Deinococcus pantiae sp. nov., a UV-resistant bacterium isolated from a lake in Schirmacher Oasis, Antarctica

Jiya, Namrata and Khudai, Wormirin and Gupta, Bhavuk and Sindhu, Dev Kant and Shrivastava, Vibhaw and Thite, Sonia and Karodi, Prachi and Vemuluri, Venkata Ramana and Sharma, Avinash (2026) Deinococcus pantiae sp. nov., a UV-resistant bacterium isolated from a lake in Schirmacher Oasis, Antarctica. INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, 76 (2).

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Abstract

A novel UV-resistant, red-pigmented, Gram-stain-positive, aerobic, non-motile, coccoid bacterial strain, designated SM5_A1T, was isolated from lake sediment collected from Schirmacher Oasis, Queen Maud Land, Antarctica. The phylogenetic analysis, based on the 16S rRNA gene sequence, showed that the strain SM5_A1T was closely related to Deinococcus saxicola DSM 15974T (98.39%), Deinococcus frigens DSM 12807T (97.69%) and Deinococcus marmoris DSM 12784T (97.06%). The overall genome-related indices revealed D. marmoris DSM 12784T as the phylogenetically nearest relative with an average nucleotide identity of 89.69%, an average amino acid identity of 92.14% and a digital DNA-DNA hybridization of 38.3%. The DNA G+C content of the isolate was 64.05 mol%, while the predominant respiratory quinone was menaquinone 8 (MK-8). The major cellular fatty acids were summed feature 3 (C16:1 omega 7c/C16:1 omega 6c), C15:1 omega 6c, C16:0, summed feature 9 (C17:1 iso omega 9c) and C15:0 iso. The prominently detected polar lipids were aminolipids, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphoglycolipids and phosphatidylglyceroylalkylamine. Based on the phenotypic, phylogenetic and chemotaxonomic data, the strain SM5_A1T represents a novel species in the genus Deinococcus for which the name Deinococcus pantiae is proposed. The type strain is SM5_A1T (MCC 5347T=JCM 36669T=KCTC 43670T).

Item Type:	Article
Additional Information:	copyright of this article belongs to MICROBIOLOGY SOC
Uncontrolled Keywords:	Deinococcus; genome sequencing; polar microbiology; polyextremophile; UV-resistant
Subjects:	Q Science > QR Microbiology
Depositing User:	Dr. K.P.S.Sengar
Date Deposited:	16 Jul 2026 03:53
Last Modified:	16 Jul 2026 03:53
URI:	http://crdd.osdd.net/open/id/eprint/3449

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