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Strain XMU 506T,isolated from the rhizosphere soil of an ornamental plant,Lantana camara L.,collected from Xiamen City,China,was determined by a polyphasic approach to clarify its taxonomic position.The aerial mycelium of this aerobic actinobacterium forms long straight spore chains and numerous sporangium-like structures.The optimum growth occurred at 28-30℃,pH 7.0 with 0-1%NaCl.Strain XMU 506T showed the highest 16S rRNA gene sequence similarity(96.45%)to Kibdelosporangium philippinense DSM 44226T,and formed a monophyletic clade in the 16S rRNA gene phylogenetic tree together with the type strains of the genus Kibdelosporangium.The chemotaxonomic properties further supported the assignment of strain XMU 506T to the genus Kibdelosporangium: meso-diaminopimelic acid was the diagnostic amino acid in the cell wall peptidoglycan;glucose,arabinose and ribose with minor amounts of galactose as the whole-cell sugars and MK-9(H4)as the main menaquinone;the phospholipids of the isolate comprised phosphatidylethanolamine,OH-phosphatidylethanolamine,diphosphatidylglycerol and unidentified amino-,glyco-and phospholipids;the major fatty acids of the strain were iso-C16:0,C17:1 ω6c and iso-C16:1 H.The G+C content of genomic DNA was 67.34 mol%.Based on the results of phylogenetic analysis,phenotypic and genotypic characterization,strain XMU 506T represents a novel species in the genus Kibdelosporangium,for which the name Kibdelosporangium lantanae sp.nov.is proposed.The type strain is XMU 506T(=KCTC 29675T =MCCC 1K00430T).