Antibacterial activity of essential oils mixture against PSA. Issue 4 (16th February 2016)

• Record Type: Journal Article
• Authors: Vavala, Elisabetta; Passariello, Claudio; Pepi, Federico; Colone, Marisa; Garzoli, Stefania; Ragno, Rino; Pirolli, Adele; Stringaro, Annarita; Angiolella, Letizia
• Is Part Of: Natural product research. Volume 30:Issue 4(2016)
• Page Start: 412
• Page End: 418
• Publication Date: 2016-02-16
• Subjects: Pseudomonas syringae pv. actinidiae -- kiwifruit canker -- exopolymeric material -- SEM -- essential oils -- synergism; Natural products -- Periodicals; Natural products -- Research -- Periodicals; Biological Factors -- Periodicals; Biological Products -- Periodicals; 547
• DOI: 10.1080/14786419.2015.1022543
• Languages: English
• ISSNs: 1478-6419

Abstract

Abstract : Pseudomonas syringae pv. actinidiae (PSA) is the causal agent of bacterial canker of kiwifruit. It is very difficult to treat pandemic disease. The prolonged treatment with antibiotics, has resulted in failure and resistance and alternatives to conventional antimicrobial therapy are needed. The aim of our study was to analyse the phenotypic characteristics of PSA, identify new substances from natural source i.e. essential oils (EOs) able to contain the kiwifruit canker and investigate their potential use when utilised in combination. Specially, we investigated the morphological differences of PSA isolates by scanning electron microscope, and the synergic action of different EOs by time-kill and checkerboard methods. Our results demonstrated that PSA was able to produce extracellular polysaccharides when it was isolated from trunk, and, for the first time, that it was possible to kill PSA with a mixture of EOs after 1 h of exposition. We hypothesise on its potential use in agriculture. Abstract :