Biological delignification of paddy straw and Parthenium sp. using a novel micromycete Myrothecium roridum LG7 for enhanced saccharification

► A lignolytic micromycete fungus Myrothecium roridum LG7 was isolated from decaying wood. ► The isolate showed very low cellulase activity along with high lignolytic activity. ► Biological pretreatment of paddy straw and Parthenium sp. with LG7 helped in enhanced saccharification. ► Structural analysis revealed that LG7 delignify the biomass without consuming cellulose resulting in higher sugar yield.