Biocontrol of Lysobacter enzymogenes CQ18 against the tobacco powdery mildew fugus, Erysiphe cichoracearum

Chemical and Biological Technologies in Agriculture

Table 1 Antifungal metabolites detected in the L. enzymogenes CQ18 fermentation liquid

Groups	Metabolites	Formula	Functions
Organic acids
	L-Pyroglutamic acid	C₅H₇NO₃	Antifungal activity [53, 54]
	Gentisic acid	C₇H₆O₄	Activation of plant defenses [56, 57]
	N-Undecylbenzenesulfonic acid	C₁₇H₂₈O₃S	Inhibition of fungal mycelial growth [48] Inhibition of fungal mycelial growth [48]
	N-Ribosylhistidine	C₁₁H₁₇N₃O₆
	Hexyl salicylic acid	C₁₃H₁₈O₃	Antimicrobial activity [49,50,51] Antimicrobial activity [52] As a module in activating disease resistance [58]
	4-Formylsalicylic acid	C₈H₆O₄
	P-Salicylic acid	C₇H₆O₃
	13-Oxo-9,11-tridecadienoic acid	C₁₃H₂₀O₃	Antifungal activity [59]
	12-Oxo-2,3-dinor-10,15-phytodienoic acid,	C₁₆H₂₄O₃	Antifungal activity [60]
	11( Z)-Eicosenoic acid,	C₂₀H₃₈O₂	Damage to fungal cell membranes [45]
	4-(3-Pyridyl)-3-butenoic acid	C₉H₉NO₂	antifungal activity [61]
Quinone
	Nanaomycin	C₁₆H₁₄O₆	Broad-spectrum antibiotic (bacteria and fungi)[62]
Pyrimidines
	N-Formyl-4-amino-5-aminomethyl-2-methylpyrimidine	C₇H₁₀N₄O	Fungicidal activity [63]
	3'-Amino-3'-deoxythymidine	C₁₀H₁₅N₃O₄	Broad-spectrum antibiotic (bacteria and fungi) [64]
Σ	14