Salinactinospora qingdaonensis gen. nov., sp. nov., a halophilic actinomycete isolated from a salt pond A novel halophilic, filamentous, actinomycete strain, designated CXB832 T , was isolated from a salt pond in Qingdao, China. Optimal growth occurred at 37 6C, pH 7.0-8.0 and 9-12 % (w/v) NaCl. Strain CXB832 T formed pale yellow to deep yellow branched substrate mycelium without fragmentation. Abundant white aerial mycelium differentiated into long chains of spores and the spores were rod-shaped with smooth surfaces. Strain CXB832 T contained meso-diaminopimelic acid as the diagnostic diamino acid of the cell-wall peptidoglycan, and glucose and xylose as the major whole-cell sugars. The phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phospholipids, glycolipid and unidentified lipids. MK-10(H 8 ), MK-9(H 8 ), MK-10(H 2 ) and MK-10(H 6 ) were the predominant menaquinones. The major fatty acids were i-C 16 : 0 (30.71 %), ai-C 17 : 0 (13.31 %) and C 16 : 0 (11.28 %). The G+C content of the DNA was 60.1 mol%. Comparative analysis of 16S rRNA gene sequences showed that the novel strain was most closely related to genera within the family Nocardiopsaceae, but formed a separate lineage. The highest sequence similarities were to Nocardiopsis arabia DSM 45083 T (95.4 %) and Haloactinospora alba DSM 45015 T (94.9 %). On the basis of phenotypic, chemotaxonomic and phylogenetic distinctiveness, strain CXB832 T represents a new genus and novel species in the family Nocardiopsaceae, for which the name Salinactinospora qingdaonensis gen. nov., sp. nov. is proposed. The type strain of the type species is CXB832 T (5DSM 45442 T 5LMG 25567 T ).