Host-Parasite Interactions from the Inside: Plant Reproductive Ontogeny Drives Specialization in Parasitic Insects

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dc.contributor.author Boivin, Thomas
dc.contributor.author Gidoin, Cindy
dc.contributor.author von Aderkas, Patrick
dc.contributor.author Safrana, Jonathan
dc.contributor.author Candau, Jean- Noël
dc.contributor.author Chalon, Alain
dc.contributor.author Sondo, Marion
dc.contributor.author El Maâtaoui, Mohamed
dc.date.accessioned 2016-06-22T23:46:38Z
dc.date.available 2016-06-22T23:46:38Z
dc.date.copyright 2015 en_US
dc.date.issued 2015-10
dc.identifier.citation Boivin, T., Gidoin, C., von Aderkas, P., Safrana, J., Candau, J-N., Chalon, A. … El Maâtaoui, M. (2015). Host-parasite interactions from the inside: Plant reproductive ontogeny drives specialization in parasitic insects. PLoS One, 10(10), 1-14. en_US
dc.identifier.uri http://dx.doi.org/10.1371/journal.pone.0139634
dc.identifier.uri http://hdl.handle.net/1828/7352
dc.description.abstract Host plant interactions are likely key drivers of evolutionary processes involved in the diversification of phytophagous insects. Granivory has received substantial attention for its crucial role in shaping the interaction between plants and their seed parasites, but fine-scale mechanisms explaining the role of host plant reproductive biology on specialization of seed parasites remain poorly described. In a comparative approach using plant histological techniques, we tested the hypotheses that different seed parasite species synchronize their life cycles to specific stages in seed development, and that the stage they target depends on major differences in seed development programs. In a pinaceous system, seed storage products are initiated before ovule fertilization and the wasps target the ovule’s nucellus during megagametogenesis, a stage at which larvae may benefit from the by-products derived from both secreting cells and dying nucellar cells. In a cupressaceous system, oviposition activity peaks later, during embryogenesis, and the wasps target the ovule’s megagametophyte where larvae may benefit from cell disintegration during embryogenesis. Our cytohistological approach shows for the first time how, despite divergent oviposition targets, different parasite species share a common strategy that consists of first competing for nutrients with developing plant structures, and then consuming these developed structures to complete their development. Our results support the prediction that seed developmental program is an axis for specialization in seed parasites, and that it could be an important parameter in models of their ecological and taxonomic divergence. This study provides the basis for further investigating the possibility of the link between plant ontogeny and pre-dispersal seed parasitism. en_US
dc.description.sponsorship TB, CG, MS, AC, JS and MEM received grants from the French Agence Nationale pour la Recherche (ANR 10 INTB 1705 04-MACBI), http://www.agence-nationale-recherche.fr/. PvA and JNC received grants from The Natural Sciences and Engineering Research Council of Canada, Strategic Partnership Program grant (STPGP 396881-2010), http://www.nserc-crsng.gc.ca/. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. en_US
dc.language.iso en en_US
dc.publisher PLoS One en_US
dc.rights Attribution 2.5 Canada *
dc.rights.uri http://creativecommons.org/licenses/by/2.5/ca/ *
dc.title Host-Parasite Interactions from the Inside: Plant Reproductive Ontogeny Drives Specialization in Parasitic Insects en_US
dc.type Article en_US
dc.description.scholarlevel Faculty en_US
dc.description.reviewstatus Reviewed en_US

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