The understanding of enzymatic polysaccharide degradation has progressed intensely in the past few years with the identification of a new class of fungal-secreted enzymes， the lytic polysaccharide monooxygenases (LPMOs) that enhance cellulose conversion. In the fungal kingdom， saprotrophic fungi display a high number of genes encoding LPMOs from family AA9 but the functional relevance of this redundancy is not fully understood.
The understanding of enzymatic polysaccharide degradation has progressed intensely in the past few years with the identification of a new class of fungal-secreted enzymes， the lytic polysaccharide monooxygenases (LPMOs) that enhance cellulose conversion. In the fungal kingdom， saprotrophic fungi display a high number of genes encoding LPMOs from family AA9 but the functional relevance of this redundancy is not fully understood.
