{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T04:45:14Z","timestamp":1785818714623,"version":"3.56.0"},"reference-count":38,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T00:00:00Z","timestamp":1785542400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pathogens"],"abstract":"<jats:p>Brassicaceae-based bio-disinfestation is a promising non-chemical option to manage lettuce Fusarium wilt caused by Fusarium oxysporum f. sp. lactucae (FOLac), but evidence integrating pathogen suppression, residue chemistry, and soil microbiome response remains limited. We conducted a greenhouse mesocosm assay with naturally infested soil to compare biofumigation (uncovered soil) and biosolarization (plastic-covered soil for 40 days) using five Brassicaceae residues (Brassica carinata, B. juncea, B. napus, Sinapis alba and Raphanus sativus) applied at two field-equivalent doses. Biosolarization created a distinct disinfestation environment, increasing soil temperature by an average of 2.74 \u00b0C and shifting oxidation\u2013reduction potential toward reducing conditions. This strategy consistently reduced culturable Fusarium populations, F. oxysporum-assigned colony-forming units (CFU) and lettuce wilt severity compared with uncovered biofumigation. The strongest disease suppression was observed under plastic-covered conditions, including the soil-only control, indicating that the covered microenvironment was a major driver of suppressiveness, while Brassicaceae residues modulated the magnitude and consistency of the response. Glucosinolate profiling revealed contrasting residue chemistries among species, providing a biochemical context for interpreting species-dependent effects. Shotgun metagenomics further showed that biosolarization and biofumigation produced distinct genus-level microbial community structures, with significant effects of strategy, timepoint and their interaction, and higher Shannon diversity under biosolarization. Overall, the integration of disease severity, culture-based inoculum quantification, physicochemical indicators, residue chemistry and metagenomics supports Brassicaceae-based biosolarization as a promising pre-plant approach for suppressing FOLac wilt in naturally infested soils, with the plastic-covered disinfestation environment emerging as the main driver of suppression and Brassicaceae residues modulating the response.<\/jats:p>","DOI":"10.3390\/pathogens15080810","type":"journal-article","created":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T15:51:23Z","timestamp":1785772283000},"page":"810","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Brassicaceae-Based Biosolarization Reduces Lettuce Fusarium Wilt (FOLac) in Naturally Infested Soils"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3198-9184","authenticated-orcid":false,"given":"Juan Manuel","family":"Arroyo","sequence":"first","affiliation":[{"name":"Department of Agricultural Production, Escuela T\u00e9cnica Superior de Ingenier\u00eda Agron\u00f3mica, Alimentaria y de Biosistemas, Universidad Polit\u00e9cnica de Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lorenzo","family":"Badiali","sequence":"additional","affiliation":[{"name":"Department of Agricultural and Environmental Sciences, University of Tuscia, 01100 Viterbo, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1442-1274","authenticated-orcid":false,"given":"Daniel","family":"Palmero","sequence":"additional","affiliation":[{"name":"Department of Agricultural Production, Escuela T\u00e9cnica Superior de Ingenier\u00eda Agron\u00f3mica, Alimentaria y de Biosistemas, Universidad Polit\u00e9cnica de Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Leslie, J.F., and Summerell, B.A. (2006). 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