Academic Journal
Interspecies Exchange of Mobile Genetic Elements During a Plant Disease Outbreak.
| Τίτλος: | Interspecies Exchange of Mobile Genetic Elements During a Plant Disease Outbreak. |
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| Συγγραφείς: | Evseeva D; Research Group for Plant Pathogen Evolution, Max Planck Institute for Biology, Tübingen, Germany., Pecrix Y; CIRAD UMR PVBMT, Saint-Pierre, La Réunion F-97410, France., Kucka M; Friedrich Miescher Laboratory of the Max Planck Society, Tübingen, Germany., Weiler C; Research Group for Plant Pathogen Evolution, Max Planck Institute for Biology, Tübingen, Germany., Franzl C; Research Group for Plant Pathogen Evolution, Max Planck Institute for Biology, Tübingen, Germany., Vlková-Žlebková M; Research Group for Plant Pathogen Evolution, Max Planck Institute for Biology, Tübingen, Germany., Colombi E; Macquarie University, Sydney, Australia., Chan YF; Friedrich Miescher Laboratory of the Max Planck Society, Tübingen, Germany., Poussier S; CIRAD UMR PVBMT, Saint-Pierre, La Réunion F-97410, France.; Université de la Réunion, La Réunion, France.; CIRAD UMR-PHIM, Montpellier, France., Wicker E; CIRAD UMR-PHIM, Montpellier, France., McCann HC; Research Group for Plant Pathogen Evolution, Max Planck Institute for Biology, Tübingen, Germany. |
| Πηγή: | Genome biology and evolution [Genome Biol Evol] 2026 Sep 02; Vol. 18 (9). |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Oxford University Press Country of Publication: England NLM ID: 101509707 Publication Model: Print Cited Medium: Internet ISSN: 1759-6653 (Electronic) Linking ISSN: 17596653 NLM ISO Abbreviation: Genome Biol Evol Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Oxford, UK : Oxford University Press |
| Ιατρικοί όροι (MeSH): | Plant Diseases*/microbiology , Ralstonia*/genetics , Ralstonia*/pathogenicity , Ralstonia*/classification , Interspersed Repetitive Sequences*, Ralstonia solanacearum/genetics ; Phylogeny ; Disease Outbreaks ; Gene Transfer, Horizontal ; Evolution, Molecular |
| Περίληψη: | Outbreak sequencing provides insight into the origin and evolutionary processes acting on emerging pathogens. Sequencing a historic multihost outbreak of Ralstonia spp. in Martinique shows the outbreak was caused by two lineages that diverged at separate times from mainland populations. One lineage (Ralstonia pseudosolanacearum I-18) was originally introduced from Asia to South America, where it became well established prior to its dissemination to Martinique, where it retains a signature of specialization on solanaceous hosts. The novel lineage first identified during the outbreak (Ralstonia solanacearum IIB-4NPB) arose from a mainland population endemic to the Americas prior to its arrival in Martinique, where host-range expansion was observed. In contrast to minor changes in secreted effector protein repertoires, the emergent R. solanacearum IIB-4NPB acquired a novel integrative and conjugative element (ICERsoRUN1145). After identifying all Ralstonia spp. ICEs and mapping their spatial and phylogenetic distribution among Ralstonia spp. sampled during the outbreak, we found closely related ICEs circulating in mainland populations of R. pseudosolanacearum, indicating likely exchange between introduced and endemic Ralstonia spp. The family of ICEs in Ralstonia (ICERs) has a conserved bipartite structure and display a striking pattern of functional specialization in each cargo gene insertion hotspot: the first hotspot is a target for metabolic gene acquisition, and the second is a target for defense element acquisition. This work provides unparalleled phylogenetic and spatial resolution of an unusual outbreak and highlights the role of horizontal transfer in shaping the ecological success of an emerging pathogen. (© The Author(s) 2026. Published by Oxford University Press on behalf of Society for Molecular Biology and Evolution.) |
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| Contributed Indexing: | Keywords: bacterial plant pathogen; disease emergence; genomic epidemiology; integrative and conjugative elements; microbial evolution; mobile elements |
| SCR Organism: | Ralstonia pseudosolanacearum |
| Entry Date(s): | Date Created: 20260731 Date Completed: 20260905 Latest Revision: 20260923 |
| Update Code: | 20260923 |
| PubMed Central ID: | PMC13540745 |
| DOI: | 10.1093/gbe/evag192 |
| PMID: | 42535547 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1759-6653 |
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| DOI: | 10.1093/gbe/evag192 |