AI Article Synopsis

  • * A new lignin-degrading bacterial strain, LCG003, was isolated from seawater at Lu Chao Harbor, showing affiliations with a specific genus and possessing genes that allow it to utilize various carbohydrates and peptone as its carbon and nitrogen sources.
  • * Strain LCG003 has been shown to degrade lignin, as well as certain compounds like 4-hydroxy-benzoate and vanillate, and is capable

Article Abstract

Lignocellulosic materials are composed of cellulose, hemicellulose and lignin and are one of the most abundant biopolymers in marine environments. The extent of the involvement of marine microorganisms in lignin degradation and their contribution to the oceanic carbon cycle remains elusive. In this study, a novel lignin-degrading bacterial strain, LCG003, was isolated from intertidal seawater in Lu Chao Harbor, East China Sea. Phylogenetically, strain LCG003 was affiliated with the genus within the family . Metabolically, strain LCG003 contains various extracellular (signal-fused) glycoside hydrolase genes and carbohydrate transporter genes and can grow with various carbohydrates as the sole carbon source, including glucose, fructose, sucrose, rhamnose, maltose, stachyose and cellulose. Moreover, strain LCG003 contains many genes of amino acid and oligopeptide transporters and extracellular peptidases and can grow with peptone as the sole carbon and nitrogen source, indicating a proteolytic lifestyle. Notably, strain LCG003 contains a gene of dyp-type peroxidase and strain-specific genes involved in the degradation of 4-hydroxy-benzoate and vanillate. We further confirmed that it can decolorize aniline blue and grow with lignin as the sole carbon source. Our results indicate that the species can depolymerize and mineralize lignocellulosic materials and potentially play an important role in the marine carbon cycle.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10821302PMC
http://dx.doi.org/10.3390/microorganisms12010144DOI Listing

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Lignocellulosic materials are composed of cellulose, hemicellulose and lignin and are one of the most abundant biopolymers in marine environments. The extent of the involvement of marine microorganisms in lignin degradation and their contribution to the oceanic carbon cycle remains elusive. In this study, a novel lignin-degrading bacterial strain, LCG003, was isolated from intertidal seawater in Lu Chao Harbor, East China Sea.

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