TABLE 1.

Aspergillus niger strains used in the study.

Name	Strain	Relevant genotype	Description	References
Wild-type	N402		Wild-type strain capable of DNA repair and pigment formation which give black-colored spores	Bos et al., 1988
Color mutant	MA93.1	ΔfwnA	Loss of pigment, due to lack of polyketide synthase results in fawn-colored spores	Jorgensen et al., 2011
NHEJ mutant	MA78.6	ΔkusA	Inactive in NHEJ pathway and thus impaired in DNA repair	Meyer et al., 2007
Polar growth mutant	MA80.1	ΔkusA, ΔracA	Inactive in NHEJ pathway and polar growth control	Kwon et al., 2011