Antimicrobial activity of Lafoensia pacari phenolics-containing extract against common bean phytopathogens

ABSTRACT Lafoensia pacari represents an alternative to control phytopathogens and common bean (Phaseolus vulgaris L.) diseases. This study aimed investigate the chemical composition of L. phenolics-containing extract obtained from leaves assess its in vitro vivo inhibitory activity against Curtobacterium flaccumfaciens pv. flaccumfaciens, Xanthomonas axonopodis phaseoli, fuscans subsp. fuscans, sp., Colletotrichum lindemuthianum, Fusarium oxysporum Macrophomina phaseolina. The microbial susceptibility screening extract’s potential reduce anthracnose severity bacterial blight were examined. Eleven phenolic compounds identified, eight which described for first time leaves: gentisic, caffeic, p-coumaric, protocatechuic vanillic acids, luteolin, naringenin quercetin. completely inhibited growth at concentration 0.62-1.25 %, as well mycelial C. lindemuthianum (BRM 007626) isolate 5 % (v/v). Under greenhouse conditions, led caused by X. phaseoli 25302) Pérola cultivar a low efficiency 007447) IPA 7419 cultivar.