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Microorganisms
Volume 8
Issue 10
10.3390/microorganisms8101475
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Article

Haloferax profundi sp. nov. and Haloferax marisrubri sp. nov., Isolated from the Discovery Deep Brine-Seawater Interface in the Red Sea

by
Guishan Zhang
1,2,
Xiaoyan Dong
3,
Yingjiao Sun
2,
André Antunes
1,4,
Tyas Hikmawan
1,
Mohamed Fauzi Haroon
1,
Junru Wang
2 and
Ulrich Stingl
1,5,*
1
Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal Jeddah 23955-6900, Saudi Arabia
2
Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
3
Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China
4
State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Taipa, Macau SAR, China
5
Department of Microbiology and Cell Sciences, Fort Lauderdale Research and Education Center, UF/IFAS, University of Florida, Davie, FL 33314, USA
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(10), 1475; https://doi.org/10.3390/microorganisms8101475
Received: 28 August 2020 / Revised: 17 September 2020 / Accepted: 21 September 2020 / Published: 25 September 2020
(This article belongs to the Section Environmental Microbiology)
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Abstract

Two extremely halophilic archaeal strains, designated SB29T and SB3T, were isolated from the brine-seawater interface of Discovery Deep in the Red Sea. Cells of both strains were pleomorphic (irregular polyhedrals, ovals, and rods) and stained Gram-negative; colonies were pigmented pink. The sequence similarity of the 16S rRNA gene of strain SB29T with that of its most closely related validly described species (Hfx. sulfurifontis DSM 16227T) and that of strain SB3T with its closest validly described relative (Hfx. denitrificans ATCC 35960T) was 98.1% and 98.6%, respectively. The incomplete draft genomes of SB29T and SB3T are 3,871,125 bp and 3,904,985 bp in size, respectively, and their DNA G + C contents are 60.75% and 65.64%, respectively. The highest ANI values between the genomes of SB29T and SB3T and the most closely related genomes in GenBank were determined as 82.6% (Hfx. sulfurifontis ATCC BAA-897T, GenBank accession no. GCA_000337835.1) and 92.6% (Haloferax denitrificans ATCC 35960T, GenBank accession no. GCA_000337795.1), respectively. These data indicate that the two new isolates cannot be classified into any recognized species of the genus Haloferax, and, therefore, two novel species of the genus Haloferax are proposed: Haloferax profundi sp. nov. (type strain SB29T = JCM 19567T = CGMCC 1.14960T) and Haloferax marisrubri sp. nov. (type strain SB3T = JCM 19566T = CGMCC 1.14958T). View Full-Text
Keywords: Haloferax profundi; Haloferax marisrubri; halophilic archaeon; brine pool Haloferax profundi; Haloferax marisrubri; halophilic archaeon; brine pool
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MDPI and ACS Style

Zhang, G.; Dong, X.; Sun, Y.; Antunes, A.; Hikmawan, T.; Haroon, M.F.; Wang, J.; Stingl, U. Haloferax profundi sp. nov. and Haloferax marisrubri sp. nov., Isolated from the Discovery Deep Brine-Seawater Interface in the Red Sea. Microorganisms 2020, 8, 1475. https://doi.org/10.3390/microorganisms8101475

AMA Style

Zhang G, Dong X, Sun Y, Antunes A, Hikmawan T, Haroon MF, Wang J, Stingl U. Haloferax profundi sp. nov. and Haloferax marisrubri sp. nov., Isolated from the Discovery Deep Brine-Seawater Interface in the Red Sea. Microorganisms. 2020; 8(10):1475. https://doi.org/10.3390/microorganisms8101475

Chicago/Turabian Style

Zhang, Guishan, Xiaoyan Dong, Yingjiao Sun, André Antunes, Tyas Hikmawan, Mohamed F. Haroon, Junru Wang, and Ulrich Stingl. 2020. "Haloferax profundi sp. nov. and Haloferax marisrubri sp. nov., Isolated from the Discovery Deep Brine-Seawater Interface in the Red Sea" Microorganisms 8, no. 10: 1475. https://doi.org/10.3390/microorganisms8101475

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