Means, motive and opportunity for biological invasions: Genetic introgression in a fungal pathogen
2023
Rogério, Flávia | van Oosterhout, Cock | Ciampi‐guillardi, Maisa | Correr, Fernando Henrique | Hosaka, Guilherme Kenichi | Cros-Arteil, Sandrine | Rodrigues Alves Margarido, Gabriel | Massola Júnior, Nelson | Gladieux, Pierre, P. | Universidade de São Paulo = University of São Paulo (USP) | Universidad de Salamanca [España] = University of Salamanca [Spain] | University of East Anglia [Norwich] (UEA) | Plant Health Institute of Montpellier (UMR PHIM) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | National Council for the Improvement of Higher Education (PROEX/CAPES), Grant/Award Number: 330002037002P3 | Sao Paulo Research Foundation (FAPESP), Grant/Award Number: 2017/09178-8 | National Science and Technology Development Council (CNPq), Grant/Award Number: 153958/2016--2 and 305289/2018--7 | National Council for the Improvement of Higher Education (CAPES/PDSE), Grant/Award Number: 88881.133223/2016--01
International audience
اظهر المزيد [+] اقل [-]إنجليزي. Invasions by fungal plant pathogens pose a significant threat to the health of agricultural ecosystems. Despite limited standing genetic variation, many invasive fungal species can adapt and spread rapidly, resulting in significant losses to crop yields. Here, we report on the population genomics of Colletotrichum truncatum, a polyphagous pathogen that can infect more than 460 plant species, and an invasive pathogen of soybean in Brazil. We study the whole-genome sequences of 18 isolates representing 10 fields from two major regions of soybean production. We show that Brazilian C. truncatum is subdivided into three phylogenetically distinct lineages that exchange genetic variation through hybridization. Introgression affects 2%-30% of the nucleotides of genomes and varies widely between the lineages. We find that introgressed regions comprise secreted protein-encoding genes, suggesting possible co-evolutionary targets for selection in those regions. We highlight the inherent vulnerability of genetically uniform crops in the agro-ecological environment, particularly when faced with pathogens that can take full advantage of the opportunities offered by an increasingly globalized world. Finally, we discuss "the means, motive and opportunity" of fungal pathogens and how they can become invasive species of crops. We call for more population genomic studies because such analyses can help identify geographical areas and pathogens that pose a risk, thereby helping to inform control strategies to better protect crops in the future.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique