Plant neighbour-modulated susceptibility to pathogens in intraspecific mixtures - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Journal of Experimental Botany Année : 2021

Plant neighbour-modulated susceptibility to pathogens in intraspecific mixtures

Résumé

As part of a trend towards diversifying cultivated areas, varietal mixtures are subject to renewed interest as a means to manage diseases. Besides the epidemiological effects of varietal mixtures on pathogen propagation, little is known about the effect of intraspecific plant–plant interactions and their impact on responses to disease. In this study, genotypes of rice (Oryza sativa) or durum wheat (Triticum turgidum) were grown with different conspecific neighbours and manually inoculated under conditions preventing pathogen propagation. Disease susceptibility was measured together with the expression of basal immunity genes as part of the response to intra-specific neighbours. The results showed that in many cases for both rice and wheat susceptibility to pathogens and immunity was modified by the presence of intraspecific neighbours. This phenomenon, which we term ‘neighbour-modulated susceptibility’ (NMS), could be caused by the production of below-ground signals and does not require the neighbours to be infected. Our results suggest that the mechanisms responsible for reducing disease in varietal mixtures in the field need to be re-examined.
Fichier principal
Vignette du fichier
Pelissier-JEB-2021-CC-BY.pdf (1.67 Mo) Télécharger le fichier
Origine : Publication financée par une institution

Dates et versions

hal-03594773 , version 1 (02-03-2022)

Licence

Paternité

Identifiants

Citer

Rémi Pélissier, Luis Buendia, Andy Brousse, Coline Temple, Elsa Ballini, et al.. Plant neighbour-modulated susceptibility to pathogens in intraspecific mixtures. Journal of Experimental Botany, 2021, 72 (18), pp.6570-6580. ⟨10.1093/jxb/erab277⟩. ⟨hal-03594773⟩
76 Consultations
64 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More