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Protection of spruce seedlings against pine weevil attacks by treatment of seeds or seedlings with nicotinamide, nicotinic acid and jasmonic acid
KTH.
Högskolan Dalarna, Akademin Industri och samhälle, Skog- och träteknik.
KTH.
Högskolan Dalarna, Akademin Industri och samhälle, Skog- och träteknik.
Vise andre og tillknytning
2016 (engelsk)Inngår i: Forestry (London), ISSN 0015-752X, E-ISSN 1464-3626, Vol. 89, nr 2, s. 127-135Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Sustainable methods are required to protect newly planted tree seedlings from insect herbivore attack. To this end, here Norway spruce (Picea abies (L.) Karst.) seeds were treated with 2.5 mM nicotinamide (NIC), 2.5 mM nicotinic acid (NIA), 3 mM jasmonic acid (JA) or 0.2 mM 5-azacytidine (5-Aza), and 6-month-old seedlings grown from these seeds were planted at a reforestation area in central Sweden. Attack by pine weevils (Hylobius abietis) was reduced by 50 per cent by NIC treatment, 62.5 per cent by JA treatment and 25 per cent by 5-Aza treatment, when compared with seedlings grown from untreated seeds. Watering 18-month-old spruce seedlings with 2 mM NIC or 2 mM NIA did reduce attack during the first season in the field by 40 and 53 per cent, respectively, compared with untreated plants. Girdling was also reduced by the different treatments. Analysis of conifer seedlings treated with 5-Aza points at a possible involvement of epigenetic mechanisms in this defensive capacity. This is supported by a reduced level of DNA methylation in the needles of young spruce seedlings grown in a greenhouse from NIC-treated seeds. Seed treatment for seedling defense potentiation is simple, inexpensive and also a new approach for forestry with many potential applications.

sted, utgiver, år, opplag, sider
Oxford University Press, 2016. Vol. 89, nr 2, s. 127-135
Emneord [en]
Coniferophyta; Curculionidae; Hexapoda; Hylobius abietis; Picea; Picea abies
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö
Identifikatorer
URN: urn:nbn:se:du-19843DOI: 10.1093/forestry/cpv040ISI: 000370970000003Scopus ID: =2-s2.0-85032069291OAI: oai:DiVA.org:du-19843DiVA, id: diva2:866030
Tilgjengelig fra: 2015-10-30 Laget: 2015-10-30 Sist oppdatert: 2017-11-06bibliografisk kontrollert

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