Evolutionarily conserved nucleosome assembly protein Nap1 is involved in multiple cellular processes in eukaryotes. In this study, we wanted to explore the role of Nap1 in the life cycle of rice blast fungus Magnaporthe oryzae. The null mutant of M. oryzae NAP1 is viable. However, deletion of NAP1 leads to defects in growth, appressorium morphology, and appressorium turgidity. In the future, plant infection studies can be undertaken to find if these defects lead to compromised virulence of this economically important fungal pathogen.
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