Published April 1, 2020 | Version v1
Taxonomic treatment Open

Levilactobacillus Zheng & Wittouck & Salvetti & Franz & Harris & Mattarelli & O'Toole & Pot & Vandamme & Walter & Watanabe & Wuyts & Felis & Gänzle & Lebeer 2020, GEN. NOV.

Description

DESCRIPTION OF LEVILACTOBACILLUS GEN. NOV.

Levilactobacillus (Le.vi.lac.to.ba.cil'lus. L. v. levare to lift up, release, relieve; N.L. masc. n. Lactobacillus a bacterial genus name; N.L. masc. n. Levilactobacillus a lactobacillus with leavening potential, referring to the occurrence of multiple species in the genus in type I sourdoughs that are used as sole leavening agent).

Gram-positive, rod-shaped, catalase negative, heterofermentative. Most strains grow at 15 °C but not at 45 °C, are acid tolerant, growing generally in the pH range of 4.0–7.0 and produce DL-lactic acid. The genome size ranges from 1.97 Mbp for Levilactobacillus bambusae to 3.38 Mbp for Levilactobacillus cerevisiae, the mol% G+C content ranges from 46.3–55.9 %. Strains in the genus lead a free-living lifestyle and were isolated from sourdough or fermented vegetable products but also occur as spoilage organisms in alcoholic beverages. Strains in the genus generally harbour genes coding for transaldolase/transketolase which mediate metabolism of pentoses to pyruvate. Levilactobacillus brevis is used commercially as starter culture in food and feed applications.

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

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

Notes

Published as part of 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, pp. 2782-2858 in International Journal of Systematic and Evolutionary Microbiology 70 (4) on page 2836, DOI: 10.1099/ijsem.0.004107, http://zenodo.org/record/10114954

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