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Resistance to Neonectria ditissima in apple: insights from metabolomics and lipidomics analyses
Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Umeå University, Faculty of Science and Technology, Department of Plant Physiology.
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2023 (English)In: Xxxi international horticultural congress (ihc2022): International symposium on breeding and effective use of biotechnology and molecular tools in horticultural crops / [ed] V. Bus; M. Causse, International Society for Horticultural Science , 2023, p. 329-335Conference paper, Published paper (Refereed)
Abstract [en]

European canker, caused by the necrotrophic fungus Neonectria ditissima, is the most serious disease in apple production in Sweden. The disease is favored by a relatively cool and rainy climate. The canker damages have a significant economic impact due to reduced bearing surface and increased orchard management costs. The possibilities for chemical and biological control are very limited. Therefore, directed breeding for new resistant cultivars is urgently needed. Knowledge of inheritance of canker resistance and understanding of molecular mechanisms involved in resistant and susceptible responses to fungal attacks would facilitate breeding. In this study, we evaluated the tempo-spatial differences in plant-pathogen interactions in a set of partially resistant and susceptible cultivars by conducting metabolomic and lipidomic analyses. The major trends in metabolomics and lipidomic profiles were common among cultivars, irrespective of the degree of susceptibility. Several metabolites and lipids varied with time point and cultivar under N. ditissima infection. Putative key metabolites such as suberic acid and jasmonic acid were upregulated in all cultivars upon infection. Additionally, several lipids exhibited changes 30 to 45 days post-inoculation. Thus, the approach used seems to have resulted in a rich data set to be further analyzed in light of ongoing QTL-mapping efforts.

Place, publisher, year, edition, pages
International Society for Horticultural Science , 2023. p. 329-335
Series
Acta Horticulturae, ISSN 05677572, E-ISSN 24066168 ; 1362
Keywords [en]
fruit tree canker, Malus × domestica, metabolites, susceptibility
National Category
Genetics and Breeding in Agricultural Sciences Plant Biotechnology
Identifiers
URN: urn:nbn:se:umu:diva-208059DOI: 10.17660/ActaHortic.2023.1362.44Scopus ID: 2-s2.0-85153494693ISBN: 978-94-62613-61-4 (print)OAI: oai:DiVA.org:umu-208059DiVA, id: diva2:1764882
Conference
XXXI International Horticultural Congress (IHC2022), International Symposium on Breeding and Effective Use of Biotechnology and Molecular Tools in Horticultural Crops, Angers, France, august 14-20, 2022.
Available from: 2023-06-09 Created: 2023-06-09 Last updated: 2023-11-07Bibliographically approved

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Johansson, Annika I.

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