Complete genome sequence of Serinicoccus sp. JLT9, an actinomycete isolated from the shallow-sea hydrothermal system

Abstract

Serinicoccus sp. JLT9 was a novel rare actinomycete, isolated from the shallow-sea hydrothermal system. Here, we present the complete genome sequence of Serinicoccus sp. JLT9, which consists of 3,610,932 bp with a GC content of 72.43%. The genome data provides insight into microbial adaption to the shallow-sea hydrothermal system and facilitates the discovery of natural compounds in the future.

Introduction

Hydrothermal vents represent a unique habitat in the marine ecosystem and occur over a wide depth range, from the intertidal to the abyssal (Tarasov et al., 2005). Deep-sea hydrothermal systems are known to harbor numerous metabolically diverse microorganisms with potential biotechnological and environmental implications thus have received a great deal of attention (He and Zhang, 2016). However, comparatively few investigations on microbial community have been conducted in the shallow-sea hydrothermal systems (Tang et al., 2013). Shallow-sea hydrothermal systems (at the depth < 200 m) provide more instant access to investigate microbial genetic resource, which usually occur near active coastal or submarine volcanoes (Tang et al., 2013). The hydrothermal fluids vary greatly in their temperature, pH, and chemical composition due to subseafloor physical and chemical processes such as fluid-rock interactions, and the mixture of fluids and seawaters (Tarasov et al., 2005).

The genus Serinicoccus was a rare actinomycete taxon and the majority of isolates were collected at surface seawater and marine sediment (Traiwan et al., 2011, Xiao et al., 2011a, Yi et al., 2004). Marine actinomycete is underexploited source for the discovery of natural compounds (Bull et al., 2005). A potentially useful antitumor agent (seriniquinone) (Trzoss et al., 2014) and six bioactive compounds (Yang et al., 2013) were isolated from the representatives of the genus Serinicoccus. Here we present the complete genome sequence of Serinicoccus sp. JLT9. Serinicoccus sp. JLT9 was an aerobic, non-motile, non-sporulating, coccoid-shaped and yellow-colored, Gram-positive bacterium, which was obtained from the shallow-sea hydrothermal system, Kueishan Islet, offshore northeast of Taiwan. 16S rRNA gene in Serinicoccus sp. JLT9 showed 98% sequence similarity with that in Serinicoccus marinus DSM15273 (Yi et al., 2004) within the phylum Actinobacteria. To our knowledge, this study represents the first genome information of a cultivated actinomycete isolated from the shallow-sea hydrothermal system.