Abstract
Meganema perideroedes Gr1T is a filamentous bacterium isolated from an activated sludge wastewater treatment plant where it is implicated in poor sludge settleability (bulking). M. perideroedes is the sole described species of the genus Meganema and of the proposed novel family “Meganemaceae”. Here we describe the features of the type strain Gr1T along with its annotated genome sequence. The 3,409,949 bp long draft genome consists of 22 scaffolds with 3,033 protein-coding and 59 RNA genes and is a part of Genomic Encyclopedia of Type Strains, Phase I: the one thousand microbial genomes KMG project. Notably, genome annotation indicated the potential for facultative methylotrophy. However, the ability to utilize methanol as a carbon source could not be empirically demonstrated for the type strain or for in situ Meganema spp. strains.Electronic supplementary materialThe online version of this article (doi:10.1186/s40793-015-0013-1) contains supplementary material, which is available to authorized users.
Highlights
Strain Gr1T (= DSM 15528 = ATCC BAA-740) is the type strain of Meganema perideroedes in the monospecific genus Meganema [1]
M. perideroedes is a filamentous bacterium isolated from an activated sludge Wastewater treatment plant (WWTP) in Denmark
Classification and features M. perideroedes Gr1T was initially reported to be affiliated with the Methylobacterium/Xanthobacter group based on the common major fatty acid C18:1ω7c [1], which presumably led to its later classification to the family Methylobacteriaceae in ‘The All-Species Living Tree Project Database’ [10]
Summary
Insights from the genome sequence Analysis of the genome of M. perideroedes Gr1T indicates the potential for storage of polyphosphate, PHAs and glycogen, with the former two polymers supported by selective stains in axenic culture and in situ strains in activated sludge [1,9]. Storage of such polymers is common in Bacteria, and shown to be key to the metabolic strategies of several activated sludge organisms, such as the PAO and GAO phenotypes [37].
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