*3.2. Fungal Material*

The fungal strain *Stemphylium* sp. (strain number FJJ006) was isolated from an unidentified sponge collected using SCUBA at a depth of 30 m off the coast of Jeju-do (Island), Korea, on 29 September 2014. The sponge specimen was macerated and diluted using sterile seawater. One milliliter of the diluted sample was processed utilizing the spread plate method in YPG agar media (5 g of yeast extract, 5 g of peptone, 10 g of glucose, 0.15 g of penicillin G, 0.15 g of streptomycin sulfate, 24.8 g of Instant Ocean, and 16 g of agar in 1 L of distilled water) plates. The plates were incubated at 28 ◦C for 5 days. The strain was identified using standard molecular biology protocols by DNA amplification and sequencing of the ITS region. Genomic DNA extraction was performed using Intron's i-genomic BYF DNA Extraction Mini Kit according to the manufacturer's protocol. The nucleotide sequence of FJJ006 was deposited in the GenBank database under accession number KU519425. The 18S rDNA sequence of this strain exhibited 99% identity (577/579) with that of *Stemphylium* sp. PNYZ13070801 (GenBank accession number KJ481209).
