Copper-fixed quat: a hybrid nanoparticle for application as a locally systemic pesticide (LSP) to manage bacterial spot disease of tomato

Özcan, Ali; Young, Mikaeel; Lee, Briana; Liao, Ying-Yu; Silva, Susannah Da; Godden, Dylan; Colee, James; Huang, Ziyang; Mendis, Hajeewaka C.; Campos, Maria Gabriela Nogueira; Jones, Jeffrey B.; Freeman, Joshua H.; Paret, Mathews L.; Tetard, Laurene; Santra, Swadeshmukul

doi:10.1039/d0na00917b

Cited by 16 publications

(20 citation statements)

References 43 publications

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“…Similar to reports by Ozcan et al, DDAC's surfactant properties may reduce the surface tension of spray droplets on the leaf surface and thus may improve wetting/coverage of the formulation. 19 Upon improved wetting, the localized accumulation of Zn and DDAC in droplets may have been minimized, thus mitigating some of the tissue damage observed as necrotic spots. Similar results were reported by Fu et al where the addition of organosilicon prevented the phytotoxicity typically observed after successive foliar treatments of 250 ppm zinc chloride solutions on 1 year old citrus seedlings.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…19 The use of surfactants in agrochemical formulations is common to improve the efficacy of embodied pesticides. 11,13,16,19 When considering a homologues series of Quats, wetting is typically increased with the increasing size of alkyl groups. 14 Due to increased and more uniform coverage, wetting agents may promote the prolonged retention of actives on the target after foliar application under field conditions.…”

Section: ■ Introductionmentioning

confidence: 99%

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Multifunctional Surface, Subsurface, and Systemic Therapeutic (MS3T) Formulation for the Control of Citrus Canker

Smith¹,

Campos²,

Özcan³

et al. 2021

J. Agric. Food Chem.

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A multifunctional surface, subsurface and systemic therapeutic (MS3T) formulation comprised of two bactericides, both didecyldimethylammonium chloride (DDAC) and a zinc (Zn)-chelate, was developed as an alternative to copper pesticides for crop protection. Agricultural grade chemicals were used to prepare MS3T formulations. Minimal inhibitory concentration (MIC) was determined to be tested in vitro against Xanthomonas alfalfae subsp. citrumelonis (herein called Xa), Escherichia coli (E. coli), and Pseudomonas syringae (Ps). Assessment of the phytotoxic potential was carried out on tomato under greenhouse conditions. Moreover, field trials were conducted during three consecutive years on grapefruit (Chrysopelea paradise) groves to evaluate efficacy against citrus canker (Xanthomonas citri subsp. citri), scab (Elsinoe fawcetti), and melanose (Diaporthe citri). In addition to disease control, improvements to both fruit yield and quality were observed likely due to the nutritional activity of MS3T via the sustained release of plant nutrients (Zn and nitrogen). Zn residues of leaf tissues were analyzed via atomic absorption spectroscopy (AAS) at various time points before and after MS3T foliar applications throughout the duration of the 2018 field trial. Field trial results demonstrated MS3T to be an effective alternative to copper (Cu)-based formulations for the control of citrus canker.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Multifunctional Surface, Subsurface, and Systemic Therapeutic (MS3T) Formulation for the Control of Citrus Canker

Smith¹,

Campos²,

Özcan³

et al. 2021

J. Agric. Food Chem.

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“…15 In addition to their application as nanocarriers for pesticide substances and plant nutrition, nanoparticles can act as vectors of genetic material to cells, overcoming the limitations of conventional transformation methods. 16 The nanomaterials can perform the delivery of different biomolecules such as DNA, miRNA, siRNA, ribonucleoproteins, etc. These systems are considered noncytotoxic vectors and present biocompatibility.…”

Section: ■ Introductionmentioning

confidence: 99%

“…A variety of nanoplatforms, commonly studied for applications in the fields of materials, electronic devices, and medicine, have been attracting interest for applications in agriculture . In addition to their application as nanocarriers for pesticide substances and plant nutrition, nanoparticles can act as vectors of genetic material to cells, overcoming the limitations of conventional transformation methods . The nanomaterials can perform the delivery of different biomolecules such as DNA, miRNA, siRNA, ribonucleoproteins, etc.…”

Section: Introductionmentioning

confidence: 99%

Nanocarrier-Mediated Delivery of miRNA, RNAi, and CRISPR-Cas for Plant Protection: Current Trends and Future Directions

Mujtaba

Wang

Carvalho

et al. 2021

ACS Agric. Sci. Technol.

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Current trends in plant genetic transformation technologies, i.e., designing and applying molecules like miRNA, RNAi, and CRISPR-Cas, largely enable researchers to target specific sites in the plant genome to avert the growing biotic and abiotic threats to plants. However, the delivery of these molecules through conventional techniques brings an array of drawbacks such as low efficiency due to the cell wall barrier, tissue damage that leads to browning or necrosis, degradation of these biomolecules by physiological conditions (high temperature, harsh pH, and light), and plant-specific protocols. The advancements in nanotechnology offer an excellent alternative for the safe and highly efficient delivery of biomolecules such as miRNA, CRISPR-Cas, and RNAi without damaging the plant tissues. Nanoparticle (polymeric, metallic, magnetic, silica, carbon, etc.)-based delivery of biomolecules can be efficiently utilized especially for plant protection applications. Herein, we present a comprehensive overview of current trends (with a focus on the previous five years) in nanoparticle-based delivery of miRNA, RNAi, CRISPR-Cas and simillar biomolecules for plant protection applications. In addition, a future perspective focuses on the research gaps and unexplored potentials of nanoparticles for the delivery of biomolecules.

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“…In this way, nanotechnology could represent a great breakthrough in sustainable pesticide formulation [ 2 , 37 , 38 ]. Antimicrobial and resistance inductance properties of several nanoparticles synthetized from inorganic materials, such as zinc, copper, magnesium, silver, silica and graphene, were already positively assayed against tomato bacterial spot and speck diseases [ 39 , 40 , 41 , 42 , 43 ]. Furthermore, many materials can be engineered to obtain carriers at the nanoscale level, which can be functionalized with active principles.…”

Section: Introductionmentioning

confidence: 99%

A Green Nanostructured Pesticide to Control Tomato Bacterial Speck Disease

et al. 2021

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Bacterial speck disease, caused by Pseudomonas syringae pv. tomato (Pst), is one of the most pervasive biological adversities in tomato cultivation, in both industrial and in table varieties. In this work synthesis, biochemical and antibacterial properties of a novel organic nanostructured pesticide composed of chitosan hydrochloride (CH) as active ingredient, cellulose nanocrystals (CNC) as nanocarriers and starch as excipient were evaluated. In order to study the possibility of delivering CH, the effects of two different types of starches, extracted from a high amylose bread wheat (high amylose starch—HA Starch) and from a control genotype (standard starch—St Starch), were investigated. Nanostructured microparticles (NMP) were obtained through the spray-drying technique, revealing a CH loading capacity proximal to 50%, with a CH release of 30% for CH-CNC-St Starch NMP and 50% for CH-CNC-HA Starch NMP after 24 h. Both NMP were able to inhibit bacterial growth in vitro when used at 1% w/v. Moreover, no negative effects on vegetative growth were recorded when NMP were foliar applied on tomato plants. Proposed nanostructured pesticides showed the capability of diminishing Pst epiphytical survival during time, decreasing disease incidence and severity (from 45% to 49%), with results comparable to one of the most used cupric salt (hydroxide), pointing out the potential use of CH-CNC-Starch NMP as a sustainable and innovative ally in Pst control strategies.

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Copper-fixed quat: a hybrid nanoparticle for application as a locally systemic pesticide (LSP) to manage bacterial spot disease of tomato

Abstract: A hybrid core–shell silica nanoparticle system integrating Cu nanoclusters and Quat combats resistance development of Xanthomonas perforans responsible for bacterial spot disease of tomatoes.

Cited by 16 publications

References 43 publications

Multifunctional Surface, Subsurface, and Systemic Therapeutic (MS3T) Formulation for the Control of Citrus Canker

Multifunctional Surface, Subsurface, and Systemic Therapeutic (MS3T) Formulation for the Control of Citrus Canker

Nanocarrier-Mediated Delivery of miRNA, RNAi, and CRISPR-Cas for Plant Protection: Current Trends and Future Directions

A Green Nanostructured Pesticide to Control Tomato Bacterial Speck Disease

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