The depleted mineralization of the fungicide chlorothalonil derived from loss in soil microbial diversity.

ABSTRACT: There are lack of studies regarding the effects of microbial diversity on specific soil functions, such as pesticides degradation. This study evaluated the role of bacterial community diversity and biochar on chlorothalonil (CTN) degradation, using 'dilution to extinction' approach, PCR-DGGE/16S rRNA gene technique, and radiorespirometry (¹⁴C-CTN). Biochar and microbial community dilution affected structure of the microbial community. In spite of that, CTN mineralization was slow, but dissipation was very fast (D₅₀ < 1.0 d) due to immediate chemical degradation and formation of non-extractable (bound) residues. However, any depletion on soil microbial diversity strongly affected CTN mineralization, suggesting that this function is related to less abundant but specific

SUBMITTER: de Souza AJ 

PROVIDER: S-EPMC5676787 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature