ArticleBMC microbiology2026
Ecological and genomic dynamics of the soil microbiome under sustained pressure from Phytophthora nicotianae, the causal agent of tobacco black shank disease.
Article in BMC microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSoil-borne pathogens threaten global agriculture, yet soil microbiome adaptation to persistent pathogen pressure is poorly understood. This study characterized the ecological and genomic long-term shifts in a tobacco field soil microbiome under sustained Phytophthora nicotianae pressure. We conducted a six-year longitudinal metagenomic study in a field with a documented history of tobacco black shank disease. Comparative analysis of the rhizosphere microbiome from Year_1 and Year_6 was performed using shotgun sequencing, non-redundant gene catalog construction, and functional annotation against specialized databases.
resultsOur analysis revealed a profound genetic remodelling, with 45.6% (116,529) of 255,258 genes showing significant differences in abundance (p < 0.05, |log
conclusionSustained pathogen pressure triggers a coordinated, multi-level adaptive succession, reshaping the genetic, functional, and taxonomic structure of the soil microbiome into a more defended and specialized state.
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