Hydrophilic polymer film coat as a micro-container of individual seed facilitates safe storage of tomato seeds

Jacob, Sherry Rachel; Kumar, Mahesh; Varghese, Eldho; Sinha, Suparna

doi:10.1016/j.scienta.2016.04.010

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…The classification of seed coating types is usually based on the weight, size, and grouping properties of the coated seeds. Most studies do not specify the type of coating used, yet when reported, the most frequent are seed dressing, film coating, and pelleting (Hartley et al, 2004; Shaharoona et al, 2008; Domaradzki et al, 2012; Accinelli et al, 2016; Celly et al, 2016; Jacob et al, 2016; Shahzad et al, 2017; Accinelli et al, 2018b; Rocha et al, 2019a). Moreover, other terms such as slurry coating can also be found in the literature related to microbial seed coating (Pill et al, 2009; Hartley et al, 2013; Rozier et al, 2017; Rehman et al, 2018).…”

Section: Seed Coating With Beneficial Microbesmentioning

confidence: 99%

Seed Coating: A Tool for Delivering Beneficial Microbes to Agricultural Crops

et al. 2019

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Plant beneficial microbes (PBMs), such as plant growth-promoting bacteria, rhizobia, arbuscular mycorrhizal fungi, and Trichoderma, can reduce the use of agrochemicals and increase plant yield, nutrition, and tolerance to biotic–abiotic stresses. Yet, large-scale applications of PBM have been hampered by the high amounts of inoculum per plant or per cultivation area needed for successful colonization and consequently the economic feasibility. Seed coating, a process that consists in covering seeds with low amounts of exogenous materials, is gaining attention as an efficient delivery system for PBM. Microbial seed coating comprises the use of a binder, in some cases a filler, mixed with inocula, and can be done using simple mixing equipment (e.g., cement mixer) or more specialized/sophisticated apparatus (e.g., fluidized bed). Binders/fillers can be used to extend microbial survival. The most reported types of seed coating are seed dressing, film coating, and pelleting. Tested in more than 50 plant species with seeds of different dimensions, forms, textures, and germination types (e.g., cereals, vegetables, fruits, pulses, and other legumes), seed coating has been studied using various species of plant growth-promoting bacteria, rhizobia, Trichoderma, and to a lesser extent mycorrhizal fungi. Most of the studies regarding PBM applied via seed coating are aimed at promoting crop growth, yield, and crop protection against pathogens. Studies have shown that coating seeds with PBM can assist crops in improving seedling establishment and germination or achieving high yields and food quality, under reduced chemical fertilization. The right combination of biological control agents applied via seed coating can be a powerful tool against a wide number of diseases and pathogens. Less frequently, studies report seed coating being used for adaptation and protection of crops under abiotic stresses. Notwithstanding the promising results, there are still challenges mainly related with the scaling up from the laboratory to the field and proper formulation, including efficient microbial combinations and coating materials that can result in extended shelf-life of both seeds and coated PBM. These limitations need to be addressed and overcome in order to allow a wider use of seed coating as a cost-effective delivery method for PBM in sustainable agricultural systems.

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Section: Seed Coating With Beneficial Microbesmentioning

confidence: 99%

Seed Coating: A Tool for Delivering Beneficial Microbes to Agricultural Crops

et al. 2019

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“…It is clear that nanotechnology can and will play a significant role in this effort, particularly with regard to the inefficiencies in agrichemical delivery and food safety. − Toward this end, research into “sustainable nano-enabled agriculture” has recently received significant attention to reduce the inefficiencies of fertilizers/micronutrients and pesticides. − An emerging research area in agrichemical delivery is the development of novel nanoenabled seed coating platforms for precise and targeted delivery of agrichemicals. Such seed coating approaches can be used to prevent the seed infection from microorganisms/pathogens during storage and germination, as well as to biofortify the seeds to enhance germination, seedling development, and overall crop productivity. − Conventional polymer film seed coatings are currently pursued by the industry using a fluidized bed, rotary coater, or rotating pan approaches . However, such current coating approaches result in the formation of dense nonporous films, which may limit the gas and water exchange, resulting in negative effects on seed germination and seedling development .…”

Section: Introductionmentioning

confidence: 99%

Enhancing Agrichemical Delivery and Seedling Development with Biodegradable, Tunable, Biopolymer-Based Nanofiber Seed Coatings

Aytaç

et al. 2020

ACS Sustainable Chem. Eng.

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One of the challenges in agriculture consists of the inefficiencies in agrichemical delivery and utilization. Herein, a biodegradable, tunable, biopolymer-based nanoplatform was developed as seed coating to enhance agrichemical delivery and seedling development. The nanofibers are synthesized using electrospinning of biopolymer blends without any toxic chemicals or post-treatment and enable tunable agrichemical release by modulating the polymer composition and hydrophilicity of nanofibers. The germination and subsequent growth of different nanofiber-coated seeds (tomato and lettuce) as a function of agrichemical release kinetics were investigated in greenhouse studies, in the presence or absence of a fungal pathogen (Fusarium species). Results from the greenhouse studies indicate the efficacy of such nanoenabled seed coating approach due to the precise delivery of agrichemical at the right place while utilizing a miniscule amount of agrichemical. The various Cu-release nanofiber coatings appeared to promote seed germination, particularly in the diseased media conditions. This more rapid germination led to increased seedling biomass for both plants (12−29%) in the healthy media conditions. Such seed nanocoating approach might be used in pathogen infested soil conditions to increase production yields. The developed nanofiber seed coating approach brings precision to agrichemical delivery and significantly improves germination and seedling biomass for model seeds compared to conventional film coating approaches utilized by the industry, owing to its unique nanofibrous structure and controlled release kinetics.

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“…Seed germination and seedling establishment are key factors in crop yield and both are heavily affected by seed disease. An effective strategy to control seed disease and hence increase seed performance is to treat seeds before sowing by coating them with active agents to control moisture, plant growth, pest damage and disease . With this approach active ingredients (AIs) are applied specifically to target the seed during germination to maximize their performance while at the same time minimizing human exposure, environmental pollution and costs.…”

Section: Introductionmentioning

confidence: 99%

In situ chemically specific mapping of agrochemical seed coatings using stimulated Raman scattering microscopy

Wang

Moorhouse

Stain

et al. 2018

Journal of Biophotonics

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Providing sufficient, healthy food for the increasing global population is putting a great deal of pressure on the agrochemical industry to maximize crop yields without sustaining environmental damage. The growth and yield of every plant with sexual reproduction, depends on germination and emergence of sown seeds, which is affected greatly by seed disease. This can be most effectively controlled by treating seeds with pesticides before they are sown. An effective seed coating treatment requires a high surface coverage and adhesion of active ingredients onto the seed surface and the addition of adhesive agents in coating formulations plays a key role in achieving this. Although adhesive agents are known to enhance seed germination, little is understood about how they affect surface distribution of actives and how formulations can be manipulated to rationally engineer seed coating preparations with optimized coverage and efficacy. We show, for the first time, that stimulated Raman scattering microscopy can be used to map the seed surface with microscopic spatial resolution and with chemical specificity to identify formulation components distributed on the seed surface. This represents a major advance in our capability to rationally engineer seed coating formulations with enhanced efficacy.

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Hydrophilic polymer film coat as a micro-container of individual seed facilitates safe storage of tomato seeds

Cited by 6 publications

References 18 publications

Seed Coating: A Tool for Delivering Beneficial Microbes to Agricultural Crops

Seed Coating: A Tool for Delivering Beneficial Microbes to Agricultural Crops

Enhancing Agrichemical Delivery and Seedling Development with Biodegradable, Tunable, Biopolymer-Based Nanofiber Seed Coatings

In situ chemically specific mapping of agrochemical seed coatings using stimulated Raman scattering microscopy

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