Tolerance and remedial potential of trees submitted to atrazine and sulfentrazone in the rhizosphere

Santos, Edson Aparecido dos; Filho, Uelson Sabino da Silva; Barroso, Gabriela Madureira; Rocha, Breno Preslei Júnio Silvestre; Possato, Ernani Lopes

doi:10.1080/15226514.2019.1644290

Cited by 8 publications

(4 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dicotyledonous plants are somewhat more sensitive than monocotyledonous plants, (Brain and Hoberg 2016;Dalton and Boutin 2010;White and Boutin 2007) but not to the extent that atrazine could be considered selective. In the laboratory and field, atrazine does not typically cause rapid mortality (e.g., the complete loss of all viability with no potential for recovery) in terrestrial or riparian plants at environmentally realistic exposures and durations (Brain et al 2019;Brain and Hoberg 2016;Dos Santos et al 2020;Wang et al 2015;White and Boutin 2007) and, as discussed above (Section 2.4), plants can recover. Also noted in Section 2.2 above, there is no evidence of bioaccumulation of atrazine in terrestrial plants beyond general uptake as would be expected for an herbicide with its physicochemical properties that result in transport in the xylem with minimal systemic transport when applied to leaves.…”

Section: Problem Formulationmentioning

confidence: 98%

Assessment of risks to listed species from the use of atrazine in the USA: a perspective

Smith

Armbrust

Brain

et al. 2021

Journal of Toxicology and Environmental Health, Part B

View full text Add to dashboard Cite

Atrazine is a triazine herbicide used predominantly on corn, sorghum, and sugarcane in the US. Its use potentially overlaps with the ranges of listed (threatened and endangered) species. In response to registration review in the context of the Endangered Species Act, we evaluated potential direct and indirect impacts of atrazine on listed species and designated critical habitats. Atrazine has been widely studied, extensive environmental monitoring and toxicity data sets are available, and the spatial and temporal uses on major crops are well characterized. Ranges of listed species are less well-defined, resulting in overly conservative designations of "May Effect". Preferences for habitat and food sources serve to limit exposure among many listed animal species and animals are relatively insensitive. Atrazine does not bioaccumulate, further diminishing exposures among consumers and predators. Because of incomplete exposure pathways, many species can be eliminated from consideration for direct effects. It is toxic to plants, but even sensitive plants tolerate episodic exposures, such as those occurring in flowing waters. Empirical data from long-term monitoring programs and realistic field data on off-target deposition of drift indicate that many other listed species can be removed from consideration because exposures are below conservative toxicity thresholds for direct and indirect effects. Combined with recent mitigation actions by the registrant, this review serves to refine and focus forthcoming listed species assessment efforts for atrazine. Abbreviations: a.i. = Active ingredient (of a pesticide product). AEMP = Atrazine Ecological Monitoring Program. AIMS = Avian Incident Monitoring SystemArach. = Arachnid (spiders and mites). AUC = Area Under the Curve. BE = Biological Evaluation (of potential effects on listed species). BO = Biological Opinion (conclusion of the consultation between USEPA and the Services with respect to potential effects in listed species). CASM = Comprehensive Aquatic System Model. CDL = Crop Data LayerCN = field Curve Number. CRP = Conservation Reserve Program (lands). CTA = Conditioned Taste Avoidance. DAC = Diaminochlorotriazine (a metabolite of atrazine, also known by the acronym DACT). DER = Data Evaluation Record. EC25 = Concentration causing a specified effect in 25% of the tested organisms. EC50 = Concentration causing a specified effect in 50% of the tested organisms. EC50 RGR = Concentration causing a 50% reduction in relative growth rate. ECOS = Environmental Conservation Online System. EDD = Estimated Daily Dose. EEC = Expected Environmental Concentration. EFED = Environmental Fate and Effects Division (of the USEPA). EFSA = European Food Safety Agency. EIIS = Ecological Incident Information System. ERA = Environmental Risk Assessment. ESA = Endangered Species Act. ESU = Evolutionarily Significant UnitsFAR = Field Application RateFIFRA = Federal Insecticide, Fungicide, and Rodenticide Act. FOIA = Freedom of Information Act (request). GSD = Genus Sensitivity Distribution. HC...

show abstract

Section: Problem Formulationmentioning

confidence: 98%

Assessment of risks to listed species from the use of atrazine in the USA: a perspective

Smith

Armbrust

Brain

et al. 2021

Journal of Toxicology and Environmental Health, Part B

View full text Add to dashboard Cite

show abstract

“…The values of the analyzed variables were transformed into percentages in comparison to the control treatment ---------------------------------------------mg dm -3 --------------------------------------------- ------------------------------------------% ----------------------------------------- ---------------------------------------------------------cmol c dm -3 ----------------------------------------------------------6.1 1.17 5.0 2.2 0.0 2.50 (without herbicide) for standardization, as they are different species (Santos et al, 2020). The assumptions of homogeneity of variance and normality of residuals were tested using the Shapiro-Wilk and O'Neill-Mathews tests, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…The greater rhizospheric colonization by mycorrhizal fungi in I. edulis can be explained by the ability of this species to tolerate the herbicide and the phytoremediation of soils with sulfentrazone residues (Santos et al, 2020). Some microorganisms can use the compounds of this degradation as an energy source for their growth and, consequently, increase colonization.…”

Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi activity in the rhizosphere of tree seedlings subjected to residual herbicides

et al. 2023

Self Cite

View full text Add to dashboard Cite

Trees occurring on the margins of agricultural areas can mitigate damage from residual herbicides. Rhizospheric microbial activity associated with trees is one of the main remedial capacity indicators. The objective of this study was to evaluate the rhizospheric microbiological activity in tree species subjected to the herbicides atrazine and sulfentrazone via the rhizosphere. The experiment was designed in four blocks and a 6 × 3 factorial scheme. The first factor consisted of six tree species from Brazil and the second of atrazine, sulfentrazone, and water solutions. Four herbicide applications were performed via irrigation. The total dry mass of the plants, mycorrhizal colonization, number of spores, basal respiration of the rhizospheric soil, and survival rate of bioindicator plants after phytoremediation were determined. Trichilia hirta had higher biomass when treated with atrazine and sulfentrazone. Herbicides decreased the microbial activity in Triplaris americana and did not affect the microbiological indicators of Myrsine gardneriana, Schizolobium parahyba, and Toona ciliata. Fewer bioindicator plants survived in soil with Triplaris americana and sulfentrazone. Microbiological indicators were influenced in different ways between species by the presence of herbicides in the rhizosphere.

show abstract

“…The roots, stems, and leaves of T.ciliata can be utilized as medication and have successful restorative properties [14][15][16]. The monetary worth of this variety is quite high, and it is generally utilized and has extraordinary potential for advancement and utilization [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Sequencing and analysis of the complete mitochondrial genomes of Toona sinensis and Toona ciliata reveal evolutionary features of Toona

Liu

et al. 2023

BMC Genomics

View full text Add to dashboard Cite

Background Toona is a critical genus in the Meliaceae, and the plants of this group are an asset for both restorative and restorative purposes, the most flexible of which are Toona sinensis and Toona ciliata. To concentrate on the advancement of mitochondrial(Mt) genome variety in T.sinensis and T.ciliata, the Mt genomes of the two species were sequenced in high throughput independently, after de novo assembly and annotation to construct a Mt genome map for comparison in genome structure. Find their repetitive sequences and analyze them in comparison with the chloroplast genome, along with Maximum-likelihood(ML) phylogenetic analysis with 16 other relatives. Results (1) T. sinensis and T.ciliata are both circular structures with lengths of 683482 bp and 68300 bp, respectively. They share a high degree of similarity in encoding genes and have AT preferences. All of them have the largest Phe concentration and are the most frequently used codons. (2) Both of their Mt genome are highly preserved in terms of structural and functional genes, while the main variability is reflected in the length of tRNA, the number of genes, and the value of RSCU. (3) T. siniensis and T. ciliata were detected to have 94 and 87 SSRs, respectively, of which mononucleotides accounted for the absolute proportion. Besides, the vast majority of their SSRs were found to be poly-A or poly-T. (4)10 and 11 migrating fragments were identified in the comparison with the chloroplast genome, respectively. (5) In the ML evolutionary tree, T.sinensis and T.ciliata clustered individually into a small branch with 100% support, reflecting two species of Toona are very similarly related to each other. Conclusions This research provides a basis for the exploitation of T.sinensis and T.ciliata in terms of medicinal, edible, and timber resources to avoid confusion; at the same time, it can explore the evolutionary relationship between the Toona and related species, which does not only have an important practical value, but also provides a theoretical basis for future hybrid breeding of forest trees, molecular markers, and evolutionary aspects of plants, which has great scientific significance.

show abstract

Tolerance and remedial potential of trees submitted to atrazine and sulfentrazone in the rhizosphere

Cited by 8 publications

References 47 publications

Assessment of risks to listed species from the use of atrazine in the USA: a perspective

Assessment of risks to listed species from the use of atrazine in the USA: a perspective

Arbuscular mycorrhizal fungi activity in the rhizosphere of tree seedlings subjected to residual herbicides

Sequencing and analysis of the complete mitochondrial genomes of Toona sinensis and Toona ciliata reveal evolutionary features of Toona

Contact Info

Product

Resources

About