Effect of pesticides on microbial communities in container aquatic habitats

Abstract

Container aquatic habitats support a specialized community of macroinvertebrates (e.g. mosquitoes) that feed on microbial communities associated with decaying organic matter. These aquatic habitats are often embedded within and around agricultural lands and are frequently exposed to pesticides. We used a microcosm approach to examine the single and combined effects of two herbicides (atrazine, glyphosate), and three insecticides (malathion, carbaryl, permethrin) on microbial communities of container aquatic habitats. MiSeq sequencing of the V4 region of both bacterial and archaeal 16S rRNA gene was used to characterize the microbial communities of indoor microcosms that were either exposed to each pesticide alone, a mix of herbicides, a mix of insecticides, or a mix of all five insecticides. Individual insecticides but not herbicides reduced the microbial diversity and richness and two insecticides, carbaryl and permethrin, also altered the microbial community structure. A mixture of herbicides had no effect on microbial diversity or structure but a mixture of insecticides or all five pesticides reduced microbial diversity and altered the community structure. These findings suggest that exposure of aquatic ecosystems to individual pesticides or their mixtures can disrupt aquatic microbial communities and there is need to decipher how these changes affect resident macroinvertebrate communities.

Molecular Biology-Based Analysis of the Interactive Effect of Nickel and Xanthates on Soil Bacterial Community Diversity and Structure

“…Analyzing the response of soil microorganisms to metals and flotation reagents, individually and as mixtures, can serve for a greater understanding of the associated pollution impacts and for their prediction and management. The majority of studies have focused on the application of different traditional techniques at the community level [27,28] which cannot provide enough information on the spectrum of taxa in the exposed microbial community [28]. Previous to the present study, a microcalorimetric-based analysis was conducted to analyze the individual and interactive effect chemicals used here on the soil microbial activity [29].…”

Enantiomeric effect of paclobutrazol on the microorganism composition during wine fermentation

“…In addition to this, pesticides also can affect the stability of microbial communities. Previous studies confirmed that pesticides may adversely affect the structure, composition, and function of microbial communities . For fermentation foods, fermentation process is mainly mediated by microorganisms, while few studies have reported the effects of pesticide residues in raw materials on fermentation microorganisms and the quality of fermented foods.…”

“…Previous studies confirmed that pesticides may adversely affect the structure, composition, and function of microbial communities. [8][9][10][11][12] For fermentation foods, fermentation process is mainly mediated by microorganisms, while few studies have reported the effects of pesticide residues in raw materials on fermentation microorganisms and the quality of fermented foods. Markedly, when the pesticide residues of grapes were introduced into the fermentation process, the presence of exogenous substances may affect the fermentation microbe composition, and thereby affecting the quality of wine.…”

Effect of propanil, linuron, and dicamba on the degradation kinetics of 2,4‐dichlorophenoxyacetic acid by Burkholderia sp. A study by differential analysis of 2,4‐dichlorophenoxyacetic acid degradation data

“…[3]: The values of X and S correspond, respectively, to the change in cell mass (x F -x 0 ) and compound (s 0 − s F ) concentrations.…”

“…com.mx), Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Av. Wilfrido Massieu s/n Zacatenco, Mexico City CP 07738, Mexico Abbreviations: 2,4-D, 2,4-dichlorophenoxyacetic acid; BM, basal medium; MSM, minimal salt medium diversity and altered the community structure of aquatic ecosystems [3]. In addition, it is known that the combination of pesticides could enhance their adverse effects on soil microbial communities [4] and that the biodegradation rate of some pesticides is affected by the presence of organic coformulants [5].…”