Planomicrobium soli sp. nov., isolated from soil

Abstract

A Gram-staining-positive bacterium, designated strain XN13 T , was isolated from a soil sample collected from ALaShan National Geological Park in Inner Mongolia Autonomous Region, China and subjected to a taxonomic study using a polyphasic approach. Strain XN13 T was found to have a range of chemical and morphological properties consistent with its classification in the genus Planomicrobium. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain XN13 T was related to members of the genus Planomicrobium. The closest phylogenetic relatives were Planomicrobium okeanokoites NBRC 12536 T , Planomicrobium koreense JG07 T , Planomicrobium mcmeekinii S23F2 T and Planomicrobium flavidum ISL-41 T with 98.2 %, 97.8 %, 97.8 % and 97.7 % 16S rRNA gene sequence similarity, respectively. The major cellular fatty acids were anteiso-C 15 : 0 , C 16 : 1 v7c alcohol, iso-C 14 : 0 and C 16 : 1 v11c. The predominant menaquinones were MK-8 and MK-7. The DNA G+C content was 40.3 mol%. The DNA-DNA relatedness values between strain XN13 T and Planomicrobium okeanokoites KCTC 3672 T , Planomicrobium koreense KCTC 3684 T , P. mcmeekinii CGMCC 1.2724 T , Planomicrobium flavidum KCTC 13261 T , Planomicrobium chinense CGMCC 1.3454 T and Planomicrobium glaciei CGMCC 1.6846 T were 36 %, 30 %, 34 %, 29 %, 30 % and 31 %, respectively. The organism is different from recognized species of the genus Planomicrobium in several phenotypic characteristics. On the basis of phenotypic and genotypic properties, strain XN13 T represents a novel species of the genus Planomicrobium, for which the name Planomicrobium soli sp. nov. is proposed. The type strain is XN13 T (5CGMCC 1.12259 T 5KCTC 33047 T ).

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