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Clone specific chemical defense responses in Norway spruce to infestations by two pathogenic fungi
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. (Ekologisk kemi)ORCID iD: 0000-0003-4970-8352
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. (Ekologisk kemi)
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2016 (English)In: Forest Pathology, ISSN 1437-4781, E-ISSN 1439-0329Article in journal (Other academic) Submitted
Abstract [en]

Heterobasidion parviporum (Hp) were investigated using four clones of Norway spruce (Picea abies) with different susceptibility to Heterobasidion sp. Eight year old trees were inoculated with Ep and Hp to minimize the variation due to environment. After three weeks the bark tissue at the upper border of the inoculation hole were extracted with hexane and analyzed by GC-MS. Both treatment and clonal differences were found based on induced mono-, sesqui- and diterpenes. In addition, the Hp produced toxin, fomanoxin, was identified in lowest amount in the most Hp susceptible clone. The clonal trees seem to use different defense strategies towards the two fungi. One of the clones was able to induce strong chemical defense against both fungi, one clone induced chemical defense only against Ep and the most susceptible clone exhibited the least capacity to produce an effective defense against Ep and Hp. Two diterpenes were found to be distinctly different between clones with different susceptibilities, which can be used as chemical indication of Norway spruce resistance against fungi.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2016.
Keyword [en]
Endoconidiophora polonica, Ceratocystis, Heterobasidion parviporum, Picea abies, clone, induced response, terpenes
National Category
Ecology Organic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-187876OAI: oai:DiVA.org:kth-187876DiVA: diva2:931793
Note

QC 20160531

Available from: 2016-05-30 Created: 2016-05-30 Last updated: 2017-06-30Bibliographically approved

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CiteExportLink to record
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Citation style
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