Alleviation of adverse effects of drought stress on wheat seed germination using atmospheric dielectric barrier discharge plasma treatment

Qiao, Guo; Wang, Ying; Zhang, Haoran; Qu, Guangzhou; Wang, Tiecheng; Sun, Qiuhong; Liang, Dong

doi:10.1038/s41598-017-16944-8

Cited by 111 publications

(108 citation statements)

References 56 publications

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“…In addition, exposure of wheat seeds to the LPDBD plasma treatments (Ar/O 2 and Ar/Air) showed some stimulating effects with respect to the germination rate and seedlings vigor. Previously, DBD (dielectric barrier discharge) plasma treatment reported being useful for enhancing seed germination rate, and vigor index in wheat plants 25 , 26 . In our study, the LPDBD Ar/Air plasma proved to be better than Ar/O 2 to increase germination rate and thus, suggest that Ar/Air plasma could be more efficient while inducing seed germination is primarily desirable.…”

Section: Discussionmentioning

confidence: 99%

Mechanisms and Signaling Associated with LPDBD Plasma Mediated Growth Improvement in Wheat

Rahman

Sajib

Rahi

et al. 2018

Sci Rep

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This study investigates the effect and mechanisms of low pressure dielectric barrier discharge (LPDBD) produced with Ar/O2 and Ar/Air technique causing biological stimulation leading to improved germination and growth in wheat. Both plasma treatments caused rougher and chapped seed surface along with noticeable improvement in seed germination in wheat. Beside this, seed H2O2 concentration significantly increased compared to controls subjected to Ar/O2 and Ar/Air while this phenomenon was more pronounced due to Ar/Air plasma. Analysis of plants grown from the plasma treated seeds showed significant improvement in shoot characteristics, iron concentration, total soluble protein and sugar concentration in comparison with the controls more efficiently due to Ar/O2 plasma than that of Ar/Air. Further, none of the plasma treatments caused membrane damage or cell death in root and shoot of wheat. Interestingly, Ar/O2 treated plants showed a significant increase (2-fold) of H2O2 compared to controls in both root and shoot, while Ar/Air plasma caused no changes in H2O2. This phenomenon was supported by the biochemical and molecular evidence of SOD, APX and CAT in wheat plants. Plants derived from Ar/O2 treated seeds demonstrated a significant increase in SOD activity and TaSOD expression in roots of wheat, while APX and CAT activities along with TaCAT and TaAPX expression showed no significant changes. In contrast, Ar/Air plasma caused a significant increase only in APX activity in the shoot. This suggests that Ar/O2 plasma caused a slight induction in H2O2 accumulation without triggering the H2O2 scavengers (APX and CAT) and thus, efficiency affect growth and development in wheat plants. Further, grafting of control and Ar/O2 treated plants showed a significant increase in shoot biomass and H2O2 concentration in grafts having Ar/O2 rootstock regardless of the type scion attached to it. It indicates that signal driving Ar/O2 plasma mediated growth improvement in wheat is possibly originated in roots. Taken together, this paper delivers new insight into the mechanistic basis for growth improvement by LPDBD technique.

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Section: Discussionmentioning

confidence: 99%

Mechanisms and Signaling Associated with LPDBD Plasma Mediated Growth Improvement in Wheat

Rahman

Sajib

Rahi

et al. 2018

Sci Rep

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“…RF discharge, when generated with a power intensity of 80 to 100 W for a short exposure time of 0.25 min, rapidly increased the POD activity of tomato seedlings and the CAT and SOD activities of oil rapeseed seedlings when compared with the untreated control under environmentally controlled conditions ( Jiang et al, 2014b ; Li et al, 2015 ). Similarly, growing plants of wheat, maize, and soybeans had higher activities in the antioxidant enzymes POD, CAT, or SOD after DBD exposure to their seeds ( Henselová et al, 2012 ; Guo et al, 2017 ; Iranbakhsh et al, 2017 ; Li et al, 2017 ; Zhang et al, 2017 ). In particular, DBD in air enhanced the POD and SOD activities of wheat seedlings after its exposure of up to 4 min with a power intensity of 1.5 W ( Guo et al, 2017 ; Li et al, 2017 ).…”

Section: The Three Factors Affecting Seed Invigoration and Seedling Ementioning

confidence: 97%

“…Similarly, growing plants of wheat, maize, and soybeans had higher activities in the antioxidant enzymes POD, CAT, or SOD after DBD exposure to their seeds ( Henselová et al, 2012 ; Guo et al, 2017 ; Iranbakhsh et al, 2017 ; Li et al, 2017 ; Zhang et al, 2017 ). In particular, DBD in air enhanced the POD and SOD activities of wheat seedlings after its exposure of up to 4 min with a power intensity of 1.5 W ( Guo et al, 2017 ; Li et al, 2017 ). Wheat seedlings that were directly exposed to DBD for 1 min had a higher POD activity compared with the untreated control ( Iranbakhsh et al, 2018 ).…”

Section: The Three Factors Affecting Seed Invigoration and Seedling Ementioning

confidence: 97%

“…There is little or no information for establishing crop stress management practices using plasma technology. To our knowledge, there are only a few studies under laboratory conditions on crop tolerance to disease (Jiang et al, 2014b;Ochi et al, 2017), drought (Li et al, 2015;Guo et al, 2017;Feng et al, 2018), salinity (Iranbakhsh et al, 2018), and oxidative stress (Bußler et al, 2015;Iranbakhsh et al, 2017) using plasma technology. Therefore, further studies are needed to optimize the effectiveness of plasma treatment on crop tolerance to a broad range of stressors.…”

Section: Limitations and Future Considerationsmentioning

confidence: 99%

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Emerging Plasma Technology That Alleviates Crop Stress During the Early Growth Stages of Plants: A Review

et al. 2020

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Crops during their early growth stages are vulnerable to a wide range of environmental stressors; thus, earlier seed invigoration and seedling establishment are essential in crop production. As an alternative to synthetic chemical treatments, plasma technology could be one of the emerging technologies to enhance seed germination and seedling vigor by managing environmental stressors. Recent studies have shown its beneficial effects in various stress conditions, suggesting that plasma treatment can be used for early crop stress management. This paper reviewed the effects of different types of plasma treatments on plant responses in terms of the seed surface environment (seed scarification and pathogen inactivation) and physiological processes (an enhanced antioxidant system and activated defense response) during the early growth stages of plants. As a result, plasma treatment can enhance seed invigoration and seedling establishment by alleviating the adverse effects of environmental stressors such as drought, salinity, and pathogen infection. More information on plasma applications and their mechanisms against a broad range of stressors is required to establish a better plasma technology for early crop stress management.

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“…Cold plasma is a recently well-advanced seed enhancement without the process of imbibition. Its combination with priming is also worth study for it smoothens seed surface 58 , adjusts osmotic solutes and changes the subsequent process of water absorbation 59 , induces antioxidant response, and also disinfects seeds 59,60 .…”

Section: Discussionmentioning

confidence: 99%

Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage

Xia

Yin

et al. 2020

Sci Rep

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complement to storage. One popular form of seed enhancement is priming which contains a hydrate-dehydrate process before sowing to invigorate seeds and promote germination 13 , hence its name "priming" which means promotion at the start. Seed deterioration as a result of ageing is attributed to the imbalance in the reductive /oxidative (redox) state caused by the accumulation of reactive oxygen species (ROS) which accelerate viability loss 8,14-16. Antioxidant priming has been shown to be effective in removing ROS 17 , boosting antioxidant enzymes 17 , and, through inhibition of lipid oxidation, increasing cell membrane integrity (CMI) as measured by electrical conductivity (EC) 18. The antioxidant effect is achieved by holding the seed in a hydrated state before radicle protrusion 19. This state is to make full use of antioxidant enzymes and antioxidants to scavenge ROS 6 and to apply exogenous antioxidants during priming 20. During storage the seed is dehydrated and antioxidant enzymes are inactive 21. Antioxidant priming is therefore beneficial to the activation of antioxidant system. However, its exact role in subsequent storage, indicated by post-priming seed survival, is much more ambiguous 6. One probable reason is that it promotes radicleprotrusion during which a seed loses its desiccation tolerance 22 and therefore suffers cell membrane injury during desiccation 21. In practice there is hardly any standard for priming as a method to prolong seed longevity 20. Could antioxidant priming act as a regular method of boosting seed longevity, and if so, when should a seed lot be primed? Priming has been found to be more likely to benefit seeds at the vulnerable stage 6. Our question was whether would antioxidant priming prolong or abbreviate the resistant stage? Would it decelerate viability loss? To better understand the exact role of antioxidant priming, antioxidant 15 and oxidant priming were applied to rice seeds to study post-priming survival. Rice is the model species for cereals and ranks third in the world's crop production, following maize and wheat. It is also the staple food in tropical or subtropical areas where temperatures are high. Without cold storage, environments for seed preservation are inclement and seed enhancement can be more useful. The original germination percentage (GP) of rice (Nipponbare, NPB) seeds in this study was already 97%, hard to improve. So, priming could only benefit seeds through prolonging the resistant stage or decelerating viability loss rather than increasing GP. Two hypotheses were proposed: (1) ageing resistance significantly declines as a result of storage before GP decreases; (2) antioxidant priming increases ageing resistance at high GP and decelerates viability loss. This study sought to discover an optimal time point for seed priming against viability loss, which can be generalized to other species and circumstances of storage and perhaps extended to be incorporated with other types of seed enhancement. Results Seed longevity under AAA responded negatively to t...

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Alleviation of adverse effects of drought stress on wheat seed germination using atmospheric dielectric barrier discharge plasma treatment

Cited by 111 publications

References 56 publications

Mechanisms and Signaling Associated with LPDBD Plasma Mediated Growth Improvement in Wheat

Mechanisms and Signaling Associated with LPDBD Plasma Mediated Growth Improvement in Wheat

Emerging Plasma Technology That Alleviates Crop Stress During the Early Growth Stages of Plants: A Review

Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage

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