Abstract
Lignocellulosic waste has offered a cost-effective and food security-wise substrate for the generation of biofuels and value-added products. Here, whole-genome sequencing and comparative genomic analyses were performed for Serratia sp. AXJ-M. The results showed that strain AXJ-M contained a high proportion of strain-specific genes related to carbohydrate metabolism. Furthermore, the genetic basis of strain AXJ-M for efficient degradation of cellulose was identified. Cellulase activity tests revealed strong cellulose degradation ability and cellulase activities in strain AXJ-M. mRNA expression indicated that GH1, GH3 and GH8 might determine the strain’s cellulose degradation ability. The SWISS-MODEL and Ramachandran Plot were used to predict and evaluate the 3D structure, respectively. High performance liquid chromatography (HPLC) and gas chromatography-mass spectrometer (GC–MS) were used to analyze the cellulose degradation products. Further research is needed to elucidate the cellulose degradation mechanism and to develop industrial applications for lignocellulosic biomass degradation and waste management.
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