Contrasting Key Bacteria and Fungi Related to Sugar Beet (Beta vulgaris L.) with Different Resistances to Beet Rot under Two Farming Modes

Sugar beet production is threatened by beetroot rot, which can be triggered consecutive monoculture. Previous studies have shown the beneficial function of microbes affiliated with different plant compartments in inhibiting various pathogens. However, whether sugar root recruit particular at risk rot still unclear. Therefore, this study explored composition and community structure bacteria fungi (endosphere root, rhizosphere, bulk soil) under two farming modes (monoculture rotation). Our result showed that mode significantly affected soil. In structures between varieties were similar rotation mode, markedly monoculture mode. The bacterial fungal diversity rhizosphere endophytic rot-suppressive variety was higher than rot-conducive variety. Under as biomarkers enriched rot-resistant variety, e.g., operational taxonomic units (OTUs) to genus Sordariomycetes, Cordycipitaceae, Lecanicillium, Plectosphaerellaceae, S085, Pedosphaeraceae Actinobacteria, Pseudonocardia, Exobasidiomycetes while for OTUs Chitinophagaceae, Flavisolibacter Novosphingobium, Sphingobacterium, Tilletiopsis_washingtonensis, Flavobacterium root. network analysis order Saccharimonadales, Anaerolineae, family Saprospiraceae, Subgroup_10 (belonging Thermoanaerobaculaceae), Lysobacter, AKYG587 keystone taxa both harmful such Pedobacter, Ferruginibacter, P3OB-42, present. variation soil pH critical contributor microbial difference. summary, shaping changing pH. has more relative variety; underlying mechanisms associations are worth further investigation.