Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive
The effect of mineral nutrition on wilt diseases has been previously reported in many herbaceous hosts, though such an effect on Verticillium wilt in olive (<i>Olea europaea</i> L.; VWO), caused by <i>Verticillium dahliae</i>, is still uncertain. Field observations reveal tha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Journal of Fungi |
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| Online Access: | https://www.mdpi.com/2309-608X/8/2/139 |
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| author | Ana López-Moral Carlos Agustí-Brisach Cristina Ruiz-Blancas Begoña I. Antón-Domínguez Esteban Alcántara Antonio Trapero |
| author_facet | Ana López-Moral Carlos Agustí-Brisach Cristina Ruiz-Blancas Begoña I. Antón-Domínguez Esteban Alcántara Antonio Trapero |
| author_sort | Ana López-Moral |
| collection | DOAJ |
| description | The effect of mineral nutrition on wilt diseases has been previously reported in many herbaceous hosts, though such an effect on Verticillium wilt in olive (<i>Olea europaea</i> L.; VWO), caused by <i>Verticillium dahliae</i>, is still uncertain. Field observations reveal that nitrogen (N) excess or imbalances of N-potassium (K) favour VWO epidemics. However, this has yet to be demonstrated. Thus, the aim of this study was to evaluate the influences of nutritional imbalances of N and K in <i>V. dahliae</i> infection of olive. To this end, adjusted treatments with N excess (↑N+↑Na), K deficiency (↓K) and their combination (↑N+↑Na+↓K) were evaluated on the viability of <i>V. dahliae</i> microsclerotia (MS), as well as on disease development in olive plants. In parallel, the potential indirect effect of the treatments on the viability of conidia and MS of <i>V. dahliae</i> was evaluated through the stimuli of root exudates. Treatments ↑N+↑Na and ↑N+↑Na+↓K decreased MS germination and disease progress, whereas ↓K significantly increased both parameters. Root exudates from treated plants increased the conidia germination of <i>V. dahliae</i> but reduced the MS germination. The results of this study will be the basis for planning further research towards a better understanding of the effect of mineral nutrition on VWO. |
| first_indexed | 2024-03-09T21:38:22Z |
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| institution | Directory Open Access Journal |
| issn | 2309-608X |
| language | English |
| last_indexed | 2024-03-09T21:38:22Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Fungi |
| spelling | doaj.art-9ae6cee91d8b41bc8dcdf418a1edb02a2023-11-23T20:37:27ZengMDPI AGJournal of Fungi2309-608X2022-01-018213910.3390/jof8020139Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in OliveAna López-Moral0Carlos Agustí-Brisach1Cristina Ruiz-Blancas2Begoña I. Antón-Domínguez3Esteban Alcántara4Antonio Trapero5Departamento de Agronomía, María de Maeztu Unit of Excellence 2020-23, Campus de Rabanales, Universidad de Córdoba, Edif. C4, 14071 Córdoba, SpainDepartamento de Agronomía, María de Maeztu Unit of Excellence 2020-23, Campus de Rabanales, Universidad de Córdoba, Edif. C4, 14071 Córdoba, SpainDepartamento de Agronomía, María de Maeztu Unit of Excellence 2020-23, Campus de Rabanales, Universidad de Córdoba, Edif. C4, 14071 Córdoba, SpainDepartamento de Agronomía, María de Maeztu Unit of Excellence 2020-23, Campus de Rabanales, Universidad de Córdoba, Edif. C4, 14071 Córdoba, SpainDepartamento de Agronomía, María de Maeztu Unit of Excellence 2020-23, Campus de Rabanales, Universidad de Córdoba, Edif. C4, 14071 Córdoba, SpainDepartamento de Agronomía, María de Maeztu Unit of Excellence 2020-23, Campus de Rabanales, Universidad de Córdoba, Edif. C4, 14071 Córdoba, SpainThe effect of mineral nutrition on wilt diseases has been previously reported in many herbaceous hosts, though such an effect on Verticillium wilt in olive (<i>Olea europaea</i> L.; VWO), caused by <i>Verticillium dahliae</i>, is still uncertain. Field observations reveal that nitrogen (N) excess or imbalances of N-potassium (K) favour VWO epidemics. However, this has yet to be demonstrated. Thus, the aim of this study was to evaluate the influences of nutritional imbalances of N and K in <i>V. dahliae</i> infection of olive. To this end, adjusted treatments with N excess (↑N+↑Na), K deficiency (↓K) and their combination (↑N+↑Na+↓K) were evaluated on the viability of <i>V. dahliae</i> microsclerotia (MS), as well as on disease development in olive plants. In parallel, the potential indirect effect of the treatments on the viability of conidia and MS of <i>V. dahliae</i> was evaluated through the stimuli of root exudates. Treatments ↑N+↑Na and ↑N+↑Na+↓K decreased MS germination and disease progress, whereas ↓K significantly increased both parameters. Root exudates from treated plants increased the conidia germination of <i>V. dahliae</i> but reduced the MS germination. The results of this study will be the basis for planning further research towards a better understanding of the effect of mineral nutrition on VWO.https://www.mdpi.com/2309-608X/8/2/139mineral nutritionnitrogen<i>Olea europaea</i>potassiumVerticillium wilt |
| spellingShingle | Ana López-Moral Carlos Agustí-Brisach Cristina Ruiz-Blancas Begoña I. Antón-Domínguez Esteban Alcántara Antonio Trapero Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive Journal of Fungi mineral nutrition nitrogen <i>Olea europaea</i> potassium Verticillium wilt |
| title | Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive |
| title_full | Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive |
| title_fullStr | Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive |
| title_full_unstemmed | Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive |
| title_short | Elucidating the Effect of Nutritional Imbalances of N and K on the Infection of <i>Verticillium dahliae</i> in Olive |
| title_sort | elucidating the effect of nutritional imbalances of n and k on the infection of i verticillium dahliae i in olive |
| topic | mineral nutrition nitrogen <i>Olea europaea</i> potassium Verticillium wilt |
| url | https://www.mdpi.com/2309-608X/8/2/139 |
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