Anti- Rhizoctonia solani activity by polymeric quaternary ammonium salt and its mechanism of action

Dong, Chenyun; You, Wanling; Liuyang, Ruqi; Lei, Yufeng; Zhang, Anqiang; Lin, Yaling

doi:10.1016/j.reactfunctpolym.2018.01.020

Cited by 19 publications

(10 citation statements)

References 35 publications

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“…The antifungal results of CK, CF, WH, Cu1, Cu2, Cu3, Cu1-WH, Cu2-WH, and Cu3-WH are shown in Figure 7, and the antifungal abilities of the above treatments were evaluated by observing the clear halo. 54 Compared with the CK (Figure 7a), the clear halo was observed in CF (Figure 7b). Cu1 and Cu2 showed no clear halo, while a partial halo was exhibited in Cu3 (Figure 7c−e).…”

Section: Characteristics Of Cu-whmentioning

confidence: 91%

Cu(II)-Based Water-Dispersible Humic Acid: Synthesis, Characterizations, and Antifungal and Growth-Promoting Performances

Tang

Hou

Yang

et al. 2019

J. Agric. Food Chem.

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The complex synthesis process, low utilization, and single function of fungicides have seriously hindered the development of fungicides in resistance to rice sheath blight. Here, an inexpensive and multifunctional Cu(II)-based water-dispersible humic acid (Cu-WH) fungicide with growth-promoting ability was developed with a simple method. A 3D molybdate carbon hierarchical nanosphere (MoO2-C-HN) catalyst was successfully synthesized using a green route and applied in a solid-phase activation of lignite to obtain water-dispersible humic acid. Cu(II)-based water-dispersible humic acid (Cu-WH) was then formed through a simple reaction of Cu(II) and the humic acid. The resultant Cu-WH showed strong antifungal performance against Rhizoctonia solani in laboratory incubation experiments. After being treated with Cu3-WH (0.1 mg L–1), the control efficiency of rice sheath blight at 1, 3, and 5 days after infection was 90.54%, 78.96%, and 66.31%, respectively. It also enhanced the water-holding capacity of the substrate and thus effectively improved the growth of rice seedlings. In comparison to commercial rice seedling substrate, the substrate treated with 8 wt % of Cu3-WH increased plant height, stem diameter, fresh weight, and chlorophyll content by 19.23%, 35.91%, 14.52%, and 42.85%, respectively. The newly developed Cu-WH thus can be used as a novel low-cost efficient fungicide and growth stimulator to treat rice sheath blight as well as to increase rice production.

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Section: Characteristics Of Cu-whmentioning

confidence: 91%

Cu(II)-Based Water-Dispersible Humic Acid: Synthesis, Characterizations, and Antifungal and Growth-Promoting Performances

Tang

Hou

Yang

et al. 2019

J. Agric. Food Chem.

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“…21−24 Compared with small-molecule antimicrobial agents, QPEI has many advantages, such as no volatility, chemical stability, minimized residual toxicity, enhanced biological activity, and extended residence time. 25 groups of acidic phospholipids in the cell membrane, leading to the loss of membrane integrity and then bacterial cell death. 26 This special contact-killing mechanism makes QPEI have high antibacterial activity with a great contact area.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a kind of cationic polymer, quaternary ammonium polyethyleneimine (QPEI), has attracted much more attention than ever before due to its broad-spectrum antibacterial activity against Gram-positive and Gram-negative bacteria. − Compared with small-molecule antimicrobial agents, QPEI has many advantages, such as no volatility, chemical stability, minimized residual toxicity, enhanced biological activity, and extended residence time . QPEI with positive charges can be adsorbed onto the negatively charged bacterial cell membrane through electrostatic interactions, and the quaternary nitrogen of QPEI can interact with the polar head groups of acidic phospholipids in the cell membrane, leading to the loss of membrane integrity and then bacterial cell death .…”

Section: Introductionmentioning

confidence: 99%

Functionalized Silver Nanocapsules with Improved Antibacterial Activity Using Silica Shells Modified with Quaternary Ammonium Polyethyleneimine as a Bacterial Cell-Targeting Agent

Niu

Tang

et al. 2021

J. Agric. Food Chem.

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Silver nanoparticles (AgNPs) have remarkable and broad-spectrum antibacterial activities against Gram-positive (G+) and Gram-negative bacteria (G−). However, the negative surface potential of AgNPs limits their antibacterial activities due to the electrostatic repulsion with the negatively charged bacterial cell membrane. To address the limitation, AgNPs were loaded in the mesoporous silica nanoparticles by preparing silver core–mesoporous silica shell nanocapsules (Ag@MSNs), and then, a cationic antibacterial polymer, quaternary ammonium polyethyleneimine (QPEI), was used to modify Ag@MSNs for improving their surface potential and antibacterial activities. The results showed that the obtained Ag@MSN-QPEI exhibited a high positive surface potential (+39.6 mV) and a strong electrostatic attraction with Pseudomonas syringae pv. lachrymans cells in coculture, resulting in an excellent bacterial cell-targeting effect. At the same concentration, Ag@MSN-QPEI exhibited less silver content (reducing the silver content of Ag@MSNs by 19%), higher antibacterial activities, and longer effective duration against Clavibacter michiganensis subsp. michiganensis (G+) and P. syringae pv. lachrymans (G−) than Ag@MSNs and QPEI alone. The excellent bacterial cell-targeting effect and synergistic antibacterial action combined with QPEI accounted for the significantly enhanced antibacterial activities of Ag@MSN-QPEI. Therefore, using a cationic antibacterial polymer to confer the bacterial cell-targeting effect and synergistic antibacterial action would be extended to other antimicrobial materials.

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“…Its antimicrobial mechanisms can be interpreted as follows: the quaternary ammonium head of CTAB enables the molecule to quickly adsorb onto the cell surface. Thus, its hydrophobic moieties interact with the phospholipid bilayer of the cell membrane and destroy the self-assembled structure of the pathogeny cell membrane, leading to a disruption of the cell membrane and a release of cell constituents, which eventually leads to cell death [18,19]. CTAB has a relatively low toxicity and is hard to be resisted by microorganisms [17,20].…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanocrystal Surface Cationization: A New Fungicide with High Activity against Phycomycetes capsici

Xiang

Liao

et al. 2019

Molecules

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At present, the management of Phytophthora capsici (P. capsici) mainly relies on chemical pesticides. However, along with the resistance generated by P. capsici to these chemical pesticides, the toxicity and non-degradability of this chemical molecule may also cause serious environmental problems. Herein, a new bio-based nano-antifungal material (CNC@CTAB) was made with coating hexadecyl trimethyl ammonium bromide (CTAB) on the surface of a cellulose nanocrystal (CNC). This material was then applied to the prevention of P. capcisi. This particle was facilely fabricated by mixing CTAB and sulfuric group modified CNC in an aqueous solvent. Compared to pure CTAB, the enrichment of CTAB on the CNC surface showed a better anti-oomycete activity both in vitro and in vivo. When CNC@CTAB was applied on P. capsici in vitro, the inhibition rate reached as high as 100%, while on the pepper leaf, the particle could also efficiently prevent the infection of P. capsici, and achieve a disease index as low as zero Thus, considering the high safety of CNC@CTAB in agricultural applications, and its high anti-oomycete activity against P. capsici, we believe that this CNC@CTAB has great application potential as a new green nano-fungicide in P. capsici management during the production of peppers or other vegetables.

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Anti- Rhizoctonia solani activity by polymeric quaternary ammonium salt and its mechanism of action

Cited by 19 publications

References 35 publications

Cu(II)-Based Water-Dispersible Humic Acid: Synthesis, Characterizations, and Antifungal and Growth-Promoting Performances

Cu(II)-Based Water-Dispersible Humic Acid: Synthesis, Characterizations, and Antifungal and Growth-Promoting Performances

Functionalized Silver Nanocapsules with Improved Antibacterial Activity Using Silica Shells Modified with Quaternary Ammonium Polyethyleneimine as a Bacterial Cell-Targeting Agent

Cellulose Nanocrystal Surface Cationization: A New Fungicide with High Activity against Phycomycetes capsici

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