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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 71, Issue 10

gen. nov., sp. nov., isolated from an intertidal hot spring Free

Abstract

Red-pigmented strains of non-sporeforming, aerobic, chemoorganotrophic bacteria were isolated from intertidal hot springs in Laugarvík, NW-Iceland. Cells stained Gram-negative and formed pleomorphic rods that often had swollen ends and occurred singly or in filaments. Growth was observed at 40-65 °C (optimum at 60 °C), pH 6-9 (optimum at 6.5–8) and 0.5–5% (optimum at 1–2%) (w/v) NaCl. Strain ISCAR-4553 contained MK-7 as the main respiratory quinone and saturated iso and anteiso branched chains of 17 and 15 carbons as the main cellular fatty acids (83.4%). The G+C content of the DNA is 67.3 mol%. The highest 16S rRNA gene sequence similarity was with the genus (92.0%) and followed by , and (88–90%). Genome and phenotype comparisons supported the affiliation of the novel isolates and the genus to the family of the phylum . The described isolates are proposed to be classified as representatives of a novel species belonging to a novel genus, with the name gen. nov., sp. nov. The type strain is ISCAR-4553 (=DSM 110790 = ATCC TSD-179).

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  • Accepted:
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Keyword(s): Rhodocaloribacter , Rhodothermaceae , Rhodothermaeota , Rhodothermales and thermophile
© 2021 The Authors
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2021-10-21
2026-02-10

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Rhodocaloribacter litoris gen. nov., sp. nov., isolated from an intertidal hot spring
Int J Syst Evol Microbiol 71, 005073 (2021); https://doi.org/10.1099/ijsem.0.005073
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/content/journal/ijsem/10.1099/ijsem.0.005073
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