Seed Priming with Methyl Jasmonate Mitigates Copper and Cadmium Toxicity by Modifying Biochemical Attributes and Antioxidants in Cajanus cajan

The principal intent of the investigation was to examine the influence of joint application of methyl jasmonate (MeJA, 10 μM) and a nitric oxide–donor sodium nitroprusside (SNP, 100 μM) to wheat plants grown under cadmium (Cd as CdCl2, 100 μM) stress. Cd stress suppressed plant growth, chlorophylls (Chl), and PSII maximum efficiency (Fv/Fm), but it elevated leaf and root Cd, and contents of leaf proline, phytochelatins, malondialdehyde, and hydrogen peroxide, as well as the activity of lipoxygenase. MeJA and SNP applied jointly or singly improved the concentrations of key antioxidant biomolecules, e.g., reduced glutathione and ascorbic acid and the activities of the key oxidative defense system enzymes such as catalase, superoxide dismutase, dehydroascorbate reductase, glutathione S-transferase, and glutathione reductase. Exogenously applied MeJA and SNP jointly or singly also improved nitrogen metabolism by activating the activities of glutamine synthetase, glutamate synthase, and nitrate and nitrite reductases. Compared with individual application of MeJA or SNP, the combined application of both showed better effect in terms of improving plant growth and key metabolic processes and reducing tissue Cd content, suggesting a putative interactive role of both compounds in alleviating Cd toxicity in wheat plants.Main findingsThe main findings are that exogenous application of methyl jasmonate and nitric oxide–donor sodium nitroprusside alleviated the cadmium (Cd)–induced adverse effects on growth of wheat plants grown under Cd by modulating key physiological processes and up-regulating enzymatic antioxidants and the ascorbic acid–glutathione cycle–related enzymes.

Download Full-text

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

10.21203/rs.3.rs-113495/v1 ◽

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.

Download Full-text

Improvement of broccoli sprouts ( Brassica oleracea L. var. italica) growth and quality by KCl seed priming and methyl jasmonate under salinity stress

Scientia Horticulturae ◽

10.1016/j.scienta.2017.08.030 ◽

2017 ◽

Vol 226 ◽

pp. 141-151 ◽

Cited By ~ 14

Author(s):

Ismahen Hassini ◽

Maria Carmen Martinez-Ballesta ◽

Neziha Boughanmi ◽

Diego A. Moreno ◽

Micaela Carvajal

Keyword(s):

Methyl Jasmonate ◽

Brassica Oleracea ◽

Salinity Stress ◽

Seed Priming ◽

Broccoli Sprouts ◽

Brassica Oleracea L

Download Full-text

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Egyptian Journal of Agronomy ◽

10.21608/agro.2020.23667.1204 ◽

2020 ◽

Vol 0 (0) ◽

pp. 0-0

Author(s):

Omid Sadeghipour

Keyword(s):

Vigna Unguiculata ◽

Glycine Betaine ◽

Cadmium Toxicity ◽

Seed Priming

Download Full-text

Effect of salicylic acid seed priming on resistance to high levels of cadmium in lettuce (Lactuca sativa L.)

Genetics & Applications ◽

10.31383/ga.vol2iss2pp67-72 ◽

2018 ◽

Vol 2 (2) ◽

pp. 67

Author(s):

Melisa Šabanović ◽

Adisa Parić ◽

Mirela Briga ◽

Erna Karalija

Keyword(s):

Salicylic Acid ◽

Germination Rate ◽

Cadmium Toxicity ◽

Dry Weight ◽

Seed Priming ◽

The Other ◽

Cadmium Tolerance ◽

Cd Toxicity ◽

Tolerance Level ◽

Lactuca Sativa L

Cadmium (Cd) is abundant heavy metal with highly toxic effect on plants. The aim of presented study was to investigate the effect of seed priming using salicylic acid on cadmium tolerance in lettuce. The tolerance level was evaluated using germination speed and percentage, fresh and dry seedling weight, water and photosynthetic pigments content. Control seeds were primed using distilled water. In control plants cadmium induced reduction of germination rate, fresh and dry weight, water and chlorophyll content. Seed priming using salicylic acid, on the other hand, induced increased resistance of lettuce to cadmium toxicity. Increase in germination rate, fresh mass and water content were recorded for plants subjected to 5 mM Cd, grown from seeds primed using salicylic acid. Results obtained by this study suggested that salicylic acid can be used as priming agent in order to alleviate Cd toxicity on lettuce.

Download Full-text