Effects of plant tissue permeability on invasion and population bottlenecks of a phytopathogen.

ABSTRACT: Pathogen genetic diversity varies in response to environmental changes. However, it remains unclear whether plant barriers to invasion could be considered a genetic bottleneck for phytopathogen populations. Here, we implement a barcoding approach to generate a pool of 90 isogenic and individually barcoded Ralstonia solanacearum strains. We used 90 of these strains to inoculate tomato plants with different degrees of physical permeability to invasion (intact roots, wounded roots and xylem inoculation) and quantify the phytopathogen population dynamics during invasion. Our results reveal that the permeability of plant roots impacts the degree of population bottleneck, genetic diversity, and composition of Ralstonia populations. We also find that selection is the main driver structuring patho

SUBMITTER: Jiang G 

PROVIDER: S-EPMC10762237 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature