Harzianic acid is a Trichoderma secondary metabolite.
Harzianic acid shows plant growth promotion activity.
3. Harzianic acid has antifungal activity and antibiotic activity against Pythium irregulare, Sclerotinia sclerotiorum, and Rhizoctonia solani.
Harzianic acid, a tetramic acid derivative, with activity of antimicrobial, antibiofilm formation and biofilm disaggregation. Harzianic acid interferes with biofilm formation by limiting bacterial iron availability. Harzianic acid is also a selective inhibitor of Acetohydroxyacid synthase (AHAS), the first enzyme in the branched-chain amino acid biosynthetic pathway. Harzianic acid can used for herbicide and fungicide[1][2].
