Physiological and morphoanatomical effects of glyphosate in Eugenia uniflora, a Brazilian plant species native to the Atlantic Forest biome

Cruz, Carlos Eduardo Souza; Freitas-Silva, Larisse de; Ribeiro, Cléberson; Silva, Luzimar Campos da

doi:10.1007/s11356-020-12003-4

Cited by 16 publications

(16 citation statements)

References 58 publications

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“…Another explanation for this eff ect, is related to the increased formation of reactive oxygen species (ROS), because alterations in metabolic pathways caused by herbicides, are able to increase oxidative stress (Sharma et al, 2012), causing electrolyte leakage. Cruz et al (2021), found that the overproduction of ROSs promoted lipid peroxidation in cell membranes of E. unifl ora leaves exposed to glyphosate, which resulted in extravasation of cell contents, decreased photosynthetic rate, anatomical changes and visual symptoms of phytotoxicitydamage also observed in this study.…”

Section: Discussionsupporting

confidence: 69%

“…The phytotoxicity and severity indices were more expressive after 168 hours of application, and in the two highest doses (800 and 1200 g i.a ha -1 ). Symptoms similar to these were also observed in other forest species subjected to glyphosate, such as Caryocar brasiliense (Silva et al, 2016), Handroanthus chrysotrichus (Freitas- , and Eugenia unifl ora L. (Cruz et al, 2021). Visual symptoms such as chlorosis and necrosis observed in B. virgilioides leaves may have occurred due to the overproduction of ROS, associated with anatomical changes such as protoplast retraction and cell collapse.…”

Section: Discussionsupporting

confidence: 55%

“…Some research has evaluated the damage caused by glyphosate drift on native species in controlled environments, Silva et al (2016), demonstrated that this herbicide aff ected all photosynthetic variables of the species Caryocar brasiliense Camb., as well as Batista et al (2018), in Pouteriatorta. Santos et al (2020), found that in the species Cenostigma macrophyllum Tul., gliphosate caused photosynthetic and anatomical damage, the same was described by Freitas- , in the species Handroanthus chrysotrichus and Garcinia gardneriana, and Cruz et al (2021), in Eugenia unifl ora L. However, there is still a lack of studies on the potential damage to forest species caused by the application of herbicides (Brancalion et al, 2009). Therefore, prior knowledge of the morphoanatomical and physiological responses of native plants exposed to herbicides, acquired in controlled environments is essential, as they will serve as a tool to support the monitoring of the eff ects of glyphosate drift in natural vegetation.…”

Section: Introductionsupporting

confidence: 68%

“…Visual symptoms such as chlorosis and necrosis observed in B. virgilioides leaves may have occurred due to the overproduction of ROS, associated with anatomical changes such as protoplast retraction and cell collapse. These symptoms are common due to the initial interaction between the herbicide droplets and the plant's leaf surface (Lima et al, 2017;Freitas-Silva et al, 2020;Cruz et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

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PHYSIOLOGICAL AND MORPHOANATOMIC RESPONSES OF Bowdichia virgilioides KUNTH. (FABACEAE) TO GLYPHOSATE

Oliveira¹,

Filho

Santos

et al. 2021

Rev. Árvore

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The expansion of agribusiness in Brazil is partly due to the expansion of arable areas in the Cerrado biome, which, consequently, leads to an increase in the use of herbicides, including glyphosate. Therefore, the objective of this study was to evaluate the physiological and morphoanatomic responses of Bowdichia virgilioides Kunth. (Fabaceae), when exposed to the herbicide glyphosate, under controlled greenhouse conditions. In addition, the study proposed to identify possible response patterns of the studied species and provide subsidies for the study of the species in areas affected by the drift of the herbicide. The experimental design was in randomized blocks, with seven doses of the herbicide: 25, 50, 100, 200, 400, 800, and 1200 g i.a ha-1 besides the control (0), with four repetitions each. Gas exchange, chlorophyll a fluorescence emission, chloroplast pigment content, membrane permeability, and visual and anatomical features were analyzed. The results showed that glyphosate is phytotoxic to B. virgilioides because, even at low doses, this herbicide was able to affect all parameters analyzed. There was also confirmation of the presence of phenolic compounds, mainly in the palisade parenchyma. The metabolic alterations presented demonstrated the sensitivity of B. virgilioides to glyphosate. Thus, the observed responses can serve as a tool for diagnosing the effects of glyphosate exposure on this species, present in native areas affected by the drift of this herbicide. Its indiscriminate use poses a risk to Cerrado biodiversity.

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Section: Discussionsupporting

confidence: 69%

Section: Discussionsupporting

confidence: 55%

Section: Introductionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

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PHYSIOLOGICAL AND MORPHOANATOMIC RESPONSES OF Bowdichia virgilioides KUNTH. (FABACEAE) TO GLYPHOSATE

Oliveira¹,

Filho

Santos

et al. 2021

Rev. Árvore

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“…Even in treatments where leaf damage was not visibly clear, as in plants subjected to Mn and As, structural changes occurred, such as changes in the shape of the cell. Therefore, anatomical assessment can provide prognostic information on the effect of stressors agents in plants, as pointed out by Cruz et al (2021) and Freitas- . The alterations in the shape of cells were also pronounced in roots, where the generation of hydroxyl radicals may have caused the cleavage of cell wall polysaccharides, as observed by Liszkay et al (2004).…”

Section: Discussionmentioning

confidence: 99%

Metallic elements in plants: bioaccumulation, phytoremediation potential and physiological responses

Coelho¹

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Pollution caused by metallic elements in the environment is becoming increasingly problematic worldwide. In the current work, several aspects of the metallic elements in plants were investigated, including the accumulation in species affected by an environmental disaster involving the disruption of a mining tailing dam; the physiological responses and phytoremediation potential of the aquatic macrophyte water lettuce (Pistia stratiotes) subjected to excess iron (Fe) and manganese (Mn), and combinations of Fe, Mn, and arsenic (As); and, finally, the in vivo monitoring of As-induced responses in Arabidopsis thaliana plants. We found a concerning enrichment of metal accumulation, especially for Fe and Mn, in the plant species evaluated in affected areas by mining tailings. Considering the spreading potential of contamination in aquatic environments, water lettuce plants, which are often used in phytoremediation studies, were tested for removal of excess Fe and Mn, along with the association with As. The plants displayed a great accumulation of Fe, mainly trapped in roots, whereas Mn was hyperaccumulated in shoots and roots. Accumulation of Mn was observed especially in the apoplast, avoiding major impairments of physiological processes. In presence of As, the plants displayed root loss as an acclimation response, followed by re-emission of the organs. Nonetheless, the specimens were able to maintain a high accumulation of the pollutants, supplied isolated or in association, demonstrating phytoremediation potential in multi- contaminated environments. Furthermore, the in vivo measurements using genetically-encoded biosensors showed intriguing stability of Mg-ATP 2− levels upon short-term arsenate (AsV) exposure. We also observed that the depletion of the GSH pool is the most likely cause of glutathione redox potential (E GSH ) oxidation. The findings presented here emphasize the importance of continuing to monitor metal-contaminated areas, as well as exposing alternatives for phytoremediation of aquatic environments and providing new insights into plant metabolism in response to pollutants. Keywords: Aquatic plants – Pollution effect. Aquatic plants – Heavy metal effects. Pistia stratiotes. Heavy metals. Aquatic plants – Metabolism.

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An ‘on–off–on’ fluorescent switch based on a luminous covalent organic framework for the rapid and selective detection of glyphosate

Fan,

Li,

Zhou

et al. 2023

Luminescence

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Glyphosate, the most used herbicide in the world, has a residue problem that cannot be ignored. However, glyphosate itself does not have fluorescence emission and lacks the conditions for fluorescence detection. In this work, a rapid and selective fluorescence detection method of glyphosate was designed by an “on‐off‐on” fluorescent switch based on luminous covalent organic framework (L‐COF). Only the fixed concentration of Fe3+ as intermediate could trigger the fluorescent switch and no incubation step was required. The proposed method showed good accuracy with correlation coefficient of 0.9978. The method’s limits of detection and quantitation were 0.88 and 2.93 μmol/L, which were lower than the maximum allowable residue limits in some regulations. Environmental water samples and tomatoes were selected as actual samples to verify the application in complex matrix. A satisfactory mean recovery from 87% to 106% was gained. Furthermore, Fe3+ could induce fluorescence quenching of L‐COF through photo‐induced electron transfer (PET) effect, while the addition of glyphosate could block PET effect to achieve the detection. These results demonstrated the proposed method had abilities to detect glyphosate, and broadened the application of L‐COF.

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Physiological and morphoanatomical effects of glyphosate in Eugenia uniflora, a Brazilian plant species native to the Atlantic Forest biome

Cited by 16 publications

References 58 publications

PHYSIOLOGICAL AND MORPHOANATOMIC RESPONSES OF Bowdichia virgilioides KUNTH. (FABACEAE) TO GLYPHOSATE

PHYSIOLOGICAL AND MORPHOANATOMIC RESPONSES OF Bowdichia virgilioides KUNTH. (FABACEAE) TO GLYPHOSATE

Metallic elements in plants: bioaccumulation, phytoremediation potential and physiological responses

An ‘on–off–on’ fluorescent switch based on a luminous covalent organic framework for the rapid and selective detection of glyphosate

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