China-US grain trade shapes the spatial genetic pattern of common ragweed in East China cities.

ABSTRACT: Common ragweed is an invasive alien species causing severe allergies in urban residents. Understanding its urban invasion pathways is crucial for effective control. However, knowledge is limited, with most studies focusing on agricultural and natural areas, and occurrence record-based studies exhibiting uncertainties. We address this gap through a study in East China cities, combining population genetics and occurrence records. Leaf samples from 37 urban common ragweed populations across 15 cities are collected. Genomic and chloroplast DNA extraction facilitate analysis of spatial genetic patterns and gene flows. Additionally, international grain trade data is examined to trace invasion sources. Results indicate spatial genetic patterns impacted by multiple introductions over time. We infe

SUBMITTER: Lu S 

PROVIDER: S-EPMC10590438 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature