Complete Genome Sequence of Microbulbifer sp. YPW1 from Mangrove Sediments in Yanpu Harbor, China

Abstract

\n In this work, a strain named YPW1 was isolated from the sediments of an artificial mangrove in Yanpu harbor, China. Whole genomic sequencing was conducted to reveal the potential ecological roles of strain YPW1 for the environment. The result of 16S rRNA gene alignment assigned strain YPW1 into Microbulbifer genus, and then, 10 representative genomes from Microbulbifer genus were selected to compare with YPW1. Results showed that the genome of strain YPW1 possessed more carbohydrate-active enzyme genes to transform various recalcitrant polysaccharides into bioavailable monosaccharides than those of the selected genomes. Furthermore, among the selected genomes, YPW1 was the only strain with nitrate, nitrite, and nitric oxide reductases which could appoint nitrous oxide, a powerful greenhouse gas, as the end-product of its denitrification process. Therefore, strain YPW1 was a member of Microbulbifer genus with special ecological roles that served as the center for the degradation and utilization of polysaccharides and the performer of denitrification with greenhouse gas as the end-product, and the abundance and biological activity of YPW1 could be an indicator to reflect the ecological function of this artificial mangrove in energy material providing and climate regulation.