Plant metabolic response to stress in an arid ecosystem is mediated by the presence of neighbors

Author:

Montesinos‐Navarro Alicia1ORCID,López‐Climent Maria F.2,Pérez‐Clemente Rosa M.2,Arenas‐Sánchez Cristina1,Sánchez‐Martín Ricardo1ORCID,Gómez‐Cadenas Aurelio2,Verdú Miguel1ORCID

Affiliation:

1. Centro de Investigaciones Sobre Desertificación (CIDE, CSIC‐UV‐GV), Carretera de Moncada‐Náquera Valencia Spain

2. Departamento de Biología, Bioquímica y Ciencias Naturales Universitat Jaume I Castellón de la Plana Spain

Abstract

AbstractPlant neighbors in arid environments can ameliorate abiotic stress by reducing insolation, but they also attract herbivores and pathogens, especially when neighbors are close relatives that share similar antagonists. Plants' metabolic profiles provide a chemical fingerprint of the physiological processes behind plant responses to different environmental stresses. For example, abscisic acid and proline, mainly involved in stomatal closure and osmotic adjustment, can induce plant responses to abiotic stress, while jasmonic acid and salicylic acid primarily regulate plant defense to herbivory or pathogens. Neighbor plants can generate contrasting ecological contexts, modulating plant responses to abiotic and biotic stresses. We hypothesize that plant metabolic profile is modulated by its neighbors in a vegetation patch, expecting a higher investment in metabolites related to biotic‐stress tolerance (i.e., herbivory or pathogens) when growing associated with other plants, especially to phylogenetically close relatives, compared to plants growing alone. We show that plants from five species growing with neighbors invest more in biotic‐stress tolerance while their conspecifics, growing alone, invest more in abiotic‐stress tolerance. This tendency in plants' metabolic profiles was not affected by the phylogenetic diversity of their neighborhood. Linking physiological snapshots with community processes can contribute to elucidating metabolic profiles derived from plant–plant interactions.

Funder

Florida Polytechnic University

Ministry of Education

Publisher

Wiley

Reference36 articles.

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