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dc.contributor.authorTulik, Mirela
dc.contributor.authorZakrzewski, Jacek
dc.contributor.authorAdamczyk, Jacek
dc.contributor.authorTereba, Anna
dc.contributor.authorYaman, Barbaros
dc.contributor.authorNowakowska, Justyna A.
dc.date.accessioned2019-12-06T06:15:06Z
dc.date.available2019-12-06T06:15:06Z
dc.date.issued2017-04-20
dc.identifier.citationTulik M, Zakrzewski J, Adamczyk J, Tereba A, Yaman B, Nowakowska JA (2017). Anatomical and genetic aspects of ash dieback: a look at the wood structure. iForest 10: 522-528. – doi: 10.3832/ifor2080-010en_US
dc.identifier.urihttp://www.sisef.it/iforest/abstract/?id=ifor2080-010
dc.identifier.urihttp://hdl.handle.net/11772/2040
dc.description.abstractPathogen diseases are increasingly threatening forest trees under the current climate change, causing a remarkable decrease in the stability of forest eco systems. Ash (Fraxinus excelsior L.) dieback due to Hymenoscyphus fraxineus has been noted in Poland since 1992 and has spread over many European countries. The aim of this study was to test the hypothesis that ash trees af fected by dieback could exhibit a reduced vessel size and density along the trunk, as well as a lowered width of annual wood rings, leading to the weaken ing of water transport towards the crown. Dead and dying ash trees were sam pled in a forest district severely affected by ash decline in southern Poland. Wood samples were collected at different height along the trunk and several wood anatomical characteristics of annual tree rings over the period 2002- 2011 were examined. Dead trees showed a stronger reduction in radial growth than dying trees over the period considered. Moreover, the diameter of ves sels increased from the crown to the base in both dead and dying trees, while the density decreased. Significant differences between dead and dying trees were detected in size and density of vessels in the period analyzed, as well as in the width of annual rings. DNA extracted from wood samples was analyzed using SSR markers and the main genetic parameters of dead and dying trees were estimated, finding similar levels of polymorphism and only slight non-sig nificant differences between the two health groups. Our results are consistent with the hypothesis that pathogens could disrupt the hormonal control of wood formation by interfering with the polar auxin transport, progressively leading to the death of ash trees.en_US
dc.language.isoengen_US
dc.publisheriForesten_US
dc.relation.isversionof10.3832/ifor2080-010en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAsh treesen_US
dc.subjectTree declineen_US
dc.subjectMicrosatellites markersen_US
dc.subjectWooden_US
dc.subjectOrmancılıken_US
dc.subjectAhşapen_US
dc.subjectForesten_US
dc.titleAnatomical and genetic aspects of ash dieback: a look at the wood structureen_US
dc.typearticleen_US
dc.relation.journali F o r e s t - Biogeosciences and Forestryen_US
dc.contributor.departmentBartın Üniversitesi, Orman Fakültesi, Orman Mühendisliği Bölümüen_US
dc.identifier.volume10en_US
dc.identifier.startpage522en_US
dc.identifier.endpage528en_US


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