Assessing Influence of Ozone in Tomato Seed Dormancy Alleviation

Sudhakar, N.; Nagendra-Prasad, D.; Mohan, N.; Hill, Bradford G.; Gunasekaran, M.; Murugesan, Kumarasamy

doi:10.4236/ajps.2011.23051

Cited by 27 publications

(20 citation statements)

References 32 publications

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“…Alternatively, it could be that ozone generates short-lived species inside the seed, which may be recognized as a signal for germination since the accumulation of ROS and peroxidation products is linked with seed dormancy alleviation [144]. As Sudhakar et al [157] pointed out, the production of hydrogen peroxide is observed in the early imbibition period of tomato seeds and nitric oxide, hydroxyl radicals and superoxide radicals accumulate during seed germination in different species. For this reason, many scientists speculate that H 2 O 2 and NO are the reason for the observed effects using plasma treatments, whether or not it is the short-lived species such as superoxide, hydroxyl and NO that are eventually converted into H 2 O 2 [55].…”

Section: Ros Entry and Involvement In Seed Developmentmentioning

confidence: 99%

“…Ji et al [168,169] also observed an increase in GA in spinach seeds but did not measure any other hormones. The increase in GA may be the result of plasmaderived ozone [157] although it is often speculated that it is specifically auxin and cytokinins that are affected, which are hormones that increase and stimulate cell division, proliferation and elongation. Perez Pizá et al [170] showed that with plasma treatment, there was a decrease in ABA and increase in IAA, a hormone which increases growth by regulating enzyme activity.…”

Section: Hormonesmentioning

confidence: 99%

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Mechanisms of Plasma-Seed Treatments as a Potential Seed Processing Technology

2021

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Plasma treatments are currently being assessed as a seed processing technology for agricultural purposes where seeds are typically subjected to pre-sowing treatments to improve the likelihood of timely and uniform germination. The aim of this review is to summarize the hypotheses and present the evidence to date of how plasma treatments affect seeds, considering that there is difficulty in standardizing the methodology in this interdisciplinary field given the plethora of variables in the experimental setup of the plasma device and handling of biological samples. The ever increasing interest for plasma agriculture drives the need for a review dedicated to seeds, which is understandable to an interdisciplinary audience of biologists and plasma physicists. Seeds are the first step of the agricultural cycle and at this stage, the plant can be given the highest probability of establishment, despite environmental conditions, to exploit the genetic potential of the seed. Furthermore, seedlings seem to be too sensitive to the oxidation of plasma and therefore, seeds seem to be the ideal target. This review intentionally does not include seed disinfection and sterilization due to already existing reviews. Instead, a summary of the mechanisms of how plasma may be affecting the seed and its germination and developmental properties will be provided and discussed.

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Section: Ros Entry and Involvement In Seed Developmentmentioning

confidence: 99%

Section: Hormonesmentioning

confidence: 99%

Mechanisms of Plasma-Seed Treatments as a Potential Seed Processing Technology

2021

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“…The change of wetting properties and structure of the coat increases the water uptake, the permeability of nutrients, or it accelerates the root formation . Furthermore, several effects on plant hormones, enzymes such as catalase, proteins, soluble sugar, and antioxidants are possible . The plasma treatment is not only affecting the seeds, but it also affects the environmental conditions, such as the pH‐value or the introduction of nitrate and nitrous species into the surrounding water.…”

Section: Plasma Technology For and In Agriculturementioning

confidence: 99%

White paper on the future of plasma science in environment, for gas conversion and agriculture

Brandenburg

Bogaerts

Bongers

et al. 2018

Plasma Processes & Polymers

124

103

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Climate change, environmental pollution control, and resource utilization efficiency, as well as food security, sustainable agriculture, and water supply are among the main challenges facing society today. Expertise across different academic fields, technologies, and disciplines is needed to generate new ideas to meet these challenges. This “white paper” aims to provide a written summary by describing the main aspects and possibilities of the technology. It shows that plasma science and technology can make significant contributions to address the mentioned issues. The paper also addresses to people in the scientific community (inside and outside plasma science) to give inspiration for further work in these fields.

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“…The effects of seeds exposure to ozone have been studied and a method that benefits the seed germination has been patented by Yvin and Coste (1995), and the another one by Klaptchuk (2004) to sterilize the seeds and degrade residual herbicides with use of ozone. It has been found that exposure to ozone favors the acceleration of tomato seed germination by breaking dormancy (Sudhakar et al, 2011); however, according to Wu et al (2006) the prolonged exposure to gas can reduce the germination of wheat seeds. Studies by Violleau et al (2008) have suggested that long periods of ozonization may be harmful for the quality of the seeds; however, which would a long period be has not been specified.…”

Section: Introductionmentioning

confidence: 99%

Treating sunflower seeds subjected to ozonization

et al. 2015

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Abstract:Sunflower crops (Helianthus annuus L.) are a source of pathogens that can be transmitted by means of the seeds. An alternative for the treatment of seeds can be the application of an ozone compound, which has been used in various segments to eliminate microorganisms. Three lots of the Embrapa 122 variety have been used to assess the efficacy of ozone to control pathogens in sunflowers seeds. To typify the profile of the lots we have determined the moisture content, the first germination counting, the germination, the germination speed index, emergence, initial stand, emergence speed index and health. The lots have been stored in an ozone-rich environment for periods of 20, 60 and 120 minutes and without ozone (control). After the treatments, the seeds were tested to assess their health and physiological quality through the said tests as well as a test for accelerating aging, tetrazolium and incidence and severity of fungi. It has been concluded that the treatment for H. annuus seeds, Embrapa 122 variety, with ozone concentration of 1741 ppmv (0.24 g/h), for 60 minutes, reduces the fungal presence of Alternaria sp., Fusarium sp., Aspergillus sp. and Penicillium sp. without affecting their physiological potential.

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Assessing Influence of Ozone in Tomato Seed Dormancy Alleviation

Abstract: The study was made on the role of ozone (O 3

Cited by 27 publications

References 32 publications

Mechanisms of Plasma-Seed Treatments as a Potential Seed Processing Technology

Mechanisms of Plasma-Seed Treatments as a Potential Seed Processing Technology

White paper on the future of plasma science in environment, for gas conversion and agriculture

Treating sunflower seeds subjected to ozonization

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