Abstract
Granulicella tundricola strain MP5ACTX9T is a novel species of the genus Granulicella in subdivision 1 Acidobacteria. G. tundricola is a predominant member of soil bacterial communities, active at low temperatures and nutrient limiting conditions in Arctic alpine tundra. The organism is a cold-adapted acidophile and a versatile heterotroph that hydrolyzes a suite of sugars and complex polysaccharides. Genome analysis revealed metabolic versatility with genes involved in metabolism and transport of carbohydrates, including gene modules encoding for the carbohydrate-active enzyme (CAZy) families for the breakdown, utilization and biosynthesis of diverse structural and storage polysaccharides such as plant based carbon polymers. The genome of G. tundricola strain MP5ACTX9T consists of 4,309,151 bp of a circular chromosome and five mega plasmids with a total genome content of 5,503,984 bp. The genome comprises 4,705 protein-coding genes and 52 RNA genes.
Highlights
The strain MP5ACTX9T (=ATCC BAA-1859T =DSM 23138T) is the type strain of Granulicella tundricola [tun.dri.co’la
Within the genus Granulicella, eight species are described with validly published names: G. mallensis MP5ACTX8T,G. tundricola MP5ACTX9T, G. arctica MP5ACTX2T,G. sapmiensis S6CTX5AT isolated from Arctic tundra soil [1] and G. paludicola
Strain MP5ACTX9T shares 95.5 - 97.2% 16S rRNA gene identity with tundra soil strains G. mallensis MP5ACTX8T (95.5%), G. arctica MP5ACTX2T (96.9%), G. sapmiensis S6CTX5AT (97.2%) and 95.2 – 97.7% identity with the sphagnum bog strains, G. pectinivorans TPB6011T (97.7%), G. rosea TPO1014T (97.2%), %), G. aggregans TPB6028T (96.8%), G. paludicola LCBR1 (95.9%), and G. paludicola strain OB1010T (95.3%), which were isolated from sphagnum peat
Summary
The strain MP5ACTX9T (=ATCC BAA-1859T =DSM 23138T) is the type strain of Granulicella tundricola [tun.dri.co’la. Tundricola tundra dweller] that was isolated from soil at the Malla Nature Reserve, Kilpisjärvi, Finland; 69°01’N, 20°50’E) and described along with other species of the genus Granulicella isolated from tundra soil [1]. Acidobacteria is a phylogenetically and physiologically diverse phylum [2,3], the members of which are ubiquitously found in diverse habitats and are abundant in most soil environments [4,5] including Arctic tundra soils [6,7]. The abundance of Acidobacteria correlates with soil pH [26,27] and carbon [28,29], with subdivision 1 Acidobacteria being most abundant in slightly acidic soils. Acidobacteria, including members of the genera Granulicella and Terriglobus, dominate the acidic tundra heaths of northern Finland [26,30,31,32].
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