The stimulating role of syringic acid, a plant secondary metabolite, in the microbial degradation of structurally-related herbicide, MCPA

摘要: The ability of microorganisms to degrade xenobiotics can be exploited develop cost-effective and eco-friendly bioremediation technologies. Microorganisms almost all organic pollutants, but this process might very slow in some cases. A promising way enhance removal recalcitrant from the environment lies interactions between plant exudates such as secondary metabolites (PSMs) microorganisms. Although there is a considerable body evidence that PSMs alter microbial community composition stimulate degradation xenobiotics, their mechanisms action remain poorly understood. With mind, our aim was demonstrate similarity chemical structures results higher micropollutant rates, occurrence corresponding bacterial degradative genes. To verify this, present study analyses influence syringic acid, metabolite, on an herbicide, 4-chloro-2-methylphenoxyacetic acid (MCPA). In particular, presence appropriate MCPA genes, efficiency changes samples phytotoxicity have been analyzed. Significant depletion achieved enriched with acid. confirmed not only greater upon spiking thus decreased phytotoxicity, also number genes responsible for biodegradation. 16S rRNA gene sequence analysis revealed ubiquitous enrichment β-proteobacteria Rhodoferax, Achromobacter, Burkholderia Cupriavidus. obtained provide further confirmation released into rhizosphere biodegradation including MCPA.