Paucilactobacillus, Zheng & Wittouck & Salvetti & Franz & Harris & Mattarelli & O’Toole & Pot & Vandamme & Walter & Watanabe & Wuyts & Felis & Gänzle & Lebeer, 2020

Zheng, Jinshui, Wittouck, Stijn, Salvetti, Elisa, Franz, Charles M. A. P., Harris, Hugh M. B., Mattarelli, Paola, O’Toole, Paul W., Pot, Bruno, Vandamme, Peter, Walter, Jens, Watanabe, Koichi, Wuyts, Sander, Felis, Giovanna E., Gänzle, Michael G. & Lebeer, Sarah, 2020, A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae, International Journal of Systematic and Evolutionary Microbiology 70 (4), pp. 2782-2858 : 2829

DESCRIPTION OF PAUCILACTOBACILLUS GEN. NOV.

Paucilactobacillus (Pau.ci.lac.to.ba.cil’lus. L. masc. adj. paucus few; N.L. masc. n. Lactobacillus a bacterial genus name; N.L. masc. n. Paucilactobacillus a lactobacillus that ferments few carbohydrates).

Gram positive, rod-shaped, catalase negative, heterofermentative, and aerotolerant. Growth is observed at between 20 and 37 °C. Several species are psychrotrophic but Paucilactobacillus suebicus grows at 45 °C. Strains in this genus were predominantly isolated from fermented plant material including silage, pickles, and fruit mashes. The adaptation to hexose depleted habitats is indicated by the lack of mannitol dehydrogenase in many strains of the genus; among heterofermentative lactobacilli, this property is shared only with Secundilactobacillus that is isolated from related habitats. Paucilactobacillus species preferentially metabolise pentoses and many strains do not ferment disaccharides. The mol% G+C content of DNA ranges from 35.6 to 43.5; and the genome size ranges from 1.75 to 2.57 Mbp.

A phylogenetic tree on the basis of 16S rRNA genes of all species in the genus Paucilactobacillus is provided in Figure S 6M .

The type species of the genus is Paucilactobacillus vaccinostercus comb. nov.; Paucilactobacillus was previously referred to as L. vaccinostercus group.

Figures

Fig. 6. Gene family presence/absence patterns in Lactobacillaceae and Leuconostocaceae. Each column represents a gene family presence/absence pattern in species of Lactobacillaceae and Leuconostoaceae, where presence is indicated with a dot. The absolute number of gene families that conform to each pattern is visualized in the marginal bar plot at the top. Separations between phylogroups are indicated with horizontal black lines. We defined genes that were present in all genomes of a clade and in none of the genomes outside of that clade as ‘signature genes’ (dark blue); other genes are shown in light blue. Only presence/absence patterns followed by four or more gene families are shown. Patterns of presence in a single species or all species are not shown. Unassigned species are clusters of closely related genomes which could not be assigned to a known species due to low whole-genome similarity to a type strain and/or low 16S rRNA similarity to a type strain.