Plant–parasite coevolution: A weak signature of local adaptation between Peruvian Globodera pallida populations and wild potatoes - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Ecology and Evolution Year : 2020

Plant–parasite coevolution: A weak signature of local adaptation between Peruvian Globodera pallida populations and wild potatoes

Abstract

Plant-parasite coevolution has generated much interest and studies to understand and manage diseases in agriculture. Such a reciprocal evolutionary process could lead to a pattern of local adaptation between plants and parasites. Based on the phylogeography of each partner, the present study tested the hypothesis of local adaptation between the potato cyst nematode Globodera pallida and wild potatoes in Peru. The measured fitness trait was the hatching of cysts which is induced by host root exudates. Using a cross-hatching assay between 13 populations of G. pallida and root exudates from 12 wild potatoes, our results did not show a strong pattern of local adaptation of the parasite but the sympatric combinations induced better hatching of cysts than allopatric combinations, and there was a negative relationship between the hatching percentage and the geographical distance between nematode populations and wild potatoes. Moreover, a strong effect of the geographic origin of root exudates was found, with root exudates from south of Peru inducing better hatching than root exudates from north of Peru. These results could be useful to develop new biocontrol products or potato cultivars to limit damages caused by G. pallida.
Fichier principal
Vignette du fichier
Gautier-et-al_2020_EcolEvol.pdf (801.52 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Licence : CC BY - Attribution

Dates and versions

hal-03141972 , version 1 (30-08-2022)

Licence

Attribution

Identifiers

Cite

Camille Gautier, Sylvain Fournet, Christophe Piriou, Lionel Renault, Jean‐claude Yvin, et al.. Plant–parasite coevolution: A weak signature of local adaptation between Peruvian Globodera pallida populations and wild potatoes. Ecology and Evolution, 2020, 10 (9), pp.4156-4163. ⟨10.1002/ece3.6248⟩. ⟨hal-03141972⟩
82 View
13 Download

Altmetric

Share

Gmail Facebook X LinkedIn More