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Genetic rearrangements in Pseudomonas amygdali pathovar aesculi shape coronatine plasmids
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Nielsen, Tue Kjærgaard, Winther-Have, Caroline S., Thomsen, Iben Margrete, Jackson, Robert W., Rabiey, Mojgan, Hennessy, Rosanna Catherine, Bak, Frederik, Kot, Witold, Nicolaisen, Mette Haubjerg, Carstens, Alexander Byth and Hansen, Lars Hestbjerg (2023) Genetic rearrangements in Pseudomonas amygdali pathovar aesculi shape coronatine plasmids. Infection, Genetics and Evolution , 113 . 105486. doi:10.1016/j.meegid.2023.105486 ISSN 1567-1348.
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Official URL: http://doi.org/10.1016/j.meegid.2023.105486
Abstract
Plant pathogenic Pseudomonas species use multiple classes of toxins and virulence factors during host infection. The genes encoding these pathogenicity factors are often located on plasmids and other mobile genetic elements, suggesting that they are acquired through horizontal gene transfer to confer an evolutionary advantage for successful adaptation to host infection. However, the genetic rearrangements that have led to mobilization of the pathogenicity genes are not fully understood. In this study, we have sequenced and analyzed the complete genome sequences of four Pseudomonas amygdali pv. aesculi (Pae), which infect European horse chestnut trees (Aesculus hippocastanum) and belong to phylogroup 3 of the P. syringae species complex. The four investigated genomes contain six groups of plasmids that all encode pathogenicity factors. Effector genes were found to be mostly associated with insertion sequence elements, suggesting that virulence genes are generally mobilized and potentially undergo horizontal gene transfer after transfer to a conjugative plasmid. We show that the biosynthetic gene cluster encoding the phytotoxin coronatine was recently transferred from a chromosomal location to a mobilizable plasmid that subsequently formed a co-integrate with a conjugative plasmid.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QH Natural history Q Science > QP Physiology Q Science > QR Microbiology S Agriculture > SB Plant culture |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
Library of Congress Subject Headings (LCSH): | Phytopathogenic microorganisms, Phytopathogenic microorganisms -- Genetics, Pseudomonas , Phytotoxins, Virulence (Microbiology), Plasmids, Plasmids -- Genetics, Mobile genetic elements , Nanopores | ||||||||
Journal or Publication Title: | Infection, Genetics and Evolution | ||||||||
Publisher: | Elsevier BV | ||||||||
ISSN: | 1567-1348 | ||||||||
Official Date: | September 2023 | ||||||||
Dates: |
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Volume: | 113 | ||||||||
Article Number: | 105486 | ||||||||
DOI: | 10.1016/j.meegid.2023.105486 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 27 September 2023 | ||||||||
Date of first compliant Open Access: | 27 September 2023 | ||||||||
RIOXX Funder/Project Grant: |
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