eLife Assessment
The ratio of nuclei to cell volume is a well-controlled parameter in eukaryotic cells. This study now reports important findings that expand our understanding of the regulatory relationship between cell size and number of nuclei. The evidence supporting the conclusions is convincing obtained by applying appropriate and validated methodology in line with current state-of-the-art. The paper will be of broad interest for cell biologists and fungal biotechnologists seeking to understand mechanisms determining cell size and number of nuclei and why this knowledge might also be of importance for the production of enzymes and thus production strains not only of Aspergillus oryzae but also other industrially used fungi.