Manure-Based Amendments Influence Surface-Associated Bacteria and Markers of Antibiotic Resistance on Radishes Grown in Soils with Different Textures.

ABSTRACT: A controlled greenhouse study was performed to determine the effect of manure or compost amendments, derived during or in the absence of antibiotic treatment of beef and dairy cattle, on radish taproot-associated microbiota and indicators of antibiotic resistance when grown in different soil textures. Bacterial beta diversity, determined by 16S rRNA gene amplicon sequencing, bifurcated according to soil texture (P < 0.001, R = 0.501). There was a striking cross-effect in which raw manure from antibiotic-treated and antibiotic-free beef and dairy cattle added to loamy sand (LS) elevated relative (16S rRNA gene-normalized) (by 0.9 to 1.9 log₁₀) and absolute (per-radish) (by 1.1 to 3.0 log₁₀) abundances of intI1 (an integrase gene and indicator of mo

SUBMITTER: Guron GKP 

PROVIDER: S-EPMC8117773 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature