Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis
The 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 convent...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
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National Academy of Sciences
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/66044 |
| _version_ | 1855539627349245952 |
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| author | Hoelscher, D. Suganthagunthalam, D. Alexandrov, T. |
| author_browse | Alexandrov, T. Hoelscher, D. Suganthagunthalam, D. |
| author_facet | Hoelscher, D. Suganthagunthalam, D. Alexandrov, T. |
| author_sort | Hoelscher, D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The 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. |
| format | Journal Article |
| id | CGSpace66044 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | National Academy of Sciences |
| publisherStr | National Academy of Sciences |
| record_format | dspace |
| spelling | CGSpace660442025-12-08T09:54:28Z Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis Hoelscher, D. Suganthagunthalam, D. Alexandrov, T. bananas defence mechanisms musa parasites pest resistance pests of plants plant nematodes radopholus similis plant protection phytoalexins plant parasitic nematodes plantains The 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. 2014-01-07 2015-05-13T13:59:51Z 2015-05-13T13:59:51Z Journal Article https://hdl.handle.net/10568/66044 en Open Access application/pdf National Academy of Sciences Hölscher, 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 |
| spellingShingle | bananas defence mechanisms musa parasites pest resistance pests of plants plant nematodes radopholus similis plant protection phytoalexins plant parasitic nematodes plantains Hoelscher, D. Suganthagunthalam, D. Alexandrov, T. Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis |
| title | Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis |
| title_full | Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis |
| title_fullStr | Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis |
| title_full_unstemmed | Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis |
| title_short | Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis |
| title_sort | phenalenone type phytoalexins mediate resistance of banana plants musa spp to the burrowing nematode radopholus similis |
| topic | bananas defence mechanisms musa parasites pest resistance pests of plants plant nematodes radopholus similis plant protection phytoalexins plant parasitic nematodes plantains |
| url | https://hdl.handle.net/10568/66044 |
| work_keys_str_mv | AT hoelscherd phenalenonetypephytoalexinsmediateresistanceofbananaplantsmusaspptotheburrowingnematoderadopholussimilis AT suganthagunthalamd phenalenonetypephytoalexinsmediateresistanceofbananaplantsmusaspptotheburrowingnematoderadopholussimilis AT alexandrovt phenalenonetypephytoalexinsmediateresistanceofbananaplantsmusaspptotheburrowingnematoderadopholussimilis |