Friedmanniella antarctica gen. nov., sp. nov., an LL-Diaminopimelic Acid-Containing Actinomycete from Antarctic Sandstone

1 April 1997

journal article
Published by Microbiology Society in International Journal of Systematic and Evolutionary Microbiology

Vol. 47 (2) , 278-283
https://doi.org/10.1099/00207713-47-2-278

Abstract

A gram-positive, aerobic, slowly growing actinomycete was isolated from antarctic sandstone. Packets of spherical cells of this organism form clusters. The diagnostic diamino acid of the peptidoglycan is LL-diaminopimelic acid with glycine in position 1 of the peptide subunit. The major menaquinone is MK-9(H4), and the main cellular fatty acids are 12- and 13-methyltetradecanoic acids. Only a few organic compounds are metabolized. The DNA base composition is 73 mol% G + C. A 16S ribosomal DNA sequence comparison showed that this isolate is a phylogenetic neighbor of the propionibacteria and related taxa. Its closest relative is Microlunatus phosphovorus. Morphological, physiological, and genotypic characteristics support the description of a new genus and new species, Friedmanniella antarctica gen. nov., sp. nov. The type strain is strain AA-1042 (= DSM 11053).

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