Sphingobacterium pedocola sp. nov. a novel halotolerant bacterium isolated from agricultural soil

Abstract

A Gram-reaction-negative halotolerant bacterial strain, designated Ka21T, was isolated from agricultural soil and characterised using a polyphasic approach to determine its taxonomic position. On the basis of 16S rRNA gene sequence analysis, highest similarity was found with Sphingobacterium alkalisoli Y3L14T (96.72%). Cells were observed to be aerobic, non-motile rods. The isolate was found to be able to grow between 0 and 10% of NaCl concentration. The assembled genome of strain Ka21T has a total length of 5.2 Mb with a G + C content of 41.0 mol%. According to the genome analysis, Ka21T encodes several glycoside hydrolases that may play a role in the degradation of accumulated plant biomass in the soil. Based on phenotypic characteristics and phylogenetic analysis, it is concluded that strain Ka21T represents a novel species in the Sphingobacterium genus for which the name Sphingobacterium pedocola sp. nov. is proposed. The type strain of the species is strain Ka21T (= LMG 31575T = NCAIM B.02636T).

Sweat and Sebum Preferences of the Human Skin Microbiota

“…While the highest NaCl concentration tested in this study reached only 1.05% (4× artificial sweat) and is not considered a high salt concentration, many skin microorganisms are highly halotolerant and capable of withstanding drastic changes in osmotic pressure, including Staphylococcus and Corynebacterium species ( 55 – 61 ). In addition, nearly all of the other genera in this study have been identified as being halotolerant in previous reports ( 62 – 67 ).…”

Sweat and sebum preferences of the human skin microbiota

“…While the highest NaCl concentration tested in this study only reached 1.05% (4X artificial sweat) and is not considered a high salt concentration, many skin microorganisms are highly halotolerant and capable of withstanding drastic changes in osmotic pressure, including Staphylococcus and Corynebacterium species (47–53). In addition, nearly all other genera in this study have reports of species being identified as halotolerant (54–59).…”

Proposal of Sphingobacterium allocomposti nom. nov., Mycobacterium chelonae subsp. bovistauri nom. nov. and Lactobacillus delbrueckii subsp. allosunkii nom. nov. as new names with replacement specific or subspecific epithets, respectively, for three illegitimate prokaryotic names Sphingobacterium composti Yoo et al. 2007, Mycobacterium chelonae subsp. bovis Kim et al. 2017 and Lactobacillus delbrueckii subsp. sunkii Kudo et al. 2012; proposal of Christiangramia oceanisediminis comb. nov. and Christiangrami

“…sunkii in 2012 [12]. This name was effectively and validly published in the IJSEM in accordance with the ICNP [5,13]. However, the subspecific epithet 'sunkii' in fact had already been used for the specific epithet of the name of another species within the same genus, viz.…”

“…Mycobacterium bovis Karlson andLessel 1970 (Approved Lists 1980) [10,11]. According to Rule 12b of the ICNP, no specific or subspecific epithets within the same genus may be the same if based on different types [5]. Rule 53 also stipulates that an epithet is illegitimate if it duplicates a specific or subspecific epithet previously validly published for a species or subspecies of the same genus and if this species or subspecies is a different bacterium with a name based upon another type.…”

“…Therefore, the name Sphingobacterium composti Yoo et al 2007 is illegitimate for being a later homonym of Sphingobacterium composti Ten et al 2007 according to Rule 53 of the Code. The homonymy between these two combinations has been long recognized [5,6], but it remains unresolved to date, causing some confusion in the literature [7] The properties of this species are those given by Yoo et al for Sphingobacterium composti [4].…”