Fluazifop-P-butyl (herbicide) affects richness and structure of soil bacterial communities

摘要: Abstract Fusilade (fluazifop-P-butyl) is an extensively used herbicide in legumes cropping systems; nevertheless, the extent of its ecological risk remains unknown. The aim this work to estimate impact on some key enzyme activities, namely acid phosphatase, urease and FDA, effect soil bacterial communities rhizosphere pea (Pisum sativum). Acid FDA showed a high decrease following application fluazifop-P-butyl mainly at ten-fold field rate. Grain yield was also severely affected concentration (−50%). T-RFLP analysis 16S rDNA revealed significant richness structure communities. Putative taxonomic assignation induced TRFs marked pattern acidogenic bacteria like as Staphylococcus, Escherichia, Desulfobacter, Clostridium, Paludibacter other sulfate-reducing Desulfocella halophila Desulfocurvus vexinensis. These may participate acidogenesis production propionic from after hydrolytic cleavage. They are known play important roles global biogeochemical sulfur cycles. Unfortunately, potential human pathogens were stimulated. Moreover, many putative plant-growth-promoting belonging genera Streptomyces Bacillus found be inhibited bulk rhizosphere. diversity more pronounced compared or uncultivated which suggest that major component mediated by root system.