A novel actinobacterium, strain ZYX- F - 186( T) , was isolated from marine sediment sampled on Yongxing Island, Hainan Province, PR China. Based on the results of 16S rRNA gene sequence analysis, strain ZYX- F - 186(T) belongs to the genus Phytohabitans , with high similarity to Phytohabitans kaempferiae KK1-3(T) (98.3 %), Phytohabitans rumicis K11 -0047(T) (98.1 %), Phytohabitans flavus K09 -0627(T) (98.1 %), Phytohabitans houttuyneae K11 -0057(T) (97.9 %), Phytohabitans suffuscus K07 -0523(T) (97.7 %), and Phytohabitans aurantiacus RD004123(T) (97.7 %). Phylogenetic analysis of 16S rRNA gen...