| Title: | "Historic exposure to herbivores, not constitutive traits, explains plant tolerance to herbivory in the case of two Medicago species (Fabaceae)" |
| Author(s): | Capo M; Roig-Oliver M; Cardona C; Cursach J; Bartolome J; Rita J; Baraza E; |
| Address: | "Research Group on Plant Biology under Mediterranean Conditions, Department of Biology, Faculty of Sciences, University of Balearic Islands, Palma, 07122, Spain. Electronic address: miquelcaposervera@gmail.com. Research Group on Plant Biology under Mediterranean Conditions, Department of Biology, Faculty of Sciences, University of Balearic Islands, Palma, 07122, Spain. Centre Forestal de les Illes Balears, Institut Balear de la Natura, Gremi Corredors, 10, Pol. Son Rossinyol, Palma, 07009, Spain. Small Ruminant Research Group, Department of Animal and Food Science, Universitat Autonoma de Barcelona, Bellaterra, 08193, Spain" |
| DOI: | 10.1016/j.plantsci.2021.110890 |
| ISSN/ISBN: | 1873-2259 (Electronic) 0168-9452 (Linking) |
| Abstract: | "Mechanisms that allow plants to survive and reproduce after herbivory are considered to play a key role in plant evolution. In this study, we evaluated how tolerance varies in species with different historic exposure to herbivores considering ontogeny. We exposed the range-restricted species Medicago citrina and its closely related and widespread species M. arborea to one and two herbivory simulations (80 % aerial biomass loss). Physiological and growth parameters related to tolerance capacity were assessed to evaluate constitutive values (without herbivory) and induced tolerance after damage. Constitutive traits were not always related to greater tolerance, and each species compensated for herbivory through different traits. Herbivory damage only led to mortality in M. citrina; adults exhibited root biomass loss and increased oxidative stress after damage, but also compensated aerial biomass. Despite seedlings showed a lower death percentage than adults after herbivory in M. citrina, they showed less capacity to recover control values than adults. Moderate tolerance to M. arborea herbivory and low tolerance to M. citrina is found. Thus, although the constitutive characteristics are maintained in the lineage, the tolerance of plants decreases in M. citrina. That represents how plants respond to the lack of pressure from herbivores in their habitat" |
| Keywords: | "Crops, Agricultural/genetics/growth & development/immunology *Genetic Variation Genotype Herbivory/*genetics/*immunology Medicago/*genetics/*growth & development/*immunology Plant Immunity/*genetics Spain Introduced herbivores Medicago sp.Mediterranean i;" |
| Notes: | "MedlineCapo, Miquel Roig-Oliver, Margalida Cardona, Carles Cursach, Joana Bartolome, Jordi Rita, Juan Baraza, Elena eng Ireland 2021/04/28 Plant Sci. 2021 Jun; 307:110890. doi: 10.1016/j.plantsci.2021.110890. Epub 2021 Mar 24" |
