Plant N economics and the extended phenotype: Integrating the functional traits of plants and associated soil biota into plant‐plant interactions - Ecole Nationale des Travaux Publics de l'Etat Accéder directement au contenu
Article Dans Une Revue Journal of Ecology Année : 2022

Plant N economics and the extended phenotype: Integrating the functional traits of plants and associated soil biota into plant‐plant interactions

Résumé

The nitrogen (N) economics of plants are generally described in terms of functional traits and how these affect N availability in a given environment. However, recent studies have shown that plant symbionts play a crucial role in plant N economics. A plant together with its symbiont can be considered as a meta-organism, the holobiont. Plant-associated symbionts are shaped by the plant, thereby extending the plant's phenotype. Decomposers also play an important role in plant N economics yet are usually not included in the plant holobiont.  In this review, we show the important roles that both symbionts and decomposers play in plant N economics. We focus on how plants respond to fluctuating N availability in a complex interaction network, which includes the plant's strategies and its interactions and feedback loops with the soil biota and with neighbouring plants, through competition for N by exploitation and interference.  Synthesis: Plant N economics and the outcome of plant-plant interactions in a community cannot be fully described solely through the functional traits of plant individuals. Properties emerging from the interaction network bring new insights into plant N economics. Further research is now needed to gain a deeper understanding of plant N economics and resource economics in plant communities by integrating a broader extended plant phenotype.
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Dates et versions

hal-03694422 , version 1 (13-06-2022)

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Marine Fernandez, Antoine Vernay, Ludovic Henneron, Larissa Adamik, Philippe P. Malagoli, et al.. Plant N economics and the extended phenotype: Integrating the functional traits of plants and associated soil biota into plant‐plant interactions. Journal of Ecology, 2022, 110, pp.2015-2032. ⟨10.1111/1365-2745.13934⟩. ⟨hal-03694422⟩
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