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Identification of DNA Viruses in Ancient DNA from Herbarium Samples

Abstract

Herbaria encompass millions of plant specimens, mostly collected in the 19th and 20th centuries, that can represent a key resource for investigating the history and evolution of phytopathogens. In the last years, the application of high-throughput sequencing technologies for the analysis of ancient nucleic acids has revolutionized the study of ancient pathogens including viruses, allowing the reconstruction of historical genomic viral sequences, improving phylogenetic based molecular dating, and providing essential insight into plant virus ecology. In this chapter, we describe a protocol to reconstruct ancient plant and soil viral sequences starting from highly fragmented ancient DNA extracted from herbarium plants and their associated rhizospheric soil. Following Illumina high-throughput sequencing, sequence data are de novo assembled and DNA viral sequences are selected, according to their similarity with known viruses.
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hal-04455136 , version 1 (13-02-2024)

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Gianluca Grasso, Silvia Rotunno, Régis Debruyne, Lucie Bittner, Laura Miozzi, et al.. Identification of DNA Viruses in Ancient DNA from Herbarium Samples. Viral Metagenomics, 2732, pp.221-234, 2024, Methods in Molecular Biology, 978-1-0716-3514-8. ⟨10.1007/978-1-0716-3515-5_15⟩. ⟨hal-04455136⟩
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