İnduction of phytoalexin accumulation in broad bean (Vicia faba L.) cotyledons following treatments with biotic and abiotic elicitors

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dc.contributor.authorSomer Soylu
dc.contributor.authorMark H. Bennett
dc.contributor.authorJohn W. Mansfıeld
dc.date.accessioned2019-07-16T15:47:37Z
dc.date.available2019-07-16T15:47:37Z
dc.date.issued2002
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractBroad bean (Vicia faba) cotyledons that were inoculated artificially with fungal pathogens or exposed to various abiotic agents were analysed for phytoalexin production. Biotic elicitors, such as Botrytis cinerea and B. allii, and abiotic elicitors, such as ultraviolet (UV) radiation (254 nm) and freezing-thawing, were used to induce phytoalexin accumulation. Wyerone and other wyerone derivatives were the major phytoalexins responding in broad bean cotyledons. The quantities of wyerone within elicitor-treated tissues were examined by thin layer chromatography. The highest amount of wyerone was induced by B. cinerea (943 mg/g fresh weight). Treatment of cotyledons with UV radiation (452 mg/g f.wt), B. alli (325 mg/g f.wt) and freezing-thawing (288 mg/g f.wt) also caused considerable activation of the phytoalexin synthesis. Cell necrosis and wyerone accumulation were closely associated, and the highest concentration of wyerone was in tissue bearing brown lesions. Only very low concentrations of wyerone accumulated at sites of mechanical damage. The results indicate that the presence of both damaged and healthy tissues is necessary for phytoalexin production.en_US
dc.description.abstractBroad bean (Vicia faba) cotyledons that were inoculated artificially with fungal pathogens or exposed to various abiotic agents were analysed for phytoalexin production. Biotic elicitors, such as Botrytis cinerea and B. allii, and abiotic elicitors, such as ultraviolet (UV) radiation (254 nm) and freezing-thawing, were used to induce phytoalexin accumulation. Wyerone and other wyerone derivatives were the major phytoalexins responding in broad bean cotyledons. The quantities of wyerone within elicitor-treated tissues were examined by thin layer chromatography. The highest amount of wyerone was induced by B. cinerea (943 mg/g fresh weight). Treatment of cotyledons with UV radiation (452 mg/g f.wt), B. alli (325 mg/g f.wt) and freezing-thawing (288 mg/g f.wt) also caused considerable activation of the phytoalexin synthesis. Cell necrosis and wyerone accumulation were closely associated, and the highest concentration of wyerone was in tissue bearing brown lesions. Only very low concentrations of wyerone accumulated at sites of mechanical damage. The results indicate that the presence of both damaged and healthy tissues is necessary for phytoalexin production.en_US
dc.identifier.endpage348en_US
dc.identifier.issn1300-011x
dc.identifier.issue6en_US
dc.identifier.startpage343en_US
dc.identifier.urihttps://trdizin.gov.tr/publication/paper/detail/TWprd09UZzQ=
dc.identifier.urihttps://hdl.handle.net/20.500.12483/680
dc.identifier.volume26en_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.relation.ispartofTurkish Journal of Agriculture and Forestryen_US
dc.relation.publicationcategoryDiğeren_US]
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectOrman Mühendisliğien_US
dc.titleİnduction of phytoalexin accumulation in broad bean (Vicia faba L.) cotyledons following treatments with biotic and abiotic elicitorsen_US
dc.title.alternativeBiyotik ve abiyotik uyarıcılar ile muamele edilen bakla kotiledonlarında (Vicia faba L.) fitoaleksin birikiminin teşvik edilmesien_US
dc.typeOtheren_US

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