1887

Abstract

A novel Gram-stain-negative, aerobic, motile by gliding and filamentous strain, designated 772,was isolated from surface-sterilized root tissue of maize planted in the Fangshan District of Beijing, China. 16S rRNA gene sequence analysis indicated that strain 772 was closely related to SR2-06 and YT21of the family with sequence similarities of 99.0 and 96.9 %, respectively. However, the new isolate exhibited relatively low levels of DNA–DNA relatedness with respect to KCTC 42060 (18.7±1.8 %) and DSM 21054(17.9±2.0%). The DNA G+C content of strain 772 was 44.9 mol%. The respiratory quinone was menaquinone-7 and the polar lipid profile consisted of phosphatidylethanolamine, two unidentified aminophospholipids, two unidentified phospholipids and one unidentified lipid. The major fatty acids were iso-C and iso-CG. The results of the physiological and biochemical tests and minor differences in the fatty acid profiles allowed the clear phenotypic differentiation of strain 772 from the closely related species and. Strain 772thus represents a novel species within the genus , for which the name sp. nov. is proposed. The type strain is 772 (=CGMCC 1.15290=DSM 100760).

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2016-07-01
2022-01-24
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