Role of benzoic acid and lettucenin A in the defense response of lettuce against soil-borne pathogens

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dc.contributor.authorWindisch, Saskia
dc.contributor.authorWalter, Anja
dc.contributor.authorMoradtalab, Narges
dc.contributor.authorWalker, Frank
dc.contributor.authorHöglinger, Birgit
dc.contributor.authorEl-Hasan, Abbas
dc.contributor.authorLudewig, Uwe
dc.contributor.authorNeumann, Günter
dc.contributor.authorGrosch, Rita
dc.date.accessioned2024-11-06T10:17:35Z
dc.date.available2024-11-06T10:17:35Z
dc.date.issued2021de
dc.description.abstractSoil-borne pathogens can severely limit plant productivity. Induced defense responses are plant strategies to counteract pathogen-related damage and yield loss. In this study, we hypothesized that benzoic acid and lettucenin A are involved as defense compounds against Rhizoctonia solani and Olpidium virulentus in lettuce. To address this hypothesis, we conducted growth chamber experiments using hydroponics, peat culture substrate and soil culture in pots and minirhizotrons. Benzoic acid was identified as root exudate released from lettuce plants upon pathogen infection, with pre-accumulation of benzoic acid esters in the root tissue. The amounts were sufficient to inhibit hyphal growth of R. solani in vitro (30%), to mitigate growth retardation (51%) and damage of fine roots (130%) in lettuce plants caused by R. solani, but were not able to overcome plant growth suppression induced by Olpidium infection. Additionally, lettucenin A was identified as major phytoalexin, with local accumulation in affected plant tissues upon infection with pathogens or chemical elicitation (CuSO4) and detected in trace amounts in root exudates. The results suggest a two-stage defense mechanism with pathogen-induced benzoic acid exudation initially located in the rhizosphere followed by accumulation of lettucenin A locally restricted to affected root and leaf tissues.en
dc.identifier.swb1776346335
dc.identifier.urihttps://hohpublica.uni-hohenheim.de/handle/123456789/16881
dc.identifier.urihttps://doi.org/10.3390/plants10112336
dc.language.isoengde
dc.rights.licensecc_byde
dc.source2223-7747de
dc.sourcePlants; Vol. 10, No. 11 (2021) 2336de
dc.subjectLettuce
dc.subjectRoot exudates
dc.subjectPlant health
dc.subjectPhytoalexin
dc.subjectLettucenin
dc.subjectBenzoic acid
dc.subjectDefense reaction
dc.subject.ddc570
dc.titleRole of benzoic acid and lettucenin A in the defense response of lettuce against soil-borne pathogensen
dc.type.diniArticle
dcterms.bibliographicCitationPlants, 10 (2021), 11, 2336. https://doi.org/10.3390/plants10112336. ISSN: 2223-7747
dcterms.bibliographicCitation.issn2223-7747
dcterms.bibliographicCitation.issue11
dcterms.bibliographicCitation.journaltitlePlants
dcterms.bibliographicCitation.volume10
local.export.bibtex@article{Windisch2021, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16881}, doi = {10.3390/plants10112336}, author = {Windisch, Saskia and Walter, Anja and Moradtalab, Narges et al.}, title = {Role of Benzoic Acid and Lettucenin A in the Defense Response of Lettuce against Soil-Borne Pathogens}, journal = {Plants}, year = {2021}, }
local.export.bibtexAuthorWindisch, Saskia and Walter, Anja and Moradtalab, Narges et al.
local.export.bibtexKeyWindisch2021
local.export.bibtexType@article

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