Application of a Plant Biostimulant To Improve Maize (<i>Zea mays</i>) Tolerance to Metolachlor

Panfili, Ivan; Bartucca, Maria Luce; Marrollo, Giovanni; Povero, Giovanni; Buono, Daniele Del

doi:10.1021/acs.jafc.9b04949

Cited by 44 publications

(36 citation statements)

References 53 publications

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“…MDA is a lipid peroxidation product that accumulates in oxidative perturbations, even though it is commonly produced in mitochondria and chloroplasts, where metabolic processes characterized by high electron flow occur [6,29]. The results of our study evidenced that salinity decisively increased the amount of MDA when maize was treated with NaCl alone (Figure 2B), but it decreased when the samples were biostimulated.…”

Section: Discussionmentioning

confidence: 59%

“…The MDA content was determined in maize shoots (0.5 g FW) which were extracted in a solution containing 10% (w/v) trichloroacetic acid and 0.25% (w/v) thiobarbituric. The suspension was then centrifuged for 20 min at 10,000× g [29]. After that, the MDA content was determined spectrophotometrically at 532 and 600 nm and referred to the samples' FW.…”

Section: Hydrogen Peroxide (H 2 O 2 ) and Malondialdehyde (Mda) Contentsmentioning

confidence: 99%

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Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

D’Amato

Buono

2021

Agronomy

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Salinity is considered among the abiotic stresses most impacting agriculture for its ability to interfere with crop development and quality. For this reason, practices and innovations that could contain the deleterious effects of such stress are of pivotal importance for maintaining acceptable crop yields. In this context, this work has concerned the study of severe salt stress (100 mM NaCl) on maize seedlings and the effects of a plant biostimulant (Megafol–Meg) in helping plants to cope with this adversity. Biomass production, pigments, the content Na+ and K+, the accumulation of hydrogen peroxide (H2O2) and lipid peroxidation products (MDA), total phenolic compounds (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), and 2,2-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) were investigated in control samples, in samples treated with NaCl alone, and in samples treated with NaCl in combination with the biostimulant. The results showed that the biostimulant significantly mitigated the impact of the salt stress on shoot length and fresh weight, on chlorophyll and carotenoid contents, and reduced the amount of Na+ taken up by the species. Regarding the oxidative status, the biostimulated samples revealed lower amounts of H2O2 and MDA, while maize seedlings grown with NaCl alone exhibited the highest increases in the TPC, ABTS, and FRAP. The explanation for these effects is provided by highlighting the effectiveness of the biostimulant in avoiding Na+ accumulation, which resulted in a lower content of H2O2, MDA, TPC, and antioxidant activity.

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Section: Discussionmentioning

confidence: 59%

Section: Hydrogen Peroxide (H 2 O 2 ) and Malondialdehyde (Mda) Contentsmentioning

confidence: 99%

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

D’Amato

Buono

2021

Agronomy

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“…When produced in high quantities, MDA is itself toxic to the cell. Increases in MDA content have been correlated with oxidative damage due to biotic and abiotic stresses [ 37 , 57 ]. In this context, our results indicate that zinc NPs led to a general reduction in MDA.…”

Section: Discussionmentioning

confidence: 99%

“…The supernatants were heated in a water bath (95 °C). After quick cooling, the MDA content was quantified spectrophotometrically [ 37 ].…”

Section: Methodsmentioning

confidence: 99%

Biogenic ZnO Nanoparticles Synthesized Using a Novel Plant Extract: Application to Enhance Physiological and Biochemical Traits in Maize

et al. 2021

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The need to increase crop productivity and resistance directs interest in nanotechnology. Indeed, biogenic metal oxide nanoparticles can promote beneficial effects in plants, while their synthesis avoids the environmental impacts of conventional synthetic procedures. In this context, this research aimed to synthesize biogenic zinc oxide nanoparticles (ZnO-NPs) using, for the first time, an extract of a wild and spontaneous aquatic species, Lemna minor (duckweed). The effectiveness of this biogenic synthesis was evidenced for comparison with non-biogenic ZnO-NPs (obtained without using the plant extract), which have been synthesized in this research. XRD (X-ray diffraction), FE-SEM (field emission gun electron scanning microscopy), EDX (energy dispersive x-ray spectroscopy), TEM (transmission electron microscope) and UV-vis (ultraviolet-visible spectrophotometry) showed the biogenic approach effectiveness. The duckweed extract was subjected to UHPLC-ESI/QTOF-MS (ultra high-pressure liquid chromatography quadrupole time of flight mass spectrometry) phenolic profiling. This untargeted characterization highlighted a high and chemically diverse content in the duckweed extract of compounds potentially implicated in nanoparticulation. From an application standpoint, the effect of biogenic nanoparticles was investigated on some traits of maize subjected to seed priming with a wide range of biogenic ZnO-NPs concentrations. Inductive effects on the shoot and root biomass development were ascertained concerning the applied dosage. Furthermore, the biogenic ZnO-NPs stimulated the content of chlorophylls, carotenoids, and anthocyanin. Finally, the study of malondialdehyde content (MDA) as a marker of the oxidative status further highlighted the beneficial and positive action of the biogenic ZnO-NPs on maize.

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“…The MDA content can reflect the degree of damage to the plant cell membrane and ROS. Under herbicide stress, the MDA content of maize (Panfili et al, 2019), wheat (Bao, 2020), and soybean (Li et al, 2020) was significantly increased. These results showed a significant increase in MDA concentration of foxtail millet under ≥30 g ai ha −1 pyrazosulfuron-methyl treatment, which indicated that the cell integrity of the foxtail millet leaves was compromised; however, with the progress of the fertility process, pyrazosulfuron-methyl at low doses (≤60 g ai ha −1 ) had a certain degree of relief on membrane damage, while there was no obvious recovery under 120 g ai ha −1 pyrazosulfuron-methyl treatment.…”

Section: Discussionmentioning

confidence: 99%

Effect of Pyrazosulfuron-Methyl on the Photosynthetic Characteristics and Antioxidant Systems of Foxtail Millet

Zhang

et al. 2021

Front. Plant Sci.

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Foxtail millet (Setaria Italica L.) plays a principal role in food security in Africa and Asia, but it is sensitive to a variety of herbicides. This study was performed to clarify whether pyrazosulfuron-methyl can be used in foxtail millet fields and the effect of pyrazosulfuron-methyl on the photosynthetic performance of foxtail millet. Two foxtail millet varieties (Jingu 21 and Zhangzagu 10) were subjected to five doses (0, 15, 30, 60, and 120 g ai ha−1) of pyrazosulfuron-methyl in pot and field experiments. The plant height, leaf area, stem diameter, photosynthetic pigment contents, gas exchange parameters, chlorophyll fluorescence parameters, antioxidant enzyme activities, and antioxidant contents at 7 and 15 days after pyrazosulfuron-methyl application, and the yield of foxtail millet were measured. The results suggested that pyrazosulfuron-methyl inhibited the growth of foxtail millet and reduced the photosynthetic pigment contents, photosynthetic rate, and photosynthetic system II activity. Similarly, pyrazosulfuron-methyl decreased the antioxidant enzyme activities and antioxidant contents. These results also indicated that the toxicity of pyrazosulfuron-methyl to foxtail millet was decreased gradually with the extension of time after application; however, the foxtail millet yield was still significantly reduced. Therefore, pyrazosulfuron-methyl is not recommended for application in foxtail millet fields.

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Application of a Plant Biostimulant To Improve Maize (Zea mays) Tolerance to Metolachlor

Cited by 44 publications

References 53 publications

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

Biogenic ZnO Nanoparticles Synthesized Using a Novel Plant Extract: Application to Enhance Physiological and Biochemical Traits in Maize

Effect of Pyrazosulfuron-Methyl on the Photosynthetic Characteristics and Antioxidant Systems of Foxtail Millet

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