scholarly journals ZnO nanoparticle-based seed priming modulates early growth and enhances physio-biochemical and metabolic profiles of fragrant rice against cadmium toxicity

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Yuzhan Li ◽  
Luxin Liang ◽  
Wu Li ◽  
Umair Ashraf ◽  
Lin Ma ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Seed Germination ◽  
Seed Priming ◽  
Early Growth ◽  
Management Approach ◽  
Zno Nanoparticle ◽  
Cd Stress ◽  
Fresh Weight ◽  
Zno Nps ◽  
Fragrant Rice

Abstract Background Cadmium (Cd) is amongst the most toxic heavy metals that severely affects crop growth, whereas application of nanoparticles (NPs) to negate the toxic effects of heavy metals could be an effective management approach. In the present study, the seeds of two fragrant rice varieties i.e., Yuxiangyouzhan and Xiangyaxiangzhan under normal and Cd stress conditions i.e., 0 and 100 mg L− 1 applied with four levels of ZnO NPs i.e., 0, 25, 50, and 100 mg L− 1. Results Seed priming with ZnO NPs had no significant effect on the seed germination (p > 0.05) however, it substantially improved the seedling growth and other related physiological attributes under the Cd stress. The mean fresh weight of the shoot, and whole seedling was increased by 16.92–27.88% and by 16.92–27.88% after ZnO NPs application. The root fresh weight, root-shoot length was also substantially improved under ZnO NPs treatment. Moreover, application of ZnO NPs induced modulations in physiological and biochemical attributes e.g., the superoxide dismutase (SOD) activity in root and shoot, the peroxidase (POD) activity and metallothionein contents in root were increased under low levels of ZnO NPs. The α-amylase and total amylase activity were improved by ZnO NPs application under Cd Stress. Besides, modulation in Zn concentration and ZnO NPs uptake in the seedling were detected. The metabolomic analysis indicated that various pathways such as alanine, aspartate and glutamate metabolism, phenylpropanoid biosynthesis, and taurine and hypotaurine metabolism were possibly important for rice response to ZnO NPs and Cd. Conclusion Overall, application of ZnO NPs substantially improved the early growth and related physio-biochemical attributes in rice. Our findings provide new insights regarding the effects of ZnO NPs on seed germination, and early growth of rice, and its potential applications in developing crop resilience against Cd contaminated soils.

scholarly journals ZnO Nanoparticle-based Seed Priming Modulates Early Growth and Enhances Physio-biochemical and Metabolic Profiles of Fragrant Rice Against Cadmium Toxicity

2020 ◽  
Author(s):  
Yuzhan Li ◽  
Luxin Liang ◽  
Wu Li ◽  
Umair Ashraf ◽  
Lin Ma ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Seed Germination ◽  
Cadmium Toxicity ◽  
Seed Priming ◽  
Zno Nanoparticle ◽  
Cd Stress ◽  
Fresh Weight ◽  
Toxic Heavy Metals ◽  
Zno Nps ◽  
Fragrant Rice

Abstract Background: Cadmium (Cd) is among the most toxic heavy metals that severely affects crop growth, and in this purview numerous recent research initiatives have focused on the application of nanoparticles (NPs) to negate the toxic effects of heavy metals such as Cd. Method: In the present study, the seeds of two fragrant rice cultivars, namely Yuxiangyouzhan and Xiangyaxiangzhan, were grown after exposure to four ZnO NPs treatment (0, 25, 50, and 100 mg L-1), with or without the presence of Cd (100 mg L-1). Result: The results revealed that priming seeds with ZnO NPs had no significant effect on the seed germination (p > 0.05) however, it substantially improved the seedling growth and other related physiological attributes under the Cd stress. The mean fresh weight of the shoot, and whole seedling increased after ZnO NPs treatment by 16.92%-27.88% and 12.82-33.58%, respectively. The fresh weight of root, length of the shoot, and the root increased after ZnO NPs treatment. Moreover, remarkable changes in the physiological response of seedlings under ZnO NPs treatment were detected. The metabolomic analysis was performed to discern the underlying regulation of the metabolisms after ZnO NPs treatment for seedlings under Cd stress. Conclusion: Our findings provide new insight into the influence of ZnO NPs on seed germination, and the growth of crop plants, and may find potential applications in developing crop resilience in Cd laden agricultural lands.

scholarly journals The efficacy of different seed priming agents for promoting sorghum germination under salt stress

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245505
Author(s):  
Xiaofei Chen ◽  
Ruidong Zhang ◽  
Yifan Xing ◽  
Bing Jiang ◽  
Bang Li ◽  
...  
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Germination Rate ◽  
Principal Component ◽  
Dry Weight ◽  
Seed Priming ◽  
Nacl Stress ◽  
Future Research ◽  
Fresh Weight ◽  
Positive Effects

Sorghum [Sorghum bicolor (L.) Moench] seed germination is sensitive to salinity, and seed priming is an effective method for alleviating the negative effects of salt stress on seed germination. However, few studies have compared the effects of different priming agents on sorghum germination under salt stress. In this study, we quantified the effects of priming with distilled water (HP), sodium chloride (NaCl), potassium chloride (KCl), calcium chloride (CaCl2), and polyethylene glycol (PEG) on sorghum seed germination under 150 mM NaCl stress. The germination potential, germination rate, germination index, vigor index, root length, shoot length, root fresh weight, shoot fresh weight, root dry weight, and shoot dry weight were significantly reduced by salt stress. Different priming treatments alleviated the germination inhibition caused by salt stress to varying degrees, and 50 mM CaCl2 was the most effective treatment. In addition, the mitigation effect of priming was stronger on root traits than on shoot traits. Mitigation efficacy was closely related to both the type of agent and the concentration of the solution. Principal component analysis showed that all concentrations of CaCl2 had higher scores and were clearly distinguished from other treatments based on their positive effects on all germination traits. The effects of the other agents varied with concentration. The priming treatments were divided into three categories based on their priming efficacy, and the 50, 100, and 150 mM CaCl2 treatments were placed in the first category. The 150 mM KCl, 10% PEG, HP, 150 mM NaCl, 30% PEG, and 50 mM KCl treatments were placed in the second category, and the 100 mM NaCl, 100 mM KCl, 20% PEG, and 50 mM NaCl treatments were least effective and were placed in the third category. Choosing appropriate priming agents and methods for future research and applications can ensure that crop seeds germinate healthily under saline conditions.

scholarly journals Effects of salinity and external proline on seed germination and early growth of Cucumis sativus cv. super ps

2018 ◽  
Vol 10 (4) ◽  
pp. 215-220
Author(s):  
FARIBA AMINI ◽  
MEHRY ASKARY ◽  
FAHIMEH MOHTASHAMI ◽  
FAHIMEH MOHTASHAMI
Keyword(s):  
Seed Germination ◽  
Cucumis Sativus ◽  
Root Length ◽  
Significant Variation ◽  
Defense Mechanisms ◽  
Germination Rate ◽  
Dry Weight ◽  
Early Growth ◽  
Soluble Carbohydrate ◽  
Fresh Weight

Amini F, Askary M, Mohtashami F. 2018. Effects of salinity and external proline on seed germination and early growth of Cucumis sativus cv. super ps. Nusantara Bioscience 10: 215-220. Salinity is one of the important abiotic stresses that has an adverse effect on plant productions. High salt concentrations had negative effects on plant processes such as seed germination, seedling growth and turgescent, vegetative growth, flowering and fruiting stages. Proline as a compatible solution plays an important role in defense mechanisms of cellular stress. This study was done to evaluate effects of proline pretreatment (0 and 20 mM) in terms of salinity (0, 50, 100 and 150 mM) on cucumber cv. super ps. The obtained results proved that salinity treatments had significant effects on seed germination rate. On the contrary, application of proline had no significant effect on germination percentages of control and salt-stressed seeds. The root fresh weight and length of plant reduced with salinity increment while proline treatment had positive significant effects on the root dry as well as the fresh weight. Although, no significant variation was found in the root length and dry weight of cultivars treated with proline under salinity stresses. Meanwhile, the shoot length and dry weight of plants declined after salt-stressed treatments. While this condition increased the fresh weight of shoot. Proline treatments increased all of observed parameters but there were no significant variation found in the root length or dry weight of plants treated under saline stresses. The total soluble carbohydrate of plants had positive significant correlation with salt concentration, but the application of proline declined carbohydrate amounts in both salt-stressed and non-stressed plant. Salinity stress increased sodium, proline, protein contents and CAT enzyme, GPOX as well as MDA concentrations, while in the proline-treated plants salinity stresses had no significant effect on CAT, GPOX, MDA concentrations and internal proline amount.

Effect of Co2+ and Ni2+ on Seed Germination and Seedling Growth of Oilseed Rape

2013 ◽  
Vol 807-809 ◽  
pp. 976-979
Author(s):  
Qing Song Yang ◽  
Yan Zhao
Keyword(s):  
Heavy Metals ◽  
Seed Germination ◽  
Oilseed Rape ◽  
Seedling Growth ◽  
Metal Toxicity ◽  
Growth Stage ◽  
Early Growth ◽  
Early Growth Stage ◽  
Germination And Growth ◽  
Factor Governing

Metal toxicity is an important factor governing germination and growth of plants. We have investigated how Co2+and Ni2+treatment affected germination and early growth stage of oilseed rape (Brassica napusL.). The results showed that the single pollution of Co2+was capable to stimulate the seed germination and seedling growth of oilseed rape at lower concentration, but the phenomena did not exist by the single pollution of Ni2+. Not only polluted by Co2+ but also by Ni2+, all indexes of germination and growth reduced gradually at higher concentration among examined concentration of heavy metals. Meanwhile, effects of Ni2+single pollution were stronger than that of Co2+single pollution.

scholarly journals Effect of Seed Priming with Proline on Germination and Seedling Growth of Mungbean under Salt Stress

2019 ◽  
pp. 15-18
Author(s):  
Muhammad Abdus Sobahan
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming ◽  
Germination Percentage ◽  
Fresh Weight ◽  
Seed Vigour ◽  
Control Seed ◽  
Vigour Index ◽  
Radicle Length

Seed priming is a pre-sowing treatment that enhances germination performance and stress tolerance of germinating seeds. The effect of seed priming with proline on germination and seedling growth of mungbean (Vigna radiata L.) under salt stress was investigated. The experiment carried out in completely randomized design with three replications in May 2018 at the Research Laboratory of the School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh. Salt stress at 5 dSm-1 decreased seed germination percentage, plumule length, radicle length, plumule fresh weight, radicle fresh weight and seed vigour index compared to control. Seed priming with proline increased germination percentage (53.84%), plumule length, radicle length, plumule fresh weight, radicle fresh weight and seed vigour index under salt stress. The results suggested that seed priming with proline could effectively alleviate the inhibitory effects of salt stress on seed germination and seedling growth of mungbean. South Asian J. Agric., 7(1&2): 15-18

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