Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis

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dc.creatorHoelscher, D.
dc.creatorSuganthagunthalam, D.
dc.creatorAlexandrov, T.
dc.date2014-01-07
dc.date2015-05-13T13:59:51Z
dc.date2015-05-13T13:59:51Z
dc.date.accessioned2026-06-27T13:53:47Z
dc.descriptionThe global yield of bananas, one of the most important food crops is severely hampered by parasites, such as nematodes, which cause yield losses up to 75%. Plant nematode interactions of two banana cultivars differing in susceptibility to Radopholus similis were investigated by combining the conventional and spatially resolved analytical techniques 1H NMR spectroscopy, matrix-free UV-laser desorption/ionization mass spectrometric imaging, and Raman microspectroscopy. This innovative combination of analytical techniques was applied to isolate, identify, and locate the banana-specific type of phytoalexins, phenylphenalenones, in the R. similis-caused lesions of the plants. The striking antinematode activity of the phenylphenalenone anigorufone, its ingestion by the nematode, and its subsequent localization in lipid droplets within the nematode is reported. The importance of varying local concentrations of these specialized metabolites in infected plant tissues, their involvement in the plant's defense system, and derived strategies for improving banana resistance are highlighted.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/66044
dc.identifier.urihttp://hdl.handle.net/123456789/69163
dc.languageen
dc.publisherNational Academy of Sciences
dc.rightsOpen Access
dc.sourceHölscher, D., Dhakshinamoorthy, S., Alexandrov, T., Becker, M., Bretschneider, T., Buerkert, A., Crecelius, A. C., De Waele, D., Elsen, A., Heckel, D. G., Heklau, H., Hertweck, C., Kai, M., Knop, K., Krafft, C., Maddula, R. K., Matthäus, C., Popp, J., Schneider, B., … Swennen, R. L. (2013). Phenalenone-type phytoalexins mediate resistance of banana plants ( Musa spp.) to the burrowing nematode Radopholus similis. In Proceedings of the National Academy of Sciences (Vol. 111, Issue 1, pp. 105–110). Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.131416811
dc.subjectbananas
dc.subjectdefence mechanisms
dc.subjectmusa
dc.subjectparasites
dc.subjectpest resistance
dc.subjectpests of plants
dc.subjectplant nematodes
dc.subjectradopholus similis
dc.subjectplant protection
dc.subjectphytoalexins
dc.subjectplant parasitic nematodes
dc.subjectplantains
dc.titlePhenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis
dc.typeJournal Article

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