Comparison of strains of Lysobacter enzymogenes and PGPR for induction of resistance against Bipolaris sorokiniana in tall fescue

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dc.authorscopusid6507884782
dc.authorscopusid7006472949
dc.contributor.authorKilic-Ekici, Ozlem
dc.contributor.authorYuen, Gary Y.
dc.date.accessioned2024-09-19T15:41:23Z
dc.date.available2024-09-19T15:41:23Z
dc.date.issued2004
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractLysobacter enzymogenes C3, the only biocontrol agent previously known to induce resistance in tall fescue against Bipolaris sorokiniana, was compared in growth chamber experiments with other strains of L. enzymogenes, strains of plant growth promoting rhizobacteria (PGPR) that induce systemic resistance in dicot plants, and the synthetic elicitor 1,2,3-benzothiadiazole-7-thiocarboxylic acid-S-methyl-ester (BTH). The treatments were evaluated for induction of localized or systemic resistance against B. sorokiniana when applied to leaves and roots. In addition, the effects of induced resistance on pathogen conidial germination on the phylloplane were assessed. None of the bacterial or chemical treatments induced systemic resistance when applied to a leaf. Strains of L. enzymogenes differed in their ability to cause localized disease inhibition following foliage treatment and to induce systemic resistance in leaves when applied to roots. In contrast to C3, two other strains of L. enzymogenes were ineffective in inducing systemic resistance. PGPR strains varied in effectiveness in causing localized disease inhibition when applied to leaves. Most of the bacterial strains increased peroxidase activity in the treated leaves, providing evidence that localized disease inhibition may have been plant mediated. The involvement of localized induced resistance was confirmed in P. fluorescens WCS417r, which did inhibit B. sorokiniana conidial germination or hyphal growth in vitro. Soil drenches with nearly all PGPR strains resulted in systemic resistance in leaves, but the treatments varied as to the timing and strength of induced systemic resistance. BTH induced localized resistance when applied to leaves but did not activate resistance in leaves when applied to roots. All cases of induced resistance were associated with an inhibition of conidial germination on leaf surfaces and, thus, this reaction appears to be a hallmark of induced resistance in the B. sorokiniana-tall fescue pathosystem. © 2004 Elsevier Inc. All rights reserved.en_US
dc.identifier.doi10.1016/j.biocontrol.2004.01.014
dc.identifier.endpage455en_US
dc.identifier.issn1049-9644
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-2342576315en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage446en_US
dc.identifier.urihttps://doi.org/10.1016/j.biocontrol.2004.01.014
dc.identifier.urihttps://hdl.handle.net/20.500.12483/14228
dc.identifier.volume30en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAcademic Press Inc.en_US
dc.relation.ispartofBiological Controlen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAcibenzolar-S-methylen_US
dc.subjectBacillus amyloliquefaciansen_US
dc.subjectBacillus pumilusen_US
dc.subjectBacillus subtilisen_US
dc.subjectBenzothiadiazoleen_US
dc.subjectBiological controlen_US
dc.subjectBipolaris leaf spoten_US
dc.subjectBipolaris sorokinianaen_US
dc.subjectFestuca aurundinacearen_US
dc.subjectInduced systemic resistanceen_US
dc.subjectLysobacter enzymogenesen_US
dc.titleComparison of strains of Lysobacter enzymogenes and PGPR for induction of resistance against Bipolaris sorokiniana in tall fescueen_US
dc.typeArticleen_US

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