Differences in seed dormancy and germination in amphicarpic legumes: manifold bet-hedging in space and time
| Autor: | Ricardo Sánchez-Martín, José M. Gómez, Rafael Rubio de Casas, Pierre-Olivier Cheptou |
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| Přispěvatelé: | Departament Electronica, Universitat de Barcelona (UB), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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 Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, 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), Ministerio de Economía y Competitividad (España), European Commission, Junta de Andalucía |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Amphicarpy dormancy/colonization trade-off [SDV]Life Sciences [q-bio] Lathyrus cicera L Germination Plant Science Biology 010603 evolutionary biology 01 natural sciences law.invention Geocarpy law Lathyrus amphicarpos L Amphicarpic legumes Mediterranean environments Ecology Evolution Behavior and Systematics Ecology Spacetime Vicia amphicarpa L Environmental heterogeneity Seed dormancy Dormancy/colonization trade-off 15. Life on land Agronomy Physical dormancy [SDE]Environmental Sciences Seed dormancy and germination Vicia sativa L Manifold (fluid mechanics) 010606 plant biology & botany |
| Zdroj: | Journal of Plant Ecology Journal of Plant Ecology, Wiley, 2021, 14 (4), pp.662-672. ⟨10.1093/jpe/rtab019⟩ Journal of Plant Ecology, 2021, 14 (4), pp.662-672. ⟨10.1093/jpe/rtab019⟩ Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1752-9921 1752-993X |
| Popis: | [Aims]: Dispersal through space or time via dormancy is one of the primary processes whereby organisms can influence the environment they experience. In plants, strong evolutionary correlations are expected between the two kinds of dispersal because both are performed by the seeds and play comparable adaptive roles. In this paper, we investigated these evolutionary correlations using amphicarpic plants, which simultaneously produce aerial seeds with high spatial dispersal propensity and subterranean seeds that do not disperse. [Methods]: We investigated the variation in dormancy and germination in aerial and subterranean seeds of two amphicarpic legumes (Vicia amphicarpa L. and Lathyrus amphicarpos L.) and two closely related homocarpic taxa (Vicia sativa L. and Lathyrus cicera L.) by estimating germination percentages following different combinations of dormancy breaking treatments (i.e. dry after-ripening, cold stratification and physical scarification). [Important Findings]: Our results showed complex interactions between spatial and temporal dispersal. Right after dispersal, aerial seeds were more dormant than their subterranean counterparts, but this trend reversed with after-ripening, as seeds developed physical dormancy. Seeds of homocarpic plants germinated at higher percentages than those of their amphicarpic congeners and lost dormancy homogeneously with after-ripening. Conversely, amphicarpic seeds exhibited varied dormancy strategies modulated by both physiological and physical dormancy. These are expected to increase variation in emergence timing, providing multiple levels of diversifying bet-hedging. This strategy might be adaptive under highly unpredictable conditions by enabling plants to rely on historically favorable sites in good seasons without preventing spatial and temporal migration. This research was supported by the Spanish Ministries of Science, Innovation and Universities (FPU grant FPU17/00629 awarded to R.S.M.) and of Economy and Competitiveness (grant CGL2016-79950-R) including FEDER funds as well as by the Junta de Andalucía/FP7 Talentia program. |
| Databáze: | OpenAIRE |
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