Genomic insights into Marinobacterium sediminicola CGMCC 1.7287T: A polyhydroxyalkanoate-producing bacterium isolated from marine sediment

Abstract

Polyhydroxyalkanoate (PHA) is a promising polyester with superior properties including biodegradability, biocompatibility, and biorenewability. Marinobacterium sediminicola CGMCC 1.7287^T, isolated from marine sediment in the East China Sea, has been found capable of producing PHA using volatile fatty acids as cost-effective substrates. Here, we report the genomic characteristics of M. sediminicola CGMCC 1.7287^T, which possesses a circular chromosome of 3,554,135 bp with a GC content of 56.10 %. Gene annotation analysis revealed that the bacterium harbors enzymes involved in volatile fatty acids utilization, PHA synthesis, and ectoine accumulation. The presence of genes associated with ectoine synthesis suggests that this bacterium has stress resistance and cellular protection mechanism to adapt to saline environments. The genomic features provide important references for further genetic engineering of marine bacteria to effectively utilize volatile fatty acids for PHA production and enhance stress tolerance through ectoine accumulation.