{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T06:34:56Z","timestamp":1790231696114,"version":"4.1.0"},"reference-count":103,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,12,22]],"date-time":"2022-12-22T00:00:00Z","timestamp":1671667200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000040","name":"Agriculture and Agri-Food Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000040","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Microbiol."],"abstract":"<jats:p>Lettuce is a major vegetable crop worldwide that is affected by numerous bacterial pathogens, including <jats:italic>Xanthomonas hortorum<\/jats:italic> pv. <jats:italic>vitians<\/jats:italic>, <jats:italic>Pseudomonas cichorii<\/jats:italic>, and <jats:italic>Pectobacterium carotovorum<\/jats:italic>. Control methods are scarce and not always effective. To develop new and sustainable approaches to contain these pathogens, we screened more than 1,200 plant-associated <jats:italic>Pseudomonas<\/jats:italic> strains retrieved from agricultural soils for their <jats:italic>in vitro<\/jats:italic> antagonistic capabilities against the three bacterial pathogens under study. Thirty-five <jats:italic>Pseudomonas<\/jats:italic> strains significantly inhibited some or all three pathogens. Their genomes were fully sequenced and annotated. These strains belong to the <jats:italic>P<\/jats:italic>. <jats:italic>fluorescens<\/jats:italic> and <jats:italic>P<\/jats:italic>. <jats:italic>putida<\/jats:italic> phylogenomic groups and are distributed in at least 27 species, including 15 validly described species. They harbor numerous genes and clusters of genes known to be involved in plant-bacteria interactions, microbial competition, and biocontrol. Strains in the <jats:italic>P<\/jats:italic>. <jats:italic>putida<\/jats:italic> group displayed on average better inhibition abilities than strains in the <jats:italic>P<\/jats:italic>. <jats:italic>fluorescens<\/jats:italic> group. They carry genes and biosynthetic clusters mostly absent in the latter strains that are involved in the production of secondary metabolites such as 7-hydroxytropolone, putisolvins, pyochelin, and xantholysin-like and pseudomonine-like compounds. The presence of genes involved in the biosynthesis of type VI secretion systems, tailocins, and hydrogen cyanide also positively correlated with the strains\u2019 overall inhibition abilities observed against the three pathogens. These results show promise for the development of biocontrol products against lettuce bacterial pathogens, provide insights on some of the potential biocontrol mechanisms involved, and contribute to public <jats:italic>Pseudomonas<\/jats:italic> genome databases, including quality genome sequences on some poorly represented species.<\/jats:p>","DOI":"10.3389\/fmicb.2022.1038888","type":"journal-article","created":{"date-parts":[[2022,12,22]],"date-time":"2022-12-22T10:41:57Z","timestamp":1671705717000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":23,"title":["Harnessing the genomic diversity of Pseudomonas strains against lettuce bacterial pathogens"],"prefix":"10.3389","volume":"13","author":[{"given":"Antoine","family":"Zboralski","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adrien","family":"Biessy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie","family":"Ciotola","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M\u00e9lanie","family":"Cadieux","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daphn\u00e9","family":"Albert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jochen","family":"Blom","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Filion","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2022,12,22]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"2818","DOI":"10.1016\/j.soilbio.2007.06.004","article-title":"Screening of bacterial isolates from various European soils for in vitro antagonistic activity towards Rhizoctonia solani and Fusarium oxysporum: Site-dependent composition and diversity revealed.","volume":"39","author":"Adesina","year":"2007","journal-title":"Soil. 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