Seed priming with <scp>KNO<sub>3</sub></scp> mediates biochemical processes to inhibit lead toxicity in maize (<i>Zea mays</i> L.)

Nawaz, Fahim; Naeem, Muhammad; Akram, Asim; Ashraf, Muhammad; Ahmad, Khawaja Shafique; Zulfiqar, Bilal; Sardar, Hasan; Shabbir, Rana Nauman; Majeed, Sadia; Shehzad, Muhammad; Anwar, Irfan

doi:10.1002/jsfa.8347

Cited by 31 publications

(10 citation statements)

References 62 publications

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“…On each sowing depth, results indicate significantly lower emergence in KNO3 primed seed compared to hydroprimed. This is in collision with findings of Nawaz et al (2017), who tested the effect of KNO3 and hydropriming on maize seed germination. In this study, no significant differences were observed in germination percentage and emergence index of hydroprimed and KNO3 primed maize seeds.…”

supporting

confidence: 65%

Effect of priming treatments on emergence and yield of freshly produced and aged maize seeds sown at different depths

Čanak¹,

Vujošević²,

Mirosavljević³

et al. 2020

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The aim of this study was to investigate whether different priming treatments could affect emergence, speed of emergence and yield of freshly produced and aged maize seeds sown at different depths. Two lots of parental maize line A634 produced in the previous season were used as seed source, and twenty-year-old seed. After priming with distilled water and 0.5% KNO3 solution, the seed was sown at four depths. Results showed that freshly produced seeds did not benefit from priming treatments. Reaction of the aged seeds differed depending on the priming treatment. Results indicated that priming with KNO3 should be avoided in aged seeds of A634 because of its detrimental effect on the emergence and yield. Hydropriming induced higher percentage of emerged plants and faster emergence, but with no effect on yield. Reaction to priming treatments varied with sowing depth, which should not exceed 5.0 cm for parental line A634 according to this study.

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supporting

confidence: 65%

Effect of priming treatments on emergence and yield of freshly produced and aged maize seeds sown at different depths

Čanak¹,

Vujošević²,

Mirosavljević³

et al. 2020

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“…Heavy metals are omnipresent pollutants of the environment, and their excessive level in arable soil can pose serious threats not only to normal plant growth and development but also to human health ( Nawaz et al, 2017 , 2022 ; Alamri et al, 2018 ; Deng et al, 2021 ). The release of toxic heavy metals in agricultural soil due to anthropogenic activities (mining, wastewater sludge, and pesticides) is the major cause of global heavy metal pollution ( Gill et al, 2013 ; Saleem et al, 2020a ; Irshad et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Impact of foliar application of syringic acid on tomato (Solanum lycopersicum L.) under heavy metal stress-insights into nutrient uptake, redox homeostasis, oxidative stress, and antioxidant defense

Saleem

Ali

et al. 2022

Front. Plant Sci.

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Soil contamination with toxic heavy metals [such as lead (Pb)] is becoming a serious global problem due to the rapid development of the social economy. However, accumulation of Pb in plant parts is very toxic for plant growth and decreases crop yield and productivity. In the present study, we have investigated the different concentrations of Pb in the soil i.e., [0 (no Pb), 50, and 100 mg kg–1] to study plant growth and biomass, photosynthetic pigments and gas exchange characteristics, oxidative stress indicators and the response of various antioxidants (enzymatic and non-enzymatic), nutritional status of the plant, organic acid exudation pattern and also Pb accumulation in the roots and shoots of the plants of two varieties of tomato (Solanum lycopersicum L.) i.e., Roma and Cchuas, grown under different levels of synergic acid [no spray (NS), water spray (WS), 0.3-0.5°μM]. Results from the present study showed that the increasing levels of Pb in the soil decreased non-significantly (P < 0.05) shoot length, root length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, chlorophyll-a, chlorophyll-b, total chlorophyll, carotenoid content, net photosynthesis, stomatal conductance, transpiration rate, soluble sugar, reducing sugar, non-reducing sugar contents, calcium (Ca2+), magnesium (Mg2+), iron (Fe2+), and phosphorus (P) contents in the roots and shoots of the plants. However, Pb toxicity also induced oxidative stress in the roots and shoots of the plants by increasing malondialdehyde (MDA), hydrogen peroxide (H2O2), and electrolyte leakage (EL) which also induced increased the compounds of various enzymatic and non-enzymatic antioxidants and also organic acids exudation pattern in the roots such as fumaric acid, acetic acid, citric acid, formic acid, malic acid, oxalic acid contents and increased the concentration of Pb in different parts of the plants. Results also show that the Cchuas showed better growth and development compared to Roma, under the same levels of Pb in the soil. The alleviation of Pb toxicity was induced by the application of synergic acid, and results showed that the application of synergic acid increased plant growth and biomass and also increased the gas exchange characteristics and antioxidant capacity in the roots and shoots of the plants. Research findings, therefore, suggested that synergic acid application can ameliorate Pb toxicity in S. lycopersicum varieties and result in improved plant growth and composition under metal stress as depicted by balanced exudation of organic acids.

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“…Previous studies in cotton and maize ( Guan et al, 2009 ; Singh et al, 2018 ) revealed that priming can significantly promote seed germination and seedling growth, and improve germination performance and seedling establishment under abiotic stress ( Ellouzi et al, 2021 ). Many seed initiation methods have been established, including hormone priming, osmopriming, hydropriming, stratification, humidification, hardening, and thermal shock ( Nawaz et al, 2017 ). Common initiators are polyethylene glycol (PEG), salicylic acid (SA), abscisic acid (ABA), and gibberellic acid (GA3) ( Jisha et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

“…Common initiators are polyethylene glycol (PEG), salicylic acid (SA), abscisic acid (ABA), and gibberellic acid (GA3) ( Jisha et al, 2013 ). Hormone priming is an efficient and cost-effective method, but is affected by several factors, such as plant species, seed viability, initiator concentration, and initiation method ( Nawaz et al, 2017 ). Therefore, it is crucial to determine the most effective seed priming agent and concentration to achieve the desired results.…”

Section: Introductionmentioning

confidence: 99%

Seed Priming With Melatonin Promotes Seed Germination and Seedling Growth of Triticale hexaploide L. Under PEG-6000 Induced Drought Stress

Guo

Liu

et al. 2022

Front. Plant Sci.

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Melatonin (N-acetyl-5-methoxytryptamine, MT) can mitigate abotic stress, including drought stress on a number of crops. However, it is unclear whether and how seed priming with melatonin alleviates the effects of drought stress on seed germination and seedling growth of triticale (Triticale hexaploide L.). In this study, we investigated the effects of seed priming with MT on seed germination, protective enzyme activity, superoxide anion, and hydrogen peroxide in triticale under PEG-6000 induced drought stress. Seed priming with 20 μM MT alleviated the adverse effects of PEG-6000 induced drought stress on seed germination and seedling growth. Triticale seeds primed with 20 μM MT exhibited improved germination potential, germination rate, germ and radicle length. Specifically, MT priming increased the germination rate by 57.67% compared with unprimed seeds. Seed priming with melatonin also alleviated the adverse effects of PEG-6000 induced drought stress on triticale seedlings. MT pretreatment with 20 μM significantly increased the net photosynthetic rate, transpiration rate, stomatal conductance, plant height, leaf area, and relative chlorophyll concentration, enhanced the activities of superoxide dismutase and peroxidase, and decreased reactive oxygen species (ROS) and malonaldehyde content in the seeds (germ and radicle) and seedlings (leaf and root). Collectively, these results suggest that seed priming with melatonin promotes ROS scavenging capacity and enhances energy supply and antioxidant enzyme activities to alleviate the adverse effects of drought stress in triticale.

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Seed priming with KNO₃ mediates biochemical processes to inhibit lead toxicity in maize (Zea mays L.)

Abstract: Maize accumulates more Pb in roots than shoot at early growth stages. Priming of seeds with KNO prevents Pb toxicity, which may be exploited to improve seedling establishment in crop species grown under Pb contaminated soils. © 2017 Society of Chemical Industry.

Cited by 31 publications

References 62 publications

Effect of priming treatments on emergence and yield of freshly produced and aged maize seeds sown at different depths

Effect of priming treatments on emergence and yield of freshly produced and aged maize seeds sown at different depths

Impact of foliar application of syringic acid on tomato (Solanum lycopersicum L.) under heavy metal stress-insights into nutrient uptake, redox homeostasis, oxidative stress, and antioxidant defense

Seed Priming With Melatonin Promotes Seed Germination and Seedling Growth of Triticale hexaploide L. Under PEG-6000 Induced Drought Stress

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Seed priming with KNO3 mediates biochemical processes to inhibit lead toxicity in maize (Zea mays L.)

Abstract: Maize accumulates more Pb in roots than shoot at early growth stages. Priming of seeds with KNO prevents Pb toxicity, which may be exploited to improve seedling establishment in crop species grown under Pb contaminated soils. © 2017 Society of Chemical Industry.

Cited by 31 publications

References 62 publications

Effect of priming treatments on emergence and yield of freshly produced and aged maize seeds sown at different depths

Effect of priming treatments on emergence and yield of freshly produced and aged maize seeds sown at different depths

Impact of foliar application of syringic acid on tomato (Solanum lycopersicum L.) under heavy metal stress-insights into nutrient uptake, redox homeostasis, oxidative stress, and antioxidant defense

Seed Priming With Melatonin Promotes Seed Germination and Seedling Growth of Triticale hexaploide L. Under PEG-6000 Induced Drought Stress

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Seed priming with KNO₃ mediates biochemical processes to inhibit lead toxicity in maize (Zea mays L.)