Can low doses of glyphosate stimulate common bean growth?

Bortolheiro, Fernanda Pacheco de Almeida Prado; Brunelli-Nascentes, Marcela Cristina; Boaro, Carmen Sílvia Fernandes; Silva, Marcelo de Almeida

doi:10.1080/03601234.2020.1853456

Cited by 13 publications

(5 citation statements)

References 22 publications

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“…ha −1 . Bortolheiro et al 14 . found stimuli of 24% in DMM when plants were subjected to a low dose of 36 g a.e.…”

Section: Discussionmentioning

confidence: 99%

“…There is evidence of improvements in the growth and development of plants under water deficit following conditioning by treatment with low doses of glyphosate. 14,27,31,32,43 These authors proposed that inhibition of EPSPS by low doses of glyphosate might confer greater elasticity to cell walls by preferentially decreasing lignin biosynthesis, allowing an increase in cell elongation. Our results prove that glyphosate hormesis in plants conditioned to water deficit could be an important agronomic factor.…”

Section: Discussionmentioning

confidence: 99%

“…[4][5][6] The stimulatory effect of treatment with low doses of chemicals on the growth of various plant species has been the focus of several studies. [5][6][7][8][9][10][11][12][13][14] In this context, the term hormesis refers to an adaptive/protective response caused by chemical stressors when used in low doses in plants. 15 The most widely used herbicide in the world, glyphosate, causes hormesis, 1,3,9,16,17 and studies are ongoing to elucidate the ability of low doses of glyphosate to stimulate plant growth 13 and improve agricultural sustainability by reducing environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

“…Although our research group has provided information on the stimulating effect of low doses of glyphosate on Commelia benghalensis, Eucalyptus grandis, maize, Pinus caribea, soybean, 5 sugarcane, [6][7][8] Urochloa decumbens, 9,13 sugarcane, eucalyptus, 11 and Phaseolus vulgaris, 14 deeper knowledge of glyphosate-caused hormesis on C. tinctorius under water deficiency conditions is needed, because water deficit is the most unpredictable abiotic stress in terms of occurrence, severity, distribution and duration. 30 Studies on the interaction between water deficit and glyphosate hormesis in plants are rare; however, previous studies with Phaseolus vulgaris have shown a greater tolerance to water stress in the presence of low doses of glyphosate.…”

Section: Introductionmentioning

confidence: 99%

“…The stimulatory effect of treatment with low doses of chemicals on the growth of various plant species has been the focus of several studies 5‐14 . In this context, the term hormesis refers to an adaptive/protective response caused by chemical stressors when used in low doses in plants 15 .…”

Section: Introductionmentioning

confidence: 99%

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

Santos

Silva

Amorim

et al. 2021

Pest Management Science

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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

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“…ha −1 . Bortolheiro et al 14 . found stimuli of 24% in DMM when plants were subjected to a low dose of 36 g a.e.…”

Section: Discussionmentioning

confidence: 99%