Plant Growth Response to Atmospheric Air Plasma Treatments of Seeds of 5 Plant Species

Shiratani, Masaharu; Sarinont, Thapanut; Amano, Tsuyoshi; Hayashi, Nobuya; Koga, Kazunori

doi:10.1557/adv.2016.37

Cited by 9 publications

(5 citation statements)

References 16 publications

(22 reference statements)

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“…In this field, scientists have observed that plasmas are able to sanitize food products and decontaminate plant seeds, fruits, and vegetables [5,[10][11][12]. Several authors have reported the efficient improvement of the germination and growth of agriculturally relevant plant species such as wheat [13][14][15][16][17][18][19][20][21][22][23][24], maize [14,25], lupine [14], soya beans [26,27], mung beans [28], radish [29][30][31], pea [32][33][34][35], and rice [29,36]. It has been shown that exposure to plasma improves water uptake by the seed [34,37], decreases the contact angle of the seed surface [23,37], and functionalizes the seed coat by attaching new chemical bonds to the surface [34,38].…”

Section: Introductionmentioning

confidence: 99%

A Coaxial Dielectric Barrier Discharge Reactor for Treatment of Winter Wheat Seeds

et al. 2020

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Non-thermal atmospheric pressure plasmas have been recently explored for their potential usage in agricultural applications as an interesting alternative solution for a potential increase in food production with a minor impact on the ecosystem. However, the adjustment and optimization of plasma sources for agricultural applications in general is an important study that is commonly overlooked. Thus, in the present work, a dielectric barrier discharge (DBD) reactor with coaxial geometry designed for the direct treatment of seeds is presented and investigated. To ensure reproducible and homogeneous treatment results, the reactor mechanically shakes the seeds during treatment, and ambient air is admixed while the discharge runs. The DBD, operating with argon and helium, produces two different chemically active states of the system for seed modification. The temperature evolution was monitored to guarantee a safe manipulation of seeds, whereas a physiological temperature was assured by controlling the exposure time. Both treatments led to a remarkable increase in wettability and acceleration in germination. The present study showed faster germination acceleration (60% faster after 24 h) and a lower water contact angle (WCA) (82% reduction) for winter wheat seeds by using the described argon discharge (with air impurities). Furthermore, the treatment can be easily optimized by adjusting the electrical parameters.

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Section: Introductionmentioning

confidence: 99%

A Coaxial Dielectric Barrier Discharge Reactor for Treatment of Winter Wheat Seeds

et al. 2020

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“…Authors have pointed the main role of radicals correlated with O 3 and NOx (nitrogen oxides) concentration, strongly indicating that optimum conditions depended on the species. They have also claimed the negligible influence of ions and photons [ 53 , 60 ]. Ono et al, 2017 have investigated positive inactivation effect of low-pressure RF oxygen and air plasmas on cabbage seed-borne bacteria: Xanthomonas campestris pv .…”

Section: Introductionmentioning

confidence: 99%

Effects of atmospheric pressure plasma jet operating with DBD on Lavatera thuringiaca L. seeds’ germination

et al. 2018

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The paper presents the results of an experiment on the effect of pre-sowing stimulation of seeds with atmospheric pressure plasma jet operating with dielectric barrier discharge (DBD plasma jet) on the process of germination of Thuringian Mallow (Lavatera thuringiaca L.). Five groups of seeds characterized by a different exposure times (1, 2, 5, 10 and 15 minutes) as well as untreated seeds—control were used. Pre-sowing plasma stimulation of seeds improved germination parameters such as: germination capacity and germination energy for all tested groups relative to control. The highest germination parameters were obtained for seeds stimulated with plasma for the exposure times of 2 and 5 min. The analysis of the contact surface angle indicated the decrease of its’ mean values upon seed stimulation while no statistical effects were observed. Analysis of the SEM scans revealed the increase in seed pattern intensity which could be attributed to removing of the surface parts of cuticle possibly covered with wax upon short time—2 and 5 min plasma treatment. Such a phenomenon can act similarly to mechanical scarification of seeds. Longer exposure of seeds to plasma resulted in affecting the deeper zone of cuticle and damage or fracture of some parts of the cuticle. Lower germination parameters of seeds upon longer exposure times to plasma may indicate mechanical damage of the seeds.

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“…Previous studies on plasma application in agriculture have demonstrated that the etching effect of O radicals plays an important role in plant growth enhancement. 17,18,[23][24][25][26][33][34][35][36][37][38] The CI was adopted to evaluate the oxidation efficiency of SA1011-3…”

Section: Characteristics Of Lf-microwave Hybrid Plasmamentioning

confidence: 99%

“…Recently, it was reported that the irradiation of atmospheric pressure non-thermal plasma on seeds and water for hydroponic improved seed germination and plant growth. [12][13][14][15][16][17][18][19][20][21][22] Atmospheric pressure non-thermal plasma is characterized by electrons having much higher energy than the ions or atoms, and this higher energy of electrons can produce sufficient reactive species, which allows many types of plasma surface processing without thermal damage. Reactive species produced by atmospheric pressure non-thermal plasma are considered to contribute to reducing pathogenic contamination and stimulating plant growth.…”

Section: Introductionmentioning

confidence: 99%

Effect of LF-microwave hybrid plasma treatment on radish seed germination and sprout growth

Tonmitr

Higa²,

Yonesu³

2022

Jpn. J. Appl. Phys.

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The atmospheric pressure non-thermal plasma generated by low-frequency (LF)-microwave hybrid discharge has been employed to investigate the effects of plasma treatment on the germination and growth of radish (Raphanus sativus L.) sprout seeds. The plasma generated with admixture discharge gas of Ar-O2 was adopted for the irradiation of seeds. SEM and EDX analyses were performed to elucidate the physical and chemical state changes of seed surfaces after plasma treatment. The reactive species produced in the plasma were investigated using optical emission spectroscopy and chemical indicator. The results demonstrate that higher reactive oxygen species were generated from the LF-microwave hybrid plasma compared to conventional LF plasma jet. Moreover, the higher germination percentage and shorter germination time were obtained with the LF-microwave hybrid plasma compared to LF plasma jet and control group. It is considered that reactive species produced in the LF-microwave hybrid plasma are related to the germination time of the radish sprout seed.

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Plant Growth Response to Atmospheric Air Plasma Treatments of Seeds of 5 Plant Species

Cited by 9 publications

References 16 publications

A Coaxial Dielectric Barrier Discharge Reactor for Treatment of Winter Wheat Seeds

A Coaxial Dielectric Barrier Discharge Reactor for Treatment of Winter Wheat Seeds

Effects of atmospheric pressure plasma jet operating with DBD on Lavatera thuringiaca L. seeds’ germination

Effect of LF-microwave hybrid plasma treatment on radish seed germination and sprout growth

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