Ultrastructural characterisation of interactions between Arabidopsis thaliana and Albugo candida

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dc.authoridSOYLU, Soner/0000-0003-1002-8958
dc.authoridSoylu, Emine Mine/0000-0001-5961-0848
dc.contributor.authorSoylu, S
dc.contributor.authorKeshavarzi, M
dc.contributor.authorBrown, I
dc.contributor.authorMansfield, JW
dc.date.accessioned2024-09-18T20:02:36Z
dc.date.available2024-09-18T20:02:36Z
dc.date.issued2003
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractCellular reactions of Arabidopsis accessions to Albugo candida isolated from Arabidopsis thaliana or Capsella bursa-pastoris (Shepherd's purse) are described. On susceptible and resistant accessions, successful penetration was observed through stomatal pores and into mesophyll or epidermal cells. Compatible interactions between susceptible accessions, Weiningen (Wei-1), Wassilewskija (Ws-0) and Ws-eds1, and virulent isolates Acem1 (from Arabidopsis) and Ac3 (from Shepherd's purse) were characterised by the rapid spread of intercellular hyphae, a high frequency of haustorium formation in mesophyll cells and the production of sporangia in the absence of host cell necrosis. The symptoms caused by the isolate Ac3 on accession Keswick (Ksk)-2 indicated only partial compatibility because, although sporulation occurred, pathogen colonisation was significantly restricted. The major host cell response observed in this intermediate interaction was the striking deposition of ensheathing material containing callose around haustoria. Location of callose was confirmed using immunocytochemistry. The interactions Acem1/Ksk-1 or -2 and Ac3/Ksk-1 were highly incompatible with no sporulation observed. Phenotypes were differentiated based on the occurrence of necrotic flecks (FN) as observed with Acem1 in Ksk-2 and Ac3 in Ksk-1, and flecking and yellowing (FYN) as found in the Acem1/Ksk-1 interaction. The severity of the flecking reaction depended on the number of plant cells affected. The FN phenotype was characterised by the restriction of fungal growth after penetration of epidermal cells. In the FYN phenotype, pathogen growth was also restricted close to sites of penetration but extended into mesophyll tissue. The main features of incompatibility, the hypersensitive reaction and deposition of callose at infection sites, were observed soon after the formation of haustoria. Ultrastructural studies with cotyledons undergoing FN or FYN phenotypes revealed cells undergoing the HR prior to the death of Albugo haustoria and intercellular hyphae, suggesting that plant cell death was the cause or closely associated with the cause of restricted pathogen development in the highly resistant interactions. (C) 2004 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.pmpp.2003.12.002
dc.identifier.endpage211en_US
dc.identifier.issn0885-5765
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-1942457311en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage201en_US
dc.identifier.urihttps://doi.org/10.1016/j.pmpp.2003.12.002
dc.identifier.urihttps://hdl.handle.net/20.500.12483/7899
dc.identifier.volume63en_US
dc.identifier.wosWOS:000221193100004en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAcademic Press Ltd Elsevier Science Ltden_US
dc.relation.ispartofPhysiological and Molecular Plant Pathologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectArabidopsisen_US
dc.subjectAlbugoen_US
dc.subjectdisease resistanceen_US
dc.subjectcompatible/incompatible interactionen_US
dc.subjectcalloseen_US
dc.subjecthypersensitive reactionen_US
dc.subjectultrastructureen_US
dc.titleUltrastructural characterisation of interactions between Arabidopsis thaliana and Albugo candidaen_US
dc.typeArticleen_US

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