{"title":"Halobacterium pharaonis sp. nov., a New, Extremely Haloalkaliphilic Archaebacterium with Low Magnesium Requirement","authors":"Gaber S.H. Soliman, Hans G. Trüper","doi":"10.1016/S0721-9571(82)80045-8","DOIUrl":null,"url":null,"abstract":"<div><p><em>Halobacterium pharaonis</em> sp. nov. was isolated from the alkaline brines of eutrophic desert lakes of Wadi Natrun, Egypt. The new species differs from the <em>Halobacterium</em> species so far described in being alkaliphilic, in its extremely low Mg<sup>2+</sup> requirement for growth, and in its DNA base composition (64.3 mol% guanine + cytosine, determined by thermal decomposition; no satellite DNA). Magnesium in concentrations above 0.01 mol/1 (≈ 0.25% w/v MgSO<sub>4</sub>·7H<sup>2</sup>O) inhibits growth. Good growth occurs between pH 7.7 and 9.3, optimal growth at pH 8.5.</p></div>","PeriodicalId":101290,"journal":{"name":"Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie","volume":"3 2","pages":"Pages 318-329"},"PeriodicalIF":0.0000,"publicationDate":"1982-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0721-9571(82)80045-8","citationCount":"97","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0721957182800458","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 97
Abstract
Halobacterium pharaonis sp. nov. was isolated from the alkaline brines of eutrophic desert lakes of Wadi Natrun, Egypt. The new species differs from the Halobacterium species so far described in being alkaliphilic, in its extremely low Mg2+ requirement for growth, and in its DNA base composition (64.3 mol% guanine + cytosine, determined by thermal decomposition; no satellite DNA). Magnesium in concentrations above 0.01 mol/1 (≈ 0.25% w/v MgSO4·7H2O) inhibits growth. Good growth occurs between pH 7.7 and 9.3, optimal growth at pH 8.5.
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