Figure 4.
Overexpression of subtilisin inhibitor (SSI) genes in A. pretiosum ATCC 31280 alleviated mycelial fragmentation. (A) Confocal micrographs of mutant with SSI gene APASM_3064 overexpressed. Scale bar: 10 μm. Magnification, 2500×; (B) Confocal micrographs of mutant with SSI gene APASM_6209 overexpressed. Scale bar: 10 μm. Magnification, 2500×; (C) Growth comparison between 31280::pLQ856, the wild-type integrated with vector plasmid pLQ856, and mutants with APASM_3064 or APASM_3064 overexpressed. Error bars: mean ± SD (n = 3 biological replicates); (D) Yield comparison between the control strain 31280::pLQ856 and mutants with APASM_3064 or APASM_6209 overexpressed. Error bars: mean ± SD (n = 3 biological replicates).
