English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Threat to Asian wild apple trees posed by gene flow from domesticated apple trees and their “pestified” pathogens

Feurtey, A., Guitton, E., De Gracia Coquerel, M., Duvaux, L., Shiller, J., Bellanger, M.-N., et al. (2020). Threat to Asian wild apple trees posed by gene flow from domesticated apple trees and their “pestified” pathogens. Molecular Ecology, n/a(n/a), 1-17. doi:10.1111/mec.15677.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Feurtey, Alice1, Author              
Guitton, Ellen, Author
De Gracia Coquerel, Marie, Author
Duvaux, Ludovic, Author
Shiller, Jason, Author
Bellanger, Marie-Noëlle, Author
Expert, Pascale, Author
Sannier, Mélanie, Author
Caffier, Valérie, Author
Giraud, Tatiana, Author
Le Cam, Bruno, Author
Lemaire, Christophe, Author
Affiliations:
1Max Planck Fellow Group Environmental Genomics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2068284              

Content

show
hide
Free keywords: apple, avirulence gene, crop-to-wild gene flow, hybridization, Malus, secondary contact, Venturia
 Abstract: Abstract Secondary contact between crops and their wild relatives poses a threat to wild species, not only through gene flow between plants, but also through the dispersal of crop pathogens and genetic exchanges involving these pathogens, particularly those that have become more virulent by indirect selection on resistant crops, a phenomenon known as ?pestification.? Joint analyses of wild and domesticated hosts and their pathogens are essential to address this issue, but such analyses remain rare. We used population genetics approaches, demographic inference and pathogenicity tests on host?pathogen pairs of wild or domesticated apple trees from Central Asia and their main fungal pathogen, Venturia inaequalis, which itself has differentiated agricultural and wild-type populations. We confirmed the occurrence of gene flow from cultivated (Malus domestica) to wild (Malus sieversii) apple trees in Asian forests, potentially threatening the persistence of Asian wild apple trees. Pathogenicity tests demonstrated the pestification of V. inaequalis, the agricultural-type population being more virulent on both wild and domesticated trees. Single nucleotide polymorphism (SNP) markers and the demographic modelling of pathogen populations revealed hybridization following secondary contact between agricultural and wild-type fungal populations, and dispersal of the agricultural-type pathogen population in wild forests, increasing the threat of disease in the wild apple species. We detected an SNP potentially involved in pathogen pestification, generating an early stop codon in a gene encoding a small secreted protein in the agricultural-type fungal population. Our findings, based on joint analyses of paired host and pathogen data sets, highlight the threat posed by cultivating a crop near its centre of origin, in terms of pestified pathogen invasions in wild plant populations and introgression in the wild-type pathogen population.

Details

show
hide
Language(s): eng - English
 Dates: 2020-09-072019-12-082020-09-082020-10-272020-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1111/mec.15677
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Molecular Ecology
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: n/a (n/a) Sequence Number: - Start / End Page: 1 - 17 Identifier: ISSN: 0962-1083
CoNE: https://pure.mpg.de/cone/journals/resource/954925580119