Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica
Striga hermonthica is the most widespread and destructive plant parasite infesting maize and other major crops in sub-Saharan Africa where it causes severe yield losses and threatens food security. Several tolerant maize lines supporting reduced S. hermonthica emergence have been deployed. However,...
| Autores principales: | , , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2023
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/137382 |
| _version_ | 1855532704191217664 |
|---|---|
| author | Marcotrigiano, R.A. Carluccio, A.V. Unachukwu, N. Adeoti, S.R. Abdulsalam, T. Gedil, M. Menkir, A. Gisel, A. Stavolone, L. |
| author_browse | Abdulsalam, T. Adeoti, S.R. Carluccio, A.V. Gedil, M. Gisel, A. Marcotrigiano, R.A. Menkir, A. Stavolone, L. Unachukwu, N. |
| author_facet | Marcotrigiano, R.A. Carluccio, A.V. Unachukwu, N. Adeoti, S.R. Abdulsalam, T. Gedil, M. Menkir, A. Gisel, A. Stavolone, L. |
| author_sort | Marcotrigiano, R.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Striga hermonthica is the most widespread and destructive plant parasite infesting maize and other major crops in sub-Saharan Africa where it causes severe yield losses and threatens food security. Several tolerant maize lines supporting reduced S. hermonthica emergence have been deployed. However, the molecular bases of such resistance are yet poorly understood. Based on a time course comparative gene expression analysis between susceptible and resistant maize lines we have confirmed resistance mechanisms known to be activated upon plant parasite infestation and identified potential novel players worth further investigation e.g. iron homeostasis and mitochondrial respiration-related genes. Most intriguingly, we show a previously unknown strategy of maize post-attachment resistance based on DIMBOA accumulation in S. hermonthica-infested maize roots. S. hermonthica infestation triggers positive regulation of gene expression in the hydroxamic acid (HA) pathway culminating with an accumulation of benzoxazinoids (BX), known for their antifeedant, insecticidal, antimicrobial, and allelopathic activities. We demonstrate that HA root content is positively correlated with S. hermonthica resistance in the resistant parent and its progenies and in unrelated maize lines. Downregulation of HA genes causes increased susceptibility to S. hermonthica infestation in loss-of-function maize mutants. While the mechanism of BX action in parasitic plant resistance is yet to be uncovered, the potential of this discovery for developing effective control and breeding strategies is enormous. |
| format | Journal Article |
| id | CGSpace137382 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1373822025-11-11T10:38:20Z Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica Marcotrigiano, R.A. Carluccio, A.V. Unachukwu, N. Adeoti, S.R. Abdulsalam, T. Gedil, M. Menkir, A. Gisel, A. Stavolone, L. hydroxamic acids striga hermonthica maize sub-saharan africa Striga hermonthica is the most widespread and destructive plant parasite infesting maize and other major crops in sub-Saharan Africa where it causes severe yield losses and threatens food security. Several tolerant maize lines supporting reduced S. hermonthica emergence have been deployed. However, the molecular bases of such resistance are yet poorly understood. Based on a time course comparative gene expression analysis between susceptible and resistant maize lines we have confirmed resistance mechanisms known to be activated upon plant parasite infestation and identified potential novel players worth further investigation e.g. iron homeostasis and mitochondrial respiration-related genes. Most intriguingly, we show a previously unknown strategy of maize post-attachment resistance based on DIMBOA accumulation in S. hermonthica-infested maize roots. S. hermonthica infestation triggers positive regulation of gene expression in the hydroxamic acid (HA) pathway culminating with an accumulation of benzoxazinoids (BX), known for their antifeedant, insecticidal, antimicrobial, and allelopathic activities. We demonstrate that HA root content is positively correlated with S. hermonthica resistance in the resistant parent and its progenies and in unrelated maize lines. Downregulation of HA genes causes increased susceptibility to S. hermonthica infestation in loss-of-function maize mutants. While the mechanism of BX action in parasitic plant resistance is yet to be uncovered, the potential of this discovery for developing effective control and breeding strategies is enormous. 2023-11 2024-01-09T10:34:16Z 2024-01-09T10:34:16Z Journal Article https://hdl.handle.net/10568/137382 en Open Access application/pdf Elsevier Marcotrigiano, A.R., Carluccio, A.V., Unachukwu, N., Adeoti, S.R., Abdulsalam, T., Gedil, M., ... & Stavolone, L. (2023). Hydroxamic acids: New players in the multifactorial mechanisms of maize resistance to Striga hermonthica. Plant Physiology and Biochemistry, 204:108134, 1-10. |
| spellingShingle | hydroxamic acids striga hermonthica maize sub-saharan africa Marcotrigiano, R.A. Carluccio, A.V. Unachukwu, N. Adeoti, S.R. Abdulsalam, T. Gedil, M. Menkir, A. Gisel, A. Stavolone, L. Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica |
| title | Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica |
| title_full | Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica |
| title_fullStr | Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica |
| title_full_unstemmed | Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica |
| title_short | Hydroxamic acids: new players in the multifactorial mechanisms of maize resistance to Striga hermonthica |
| title_sort | hydroxamic acids new players in the multifactorial mechanisms of maize resistance to striga hermonthica |
| topic | hydroxamic acids striga hermonthica maize sub-saharan africa |
| url | https://hdl.handle.net/10568/137382 |
| work_keys_str_mv | AT marcotrigianora hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT carluccioav hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT unachukwun hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT adeotisr hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT abdulsalamt hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT gedilm hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT menkira hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT gisela hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica AT stavolonel hydroxamicacidsnewplayersinthemultifactorialmechanismsofmaizeresistancetostrigahermonthica |