Influence of 2,4-D residues on the soil microbial community and growth of tree species

Aguiar, Luciana Monteiro; Santos, J.B.; Laia, Marcelo Luiz de; Gonçalves, Janaína Ferreira; Costa, Vitor Antunes Martins da; Brito, Lílian Almeida

doi:10.1080/15226514.2019.1644289

Cited by 10 publications

(2 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although 2,4-D influences the structure of microbiomes in soil, even with a low half-life [ 26 ], there are few studies that describe the effects of 2,4-D on bacteria of the genus Pseudomonas , reporting degradation processes, without describing bacterial systems of tolerance to the herbicide [ 27 ]. One exception is the description of the role of quorum sensing signaling molecules in the 2,4-D response to 2,4-D [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

Tolerance of Pseudomonas strain to the 2,4-D herbicide through a peroxidase system

et al. 2021

View full text Add to dashboard Cite

Herbicides are widely used in agricultural practices for preventing the proliferation of weeds. Upon reaching soil and water, herbicides can harm nontarget organisms, such as bacteria, which need an efficient defense mechanism to tolerate stress induced by herbicides. 2,4-Dichlorophenoxyacetic acid (2,4-D) is a herbicide that exerts increased oxidative stress among bacterial communities. Bacterial isolates were obtained from the biofilm of tanks containing washing water from the packaging of different pesticides, including 2,4-D. The Pseudomonas sp. CMA-7.3 was selected because of its tolerance against 2,4-D toxicity, among several sensitive isolates from the biofilm collection. This study aimed to evaluate the antioxidative response system of the selected strain to 2,4-D. It was analyzed the activity of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and guaiacol peroxidase GPX enzymes, that are poorly known in the literature for bacterial systems. The Pseudomonas sp. CMA-7.3 presented an efficient response system in balancing the production of hydrogen peroxide, even at 25x the dose of 2,4-D used in agriculture. The antioxidative system was composed of Fe–SOD enzymes, less common than Mn–SOD in bacteria, and through the activities of KatA and KatB isoforms, working together with APX and GPX, having their activities coordinated possibly by quorum sensing molecules. The peroxide control is poorly documented for bacteria, and this work is unprecedented for Pseudomonas and 2,4-D. Not all bacteria harbor efficient response system to herbicides, therefore they could affect the diversity and functionality of microbiome in contaminated soils, thereby impacting agricultural production, environment sustainability and human health.

show abstract

Section: Resultsmentioning

confidence: 99%

Tolerance of Pseudomonas strain to the 2,4-D herbicide through a peroxidase system

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The wide use of 2,4-D in agriculture has led to the long-term persistence of its residues in agricultural soils. Many scientific works prove its adverse effect on plants and soil organisms such as earthworms, fungi and bacteria and their interrelationships 42 .…”

Section: Resultsmentioning

confidence: 99%

Microplastics influence on herbicides removal and biosurfactants production by a Bacillus sp. strain active against Fusarium culmorum

Walaszczyk,

Jasińska,

Bernat

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The amounts of anthropogenic pollutants, e.g., microplastics (MPs) and pesticides, in terrestrial and aquatic ecosystems have been increasing. The aim of this study was to assess the influence of MPs on the removal of herbicides (metolachlor, MET; 2,4-dichlorophenoxyacetic acid, 2,4-D) and the production of biosurfactants (surfactin and iturin) by Bacillus sp. Kol L6 active against Fusarium culmorum. The results showed that Kol L6 eliminated 40–55% MET and 2,4-D from liquid cultures, but this process was inhibited in the presence of MPs. Although the pollutants did not strongly limit the production of surfactin, iturin secretion was found to decrease by more than 70% in the presence of all three pollutants. Interestingly, the strongest modification in the profile of iturin homologues was calculated for the cultures containing MET + MP and 2,4-D + MET + MP. The bacteria significantly limited the growth of the phytopathogenic F. culmorum DSM1094F in the presence of individual pollutants and their two-component mixtures. However, in the presence of all three tested pollutants, the growth of the fungus was limited only partially (by no more than 40%). The presented results are a starting point for further research on bacteria-fungi-plants interactions in the soil environment in the presence of multiple pollutants.

show abstract

Combined toxicity of Cd and 2,4-dichlorophenoxyacetic acid on the earthworm Eisenia andrei under biochar amendment

Boughattas

Zitouni

Mkhinini

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Influence of 2,4-D residues on the soil microbial community and growth of tree species

Cited by 10 publications

References 67 publications

Tolerance of Pseudomonas strain to the 2,4-D herbicide through a peroxidase system

Tolerance of Pseudomonas strain to the 2,4-D herbicide through a peroxidase system

Microplastics influence on herbicides removal and biosurfactants production by a Bacillus sp. strain active against Fusarium culmorum

Combined toxicity of Cd and 2,4-dichlorophenoxyacetic acid on the earthworm Eisenia andrei under biochar amendment

Contact Info

Product

Resources

About