Exploring biochemical diversity in bacteria

Weissenbach, Jean

doi:10.1590/0001-3765201920190252

Cited by 3 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This has led to some positive aspects of herbicide effects on microbial diversity. This review focuses on the study of the great biochemical diversity associated with phylogenetic diversity ( Weissenbach, 2019 ) that can therefore be the basis for the wide system of responses to herbicides in bacteria. The application of the herbicides from the thiocarbamate, dinitroaniline, and chloroacetamide families increased microbial biomass, measured by the chloroform fumigation method, probably due to direct degradation or via co-metabolic processes.…”

Section: Bacterial Herbicides Degradation Pathways and Bioremediationmentioning

confidence: 99%

Herbicide bioremediation: from strains to bacterial communities

Pileggi

Sadowsky

2020

Heliyon

View full text Add to dashboard Cite

There is high demand for herbicides based on the necessity to increase crop production to satisfy world-wide demands. Nevertheless, there are negative impacts of herbicide use, manifesting as selection for resistant weeds, production of toxic metabolites from partial degradation of herbicides, changes in soil microbial communities and biogeochemical cycles, alterations in plant nutrition and soil fertility, and persistent environmental contamination. Some herbicides damage non-target microorganisms via directed interference with host metabolism and via oxidative stress mechanisms. For these reasons, it is necessary to identify sustainable, efficient methods to mitigate these environmental liabilities. Before the degradation process can be initiated by microbial enzymes and metabolic pathways, microorganisms need to tolerate the oxidative stresses caused by the herbicides themselves. This can be achieved via a complex system of enzymatic and non-enzymatic antioxidative stress systems. Many of these response systems are not herbicide specific, but rather triggered by a variety of substances. Collectively, these nonspecific response systems enhance the survival and fitness potential of microorganisms. Biodegradation studies and remediation approaches have relied on individually selected strains to effectively remediate herbicides in the environment. Nevertheless, it has been shown that microbial communication systems that modulate social relationships and metabolic pathways inside biofilm structures among microorganisms are complex; therefore, use of isolated strains for xenobiotic degradation needs to be enhanced using a community-based approach with biodegradation pathway integration. Bioremediation efforts can use omics-based technologies to gain a deeper understanding of the molecular complexes of bacterial communities to achieve to more efficient elimination of xenobiotics. With this knowledge, the possibility of altering microbial communities is increased to improve the potential for bioremediation without causing other environmental impacts not anticipated by simpler approaches. The understanding of microbial community dynamics in free-living microbiota and those present in complex communities and in biofilms is paramount to achieving these objectives. It is also essential that non-developed countries, which are major food producers and consumers of pesticides, have access to these techniques to achieve sustainable production, without causing impacts through unknown side effects.

show abstract

Section: Bacterial Herbicides Degradation Pathways and Bioremediationmentioning

confidence: 99%