Peptide which plays a role in the humoral immune response to a subset of filamentous fungi, including F.oxysporum and F.verticillioides. Hemolymph (at protein level). By bacterial infection (at protein level) (PubMed:9736738, PubMed:32038657). Induced by Gram-positive bacteria M.luteus (at protein level) (PubMed:32038657). However, another study found the peptide was present in both immune challenged and unchallenged controls (at protein level) (PubMed:16510152). Adult males infected with spores from F.oxysporum or F.verticillioides display reduced survival. 'Daisho' is the Japanese term for a matched pair of samurai swords, one short and one long, and refers to the role of the two Daisho peptides (Dso1 and Dso2) in defense against fungal infection.