Photosystem II Repair Cycle in Faba Bean May Play a Role in Its Resistance to <i>Botrytis fabae</i> Infection
Chocolate spot, which is caused by the necrotrophic fungus <i>Botrytis fabae</i>, is a major foliar disease occurring worldwide and dramatically reducing crop yields in faba bean (<i>Vicia faba</i>). Although chemical control of this disease is an option, it has serious econo...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/f2081763a0d04d1b9099fc93e8e43244 |
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| Sumario: | Chocolate spot, which is caused by the necrotrophic fungus <i>Botrytis fabae</i>, is a major foliar disease occurring worldwide and dramatically reducing crop yields in faba bean (<i>Vicia faba</i>). Although chemical control of this disease is an option, it has serious economic and environmental drawbacks that make resistant cultivars a more sensible choice. The molecular mechanisms behind the defense against <i>B. fabae</i> are poorly understood. In this work, we studied the leave proteome in two faba bean genotypes that respond differently to <i>B. fabae</i> in order to expand the available knowledge on such mechanisms. For this purpose, we used two-dimensional gel electrophoresis (2DE) in combination with Matrix-Assisted Laser Desorption/Ionization (MALDI-TOF/TOF). Univariate statistical analysis of the gels revealed 194 differential protein spots, 102 of which were identified by mass spectrometry. Most of the spots belonged to proteins in the energy and primary metabolism, degradation, redox or response to stress functional groups. The MS results were validated with assays of protease activity in gels. Overall, they suggest that the two genotypes may respond to <i>B. fabae</i> with a different PSII protein repair cycle mechanism in the chloroplast. The differences in resistance to <i>B. fabae</i> may be the result of a metabolic imbalance in the susceptible genotype and of a more efficient chloroplast detoxification system in the resistant genotype at the early stages of infection. |
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