ArticlePLoS pathogens2021
First historical genome of a crop bacterial pathogen from herbarium specimen: Insights into citrus canker emergence.
Article in PLoS pathogens, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Whole-Genome Analysis of a Historical Strain ofInternational journal of molecular sciences · 2026Article
- Diversification of an emerging bacterial plant pathogen; insights into the global spread of Xanthomonas euvesicatoria pv. perforans.PLoS pathogens · 2025Article
- Back to the future: Using herbarium specimens to isolate nodule-associated bacteria.Ecology and evolution · 2024Article
- Identification of DNA Viruses in Ancient DNA from Herbarium Samples.Methods in molecular biology (Clifton, N.J.) · 2024Article
- Herbarium specimen sequencing allows precise dating of Xanthomonas citri pv. citri diversification history.Nature communications · 2023Article
- Clustered Regularly Interspaced Short Palindromic Repeats inMicroorganisms · 2022Article
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Authors and funding
12 authors.
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Abstract
Over the past decade, ancient genomics has been used in the study of various pathogens. In this context, herbarium specimens provide a precious source of dated and preserved DNA material, enabling a better understanding of plant disease emergences and pathogen evolutionary history. We report here the first historical genome of a crop bacterial pathogen, Xanthomonas citri pv. citri (Xci), obtained from an infected herbarium specimen dating back to 1937. Comparing the 1937 genome within a large set of modern genomes, we reconstructed their phylogenetic relationships and estimated evolutionary parameters using Bayesian tip-calibration inferences. The arrival of Xci in the South West Indian Ocean islands was dated to the 19th century, probably linked to human migrations following slavery abolishment. We also assessed the metagenomic community of the herbarium specimen, showed its authenticity using DNA damage patterns, and investigated its genomic features including functional SNPs and gene content, with a focus on virulence factors.
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