR - 20240404 IS - 1751-7370 (Electronic) IS - 1751-7362 (Print) IS - 1751-7362 (Linking) VI - 15 IP - 12 DP - 2021 Dec TI - "Candidatus Dechloromonas phosphoritropha" and "Ca. D. phosphorivorans", novel polyphosphate accumulating organisms abundant in wastewater treatment systems. PG - 3605-3614 LID - 10.1038/s41396-021-01029-2 [doi] AB - Members of the genus Dechloromonas are often abundant in enhanced biological phosphorus removal (EBPR) systems and are recognized putative polyphosphate accumulating organisms (PAOs), but their role in phosphate removal is still unclear. Here, we used 16S rRNA gene sequencing and fluorescence in situ hybridization (FISH) to investigate the abundance and distribution of Dechloromonas spp. in Danish and global wastewater treatment plants. The two most abundant species worldwide revealed in situ dynamics of important intracellular storage polymers, measured by FISH-Raman in activated sludge from four full-scale EBPR plants and from a lab-scale reactor fed with different substrates. Moreover, seven distinct Dechloromonas species were determined from a set of ten high-quality metagenome-assembled genomes (MAGs) from Danish EBPR plants, each encoding the potential for polyphosphate (poly-P), glycogen, and polyhydroxyalkanoates (PHA) accumulation. The two species exhibited an in situ phenotype in complete accordance with the metabolic information retrieved by the MAGs, with dynamic levels of poly-P, glycogen, and PHA during feast-famine anaerobic-aerobic cycling, legitimately placing these microorganisms among the important PAOs. They are potentially involved in denitrification showing niche partitioning within the genus and with other important PAOs. As no isolates are available for the two species, we propose the names Candidatus Dechloromonas phosphoritropha and Candidatus Dechloromonas phosphorivorans. CI - (c) 2021. The Author(s). FAU - Petriglieri, Francesca AU - Petriglieri F AD - Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark. FAU - Singleton, Caitlin AU - Singleton C AUID- ORCID: 0000-0001-9688-8208 AD - Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark. FAU - Peces, Miriam AU - Peces M AUID- ORCID: 0000-0003-2522-7490 AD - Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark. FAU - Petersen, Jette F AU - Petersen JF AD - Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark. FAU - Nierychlo, Marta AU - Nierychlo M AD - Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark. FAU - Nielsen, Per H AU - Nielsen PH AUID- ORCID: 0000-0002-6402-1877 AD - Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark. phn@bio.aau.dk. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210621 PL - England TA - ISME J JT - The ISME journal JID - 101301086 RN - 0 (Polyphosphates) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (Sewage) RN - 27YLU75U4W (Phosphorus) SB - IM MH - Bioreactors MH - In Situ Hybridization, Fluorescence MH - Phosphorus MH - *Polyphosphates MH - RNA, Ribosomal, 16S/genetics MH - Sewage MH - *Water Purification PMC - PMC8630035 COIS- The authors declare no competing interests. EDAT- 2021/06/23 06:00 MHDA- 2021/12/15 06:00 PMCR- 2021/06/21 CRDT- 2021/06/22 06:27 PHST- 2020/12/04 00:00 [received] PHST- 2021/06/02 00:00 [accepted] PHST- 2021/05/22 00:00 [revised] PHST- 2021/06/23 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/06/22 06:27 [entrez] PHST- 2021/06/21 00:00 [pmc-release] AID - 10.1038/s41396-021-01029-2 [pii] AID - 1029 [pii] AID - 10.1038/s41396-021-01029-2 [doi] PST - ppublish SO - ISME J. 2021 Dec;15(12):3605-3614. doi: 10.1038/s41396-021-01029-2. Epub 2021 Jun 21.