A Trade-Off Between Sporangia Size and Number Exists in the Potato Late Blight Pathogen Phytophthora infestans, and Is Not Altered by Biotic and Abiotic Factors
| Autor: | Roselyne Corbière, Bruno Marquer, Annabelle Androdias, Josselin Montarry, Didier Andrivon, Nicolas Mariette, Romain Mabon, Alexander Kröner |
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| Přispěvatelé: | Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine reproductive strategies Phytopathology and phytopharmacy Plant Science lcsh:Plant culture 010603 evolutionary biology 01 natural sciences facteur biotique Life history theory 03 medical and health sciences Propagule pomme de terre Botany Blight lcsh:SB1-1110 mildew Original Research Solanum tuberosum 2. Zero hunger Abiotic component Oomycete fitness life-history traits plant pathogen biology facteur abiotique Host (biology) Sporangium fungi phythophtora infestans food and beverages biology.organism_classification trait de vie Phytopathologie et phytopharmacie [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy 030104 developmental biology mildiou Phytophthora infestans potato |
| Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Frontiers, 2018, 9, pp.1841. ⟨10.3389/fpls.2018.01841⟩ Frontiers in Plant Science, 2018, 9, pp.1841. ⟨10.3389/fpls.2018.01841⟩ Frontiers in Plant Science (9), . (2018) Frontiers in Plant Science, Vol 9 (2018) |
| ISSN: | 1664-462X |
| Popis: | International audience; The negative relationship between offspring size and number is a classic example of trade-off between life-history traits, reported many times in animal and plant species. Here, we wanted to ascertain whether such a trade-off occurred in the oomycete Phytophthora infestans, and whether it was impacted by biotic and abiotic factors. We thus conducted three infection experiments under controlled conditions and measured the number and the size of sporangia (asexual propagules) produced on potato by different P. infestans isolates. In all experiments, we observed a negative relationship between sporangia size and number, demonstrating the existence of a trade-off. Moreover, although the potato host cultivar, temperature and host of origin (tomato or potato) all affected sporangia number, sporangia size or both, none of these biotic and abiotic factors did change the trade-off. Therefore, the trade-off between sporangia size and number could maintain the polyphenism for these traits in P. infestans populations, and favors the coexistence of distinct reproductive strategies within this species. Our results emphasize the relevance to focus on the relationship between offspring size and number in other fungal plant pathogens, as well as to study the impact of offspring size on fitness-linked traits (virulence and disease lesion development) in these organisms. |
| Databáze: | OpenAIRE |
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