Influence of Glyphosate on Susceptible and Resistant Ryegrass Populations to Herbicide

Picoli, Gilmar José; Carbonari, Caio Antônio; Matos, Ana Karollyna Alves de; Rodrigues, Luan Fernando Ormond Sobreira; Velini, Edivaldo Domingues

doi:10.1590/s0100-83582017350100055

Cited by 9 publications

(9 citation statements)

References 34 publications

(42 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ha −1 the plants showed high WUE values, which did not necessarily indicate efficiency due to the death of plants. Similar reports were published by Silva et al, 8 Santaniello et al 24 and Picoli-Junior et al, 51 but all their results were obtained under ideal water conditions.…”

Section: Discussionsupporting

confidence: 88%

“…High values of WUE indicate an efficient relationship between A and E in plants able to maintain a balance between saving water and maintaining metabolism, 51 as represented by the ratio of DMM produced per gram of transpired water 24 . In fact, WUE was higher in plants treated with low doses of glyphosate, indicating an effective gs in maintaining adequate water content, even in water‐stressed plants.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Glyphosate hormesis mitigates the effect of water deficit in safflower (Carthamus tinctorius L.)

Santos

Silva

Amorim

et al. 2021

Pest Management Science

View full text Add to dashboard Cite

BACKGROUND The current climate change scenario may affect water availability in the soil, impacting the agricultural sector. Planting of safflower (Carthamus tinctorius L.) has increased because of its potential for cultivation under drought conditions during the off‐season in Brazil and its high potential for use in biofuel production. There are several reports about the potential of low doses of glyphosate to promote plant growth and development (hormesis). Despite the concept of glyphosate hormesis being well established, little is known about any mitigating effect on plants under water deficit conditions. The hypothesis raised is that low doses of glyphosate promote water stress tolerance during the growth and reproductive phases of C. tinctorius exposed to different water regimes. RESULTS In regimes with and without water deficiency, growth of plants treated with low doses of glyphosate increased, reaching a maximum stimulus amplitude of ~ 131% of control. However, plants under water deficit required lower doses to achieve maximum growth and development. They maintained photosynthetic rates at the level of well‐watered plants because they had reduced stomatal conductance and transpiration. Gains in plant height and leaf area were the same as for controls. CONCLUSIONS Low doses of glyphosate can act as mitigators of water deficit in C. tinctorius, allowing plants to maintain their metabolism, reaching levels close to those of plants without water stress, as observed for plant height and leaf area. Our findings indicate that there are even greater implications for understanding glyphosate hormesis in plants under drought conditions, given the current climate change scenario. © 2020 Society of Chemical Industry

show abstract

Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Glyphosate hormesis mitigates the effect of water deficit in safflower (Carthamus tinctorius L.)

Santos

Silva

Amorim

et al. 2021

Pest Management Science

View full text Add to dashboard Cite

show abstract

“…De Maria et al found a 26% reduction in RuBisCO activity in the leaves of Lupinus albus one week after application of 10 mM glyphosate [92]. Picoli et al found a reduction in the assimilation rate of CO2 in glyphosate-resistant ryegrass following exposure to glyphosate [93]. Zobiole et al observed that glyphosate-treated glyphosate-resistant soybean plants become chlorotic (yellow) due to a decrease in the rate of photosynthesis [94].…”

Section: Glyphosate and Phosphate Bindingmentioning

confidence: 99%

Glyphosate’s Synergistic Toxicity in Combination with Other Factors as a Cause of Chronic Kidney Disease of Unknown Origin

Gunatilake

Seneff

Orlando

2019

IJERPH

View full text Add to dashboard Cite

Chronic kidney disease of unknown etiology (CKDu) is a global epidemic. Sri Lanka has experienced a doubling of the disease every 4 or 5 years since it was first identified in the North Central province in the mid-1990s. The disease primarily affects people in agricultural regions who are missing the commonly known risk factors for CKD. Sri Lanka is not alone: health workers have reported prevalence of CKDu in Mexico, Nicaragua, El Salvador, and the state of Andhra Pradesh in India. A global search for the cause of CKDu has not identified a single factor, but rather many factors that may contribute to the etiology of the disease. Some of these factors include heat stroke leading to dehydration, toxic metals such as cadmium and arsenic, fluoride, low selenium, toxigenic cyanobacteria, nutritionally deficient diet and mycotoxins from mold exposure. Furthermore, exposure to agrichemicals, particularly glyphosate and paraquat, are likely compounding factors, and may be the primary factors. Here, we argue that glyphosate in particular is working synergistically with most of the other factors to increase toxic effects. We propose, further, that glyphosate causes insidious harm through its action as an amino acid analogue of glycine, and that this interferes with natural protective mechanisms against other exposures. Glyphosate’s synergistic health effects in combination with exposure to other pollutants, in particular paraquat, and physical labor in the ubiquitous high temperatures of lowland tropical regions, could result in renal damage consistent with CKDu in Sri Lanka.

show abstract

“…Zobiole et al [57] found that glyphosate application at later growth stages decreased nutrient accumulation, nodulation and the parameters of plant growth and yield, making the plant more susceptible in the last physiological stages. This is additional evidence for the sensitivity window of tolerant GM soybean as an immediate response to the herbicide, a period in which the plants appear to be more vulnerable [58].…”

Section: Metabolic Costs Inferred By Pleiotropic Effects In Genetically Modified Soybeansmentioning

confidence: 80%

Proteomic Profile of Glyphosate-Resistant Soybean under Combined Herbicide and Drought Stress Conditions

Benevenuto

Zanatta

Guerra

et al. 2021

Plants

View full text Add to dashboard Cite

While some genetically modified (GM) plants have been targeted to confer tolerance to abiotic stressors, transgenes are impacted by abiotic stressors, causing adverse effects on plant physiology and yield. However, routine safety analyses do not assess the response of GM plants under different environmental stress conditions. In the context of climate change, the combination of abiotic stressors is a reality in agroecosystems. Therefore, the aim of this study was to analyze the metabolic cost by assessing the proteomic profiles of GM soybean varieties under glyphosate spraying and water deficit conditions compared to their non-transgenic conventional counterparts. We found evidence of cumulative adverse effects that resulted in the reduction of enzymes involved in carbohydrate metabolism, along with the expression of amino acids and nitrogen metabolic enzymes. Ribosomal metabolism was significantly enriched, particularly the protein families associated with ribosomal complexes L5 and L18. The interaction network map showed that the affected module representing the ribosome pathway interacts strongly with other important proteins, such as the chloro-plastic gamma ATP synthase subunit. Combined, these findings provide clear evidence for increasing the metabolic costs of GM soybean plants in response to the accumulation of stress factors. First, alterations in the ribosome pathway indicate that the GM plant itself carries a metabolic burden associated with the biosynthesis of proteins as effects of genetic transformation. GM plants also showed an imbalance in energy demand and production under controlled conditions, which was increased under drought conditions. Identifying the consequences of altered metabolism related to the interaction between plant transgene stress responses allows us to understand the possible effects on the ecology and evolution of plants in the medium and long term and the potential interactions with other organisms when these organisms are released in the environment.

show abstract

Influence of Glyphosate on Susceptible and Resistant Ryegrass Populations to Herbicide

Cited by 9 publications

References 34 publications

Glyphosate hormesis mitigates the effect of water deficit in safflower (Carthamus tinctorius L.)

Glyphosate hormesis mitigates the effect of water deficit in safflower (Carthamus tinctorius L.)

Glyphosate’s Synergistic Toxicity in Combination with Other Factors as a Cause of Chronic Kidney Disease of Unknown Origin

Proteomic Profile of Glyphosate-Resistant Soybean under Combined Herbicide and Drought Stress Conditions

Contact Info

Product

Resources

About