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Updated: Apr 3, 2026

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
Published on: December 30, 2021
Micromonospora nickelidurans sp. nov., isolated from soil from a nickel-mining site
Yan Bing Lin1,2, Miao Chun Fan1, Yan Qing Guo1
1College of Life Sciences, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A & F University, Yangling Shaanxi 712100, PR China.
Abstract:
An actinomycete, strain K55T, was isolated from a composite soil sample from a nickel mine,collected from Yueyang, Shaanxi Province, PR China. Strain K55T showed 16S rRNA gene sequence similarities of 98.73 %–98.51 % to species of the genus Micromonospora, including Micromonospora haikouensis 232617T, Micromonospora coxensis 2-30-b(28)T, Micromonospora wenchangensis 2602GPT1-05T, Micromonospora matsumotoense IMSNU22003T, Micromonospora maoerensis NEAU-MES19T, and Micromonospora humi P0402T. This strain harboured meso-diaminopimelic acid, alanine and glycine as the major cell-wall amino acids, xylose and glucose as the characteristic whole-cell sugars, and iso-C15 : 0(20.53 %),iso-C17 : 0 (12.74 %), iso-C16 : 0 (12.15 %), anteiso-C17 : 0 (7.97 %), C17 : 1ω8c(7.49 %) and C17 : 0 (6.63 %) as the dominant fatty acids. The major menaquinones were MK-10(H4) and MK-10(H6). The phospholipid profile comprised phosphatidylethanolamine,diphosphatidylglycerol, phosphatidylinositol, phosphatidylglycerol and unknown phosphoglycolipids. The DNA G+C content was 71.4 mol%. A comprehensive analysis ofseveral physiological and biochemical traits and DNA–DNA relatedness indicated that strainK55T was different from closely related species. These phenotypic, genotypic and chemotaxonomic data suggest that strain K55T represents a novel species of the genus Micromonospora, for which the name Micromonospora nickelidurans sp. nov., is proposed. The type strain is K55T (5JCM 30559T5ACCC19713T).
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