Expression analysis of Hypocrea jecorina CBS999.97(MAT1-2) wild-type and delta-env1 strains in four different light and darkness conditions

Investigation of whole genome gene expression level changes in response to different light conditions of the H. jecorina CBS999.97(MAT1-2) parental strain (W) and the deletion strain delta-env1 (E). These two strains were grown on malt extract agar(Merck) at 25℃ in four different conditions: (1) 24L: constant light illumination (24L); (2) 12L12D: in a 12h light/dark cycle and then 6h light illumination; (3) 12D12L: in a 12h dark/light cycle and then 6h constant darknes; (4) 24D: constant darkness. The wild-type strain is potent for sexual development in 12D12L, 12L12D and 24D, whereas the delta-env1 mutant undergo sexual development only in 24D. By contrast, the wild-type strain is female sterile in 24L, and the delta-env1 mutant is female sterile in 12D12L, 12L12D and 24D. Our results reveal that conidation-specific genes, mating locus gene, h-type maitng pheromone genes, and genes invovled in processing and secretion of h-type mating pheromone are significantly upregulated in all four female sterile conditions (W-24L, E-12L12D, E-12D12L and E-24L). We used two biological replicates of two H. jecorina CBS999.97 (MAT1-2) strains, wild-type (W) and delta-env(E) on the cellophane-covered malt extract agar (MEA) plate at 25℃ for 7.25 days.