Impact of glyphosate on morphophysiological traits of RR corn plants under drought stress

Neto, Sebastião Soares de Oliveira; Bossolani, João William; Freitas, Sérgio Esteves de; Gazola, Bruno; Gonçalves, Ana Stella Freire; Zóz, Tiago; Calonego, Juliano Carlos

doi:10.1007/s11738-022-03508-1

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…Previous studies on seedling emergence and growth in field peas [38], Zea mays, Glycine max, and Sorghum halepense [39] determined the effects of glyphosate application pre-harvest and at various stages of maturity, revealing that shoot meristematic cell moisture above 40% reduced seedling germination and fresh weight of shoots [40]. Furthermore, the negative impact of glyphosate exposure was observed in a Zea mays cultivar, with a decrease of 20.8% in root length [41]. Additionally, in a study on Pisum sativum, the phytotoxicity of different doses of glyphosate was evaluated at germination and seedling stages.…”

Section: Discussionmentioning

confidence: 98%

Morpho-Biochemical Responses of Brassica Coenospecies to Glyphosate Exposure at Pre- and Post-Emergence Stages

et al. 2023

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Crop wild relatives (CWRs) belonging to the Brassicaceae family possess extensive genetic diversity and have frequently been utilized in the enhancement of cultivated Brassica species. However, their tolerance to glyphosate, a widely used herbicide, has remained unknown. Our study examined the glyphosate response of 20 genotypes from the Brassicaceae family, which included genotypes within the U triangle and their wild relatives. We evaluated their behaviour based on morpho-biochemical responses, specifically focusing on the traits of germination percentage, root length, and survival percentage. By calculating the mean membership function value (MFV) for each genotype’s response to these traits, we classified them into three distinct groups: susceptible, moderately tolerant, and tolerant. Among these genotypes, Brassica rapa (NRCPB rapa 8) demonstrated tolerance to glyphosate, as indicated by their mean MFV value of 0.68. Moderate tolerance to glyphosate was observed in Brassica juncea (Pusa Jaikisan) with a mean MFV of 0.52. Conversely, Diplotaxis catholica, Diplotaxis muralis, and Enarthrocarpus lyratus were susceptible, with mean MFV values of 0.37, 0.35, and 0.34, respectively. These findings revealed varying levels of response to glyphosate among these genotypes, with some displaying significant tolerance. The study provides valuable insights into the herbicide tolerance of Brassica CWRs and emphasizes the potential use of phenotypic and biochemical markers in evaluating herbicide tolerance.

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Section: Discussionmentioning

confidence: 98%

Morpho-Biochemical Responses of Brassica Coenospecies to Glyphosate Exposure at Pre- and Post-Emergence Stages

et al. 2023

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“…Various physiological and biochemical processes in plants, for instance, photosynthesis, respiration, and hormonal signals can be changed by herbicide application (de Oliveira Neto et al., 2022; Vila‐Aiub et al., 2009). Plant cyclic nucleotide‐gated channels (CNGCs) are one of the essential pathways for calcium ion conduction in signal transduction and are involved in a variety of physiological processes, such as abiotic stress responses and immune regulation (Nawaz et al., 2014; Talke et al., 2003).…”

Section: Introductionmentioning

confidence: 99%

The herbicide bensulfuron‐methyl inhibits rice seedling development by blocking calcium ion flux in the OsCNGC12 channel

Guo

Lin

et al. 2023

The Plant Journal

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SUMMARYBensulfuron‐methyl (BSM) is a widely used herbicide in rice cultivation, but the mechanisms underlying its efficient uptake in rice are poorly understood. In this study, a yeast library expressing 1385 rice transporters was employed to screen proteins sensitive to BSM. As a result, a cyclic nucleotide‐gated channel (CNGC) protein, OsCNGC12, was identified. By inactivating the OsCNGC12 function via gene editing, we developed BSM‐tolerant rice lines. Our results showed that the OsCNGC12 mutant rice not only reduced BSM uptake but also promoted Ca2+ influx in the roots, leading to enhanced non‐target‐site tolerance to BSM. OsCNGC12 is localized in the plasma membrane and is abundantly expressed in the root caps, root vascular bundles, stems, and leaves, indicating its vital role in the distribution of BSM in rice. The indispensability of His‐236, Gln‐240, and Arg‐268 in BSM perception in yeast was demonstrated through targeted mutagenesis of OsCNGC12. Furthermore, we developed a BSM seed coating agent for OsCNGC12 mutant rice, providing a simplified and cost‐effective means of weed control in direct‐seeded rice. Inclusion, this study showed that disruption of OsCNGC12 confers non‐target‐site tolerance to BSM in rice and has the potential for developing BSM‐resistant rice varieties.

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Glyphosate in the environment: interactions and fate in complex soil and water settings, and (phyto) remediation strategies

Mohy-Ud-Din,

Bashir,

Akhtar

et al. 2023

International Journal of Phytoremediation

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Impact of glyphosate on morphophysiological traits of RR corn plants under drought stress

Cited by 4 publications

References 33 publications

Morpho-Biochemical Responses of Brassica Coenospecies to Glyphosate Exposure at Pre- and Post-Emergence Stages

Morpho-Biochemical Responses of Brassica Coenospecies to Glyphosate Exposure at Pre- and Post-Emergence Stages

The herbicide bensulfuron‐methyl inhibits rice seedling development by blocking calcium ion flux in the OsCNGC12 channel

Glyphosate in the environment: interactions and fate in complex soil and water settings, and (phyto) remediation strategies

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