Seed priming improves seedling emergence and reduces oxidative stress in <i>Nigella sativa</i> under soil moisture stress

Fallah, Sina; Malekzadeh, Somayeh; Pessarakli, Mohammad

doi:10.1080/01904167.2017.1381719

Cited by 26 publications

(15 citation statements)

References 22 publications

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“…Research has shown that loss of dry weight by seedlings under drought stress is due to decreased hydrolyzed reserves and is not linked to the output of seed deposits [ 60 , 64 ]. The key function of GA is to stimulate genes encoding for enzymes involved in seed germination, particularly alpha-amylase, by upregulating mRNA expression [ 65 ]. From the perspective of the improvement of all indexes, GA priming had the best effect on improving seed germination and seedling growth (Tables 1 and 2 ) [ 65 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of seed priming treatments on the germination and development of two rapeseed (Brassica napus L.) varieties under the co-influence of low temperature and drought

Zhu

Sami

et al. 2021

PLoS ONE

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The present study was performed to evaluate the effects of seed priming. This was done by soaking the seeds of two rapeseed cultivars, namely, ZY15 (tolerant to low temperature and drought) and HY49 (sensitive to low temperature and drought), for 12 h in varying solutions: distilled water, 138 mg/L salicylic acid (SA), 300 mg/L gibberellic acid (GA), 89.4 mg/L sodium nitroprusside (SNP), 3000 mg/L calcium chloride (CaCl2), and 30 mg/L abscisic acid (ABA). Primed and non-primed seeds were left to germinate at 15°C and -0.15 MPa (T15W15) and at 25°C and 0 MPa (T25W0), respectively. The results showed that SA, GA, SNP, CaCl2, and ABA significantly improved the germination potential (GP), germination rate (GR), germination index (GI), stem fresh weight (SFW), stem dry weight (SDW), root length (RL), stem length (SL), and seed vigor index (SVI) under T15W15. For ZY15 seeds under T25W0, GA, SNP, CaCl2, and ABA priming reduced the average germination time (96% after 5 days) compared to that of the control (88% after 5 days). For ZY15 seeds under T15W15, SA, SNP, CaCl2, and ABA priming, with respect to the control and water-treated groups, shortened the average germination time (92% after 5 days) compared to that of the control (80% after 5 days). For HY49 seeds under T25W0, GA, SNP, CaCl2, and ABA priming reduced the average germination time (92% after 5 days) compared to that of the control (85% after 5 days). Similarly, for HY49 seeds under T15W15, GA priming shortened the average germination time (89% after 5 days) compared to that of the control (83% after 5 days). These priming agents increased the net photosynthesis, stomatal conductivity, and transpiration rate of rape seedlings under conditions of low temperature and drought stress, while also decreasing intercellular carbon dioxide (CO2) concentrations. Additionally, SA, GA, SNP, CaCl2, and ABA increased superoxide dismutase concentrations (SOD) and ascorbic peroxidase (APX) activities of rape seedlings under stress conditions, while decreasing catalase (CAT) and peroxidase (POD) activities in ZY15 seedlings. In HY49, which is sensitive to low temperature and drought, all priming solutions, except for SNP, led to an increase in SOD activity levels and a decrease in CAT activity levels. Overall, SA, GA, SNP, and CaCl2 increased the concentrations of indoleacetic acid (IAA), GA, ABA, and cytokinin (CTK) in seedlings under stress conditions. Moreover, compared to SA, CaCl2, and ABA, GA (300 mg/L) and SNP (300 mol/L) showed improved priming effects for ZY15 and HY49 under stress conditions.

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Section: Discussionmentioning

confidence: 99%

Effects of seed priming treatments on the germination and development of two rapeseed (Brassica napus L.) varieties under the co-influence of low temperature and drought

Zhu

Sami

et al. 2021

PLoS ONE

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“…Priming both invigorated the seeds and increased the expression and activity of CAT. Alternatively, or perhaps additionally, the priming-induced reductions in lipid oxidation products and increases in MSI may have been because priming more generally reduced ROS formation [46]. In the present study, cathodic water may have directly reacted with ROS.…”

Section: Effects On Membrane Leakage and Lipid Peroxidation Productsmentioning

confidence: 61%

Cathodic Water Enhances Seedling Emergence and Growth of Controlled Deteriorated Orthodox Seeds

Fatokun

Beckett

Varghese

et al. 2021

Plants

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All orthodox seeds eventually deteriorate during storage, a well-known problem in seed banking. Here we used a greenhouse study to test if priming deteriorated seeds with cathodic water can improve the emergence and subsequent seedling growth of three South African tree species, Bolusanthus speciosus, Combretum erythrophyllum and Erythrina caffra. Other priming solutions investigated were calcium magnesium (CaMg) solution and deionized water. In the present study, seeds were subjected to an artificial deterioration by increasing their water content to 14% and keeping them at 40 °C and 100% RH until they had lost 50% of their germination under laboratory conditions. Fresh and deteriorated seeds were primed with cathodic water, CaMg solution and deionized water, with non-primed fresh and deteriorated seeds as controls. Controlled deterioration significantly reduced total emergence and the biomass and photosynthetic parameters of the resulting seedlings. In one species (Bolusanthus speciosus), priming the deteriorated seeds with cathodic water significantly improved emergence parameters. However, in all species cathodic water significantly improved the total biomasses and other growth parameters of the seedlings derived from deteriorated seeds. Priming with CaMg solution and deionized water had little effect on emergence and while improving the growth of seedlings derived from deteriorated seeds, they were less effective than cathodic water. In fresh seeds, priming with all solutions resulted in small improvements in some parameters. Controlled deterioration of fresh seeds reduced the membrane stability index (MSI) in two of the three species and in all species increased the levels of the lipid oxidation products MDA and 4-HNE. Priming deteriorated seeds with cathodic water increased the MSI and reduced the MDA contents in all species and the 4-HNE content in one species. Other priming solutions were generally less effective in ameliorating oxidative stress. Results suggest that the strong antioxidative properties of cathodic water can explain its ability to ameliorate deterioration. In conclusion, the present study shows that priming with cathodic water is an effective way of invigorating deteriorated orthodox seeds and that it may have considerable potential in orthodox seed conservation.

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“…Previously, Yilmaz et al ( 1998 ) reported that the wheat seedlings emerged from high-Zn seeds in Zn-deficient soils under rainfed conditions were better in vigor, led to denser plant population, and resulted in higher grain yield. Very recently, it was reported that drought stress tolerance of young seedlings of durum wheat and Nigella sativa was improved by using seeds which were enriched with Zn either by foliar Zn fertilization of field-grown maternal plants (Candan et al, 2018 ) or through seed priming with Zn (Fallah et al, 2018 ), respectively. Priming of seeds with Zn was also found to be protective against salt stress during early seedling development (Imran et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…Positive effects of Zn on the overall antioxidant capacity of plants are well-known (Cakmak, 2000 ). For example, increasing antioxidative potential of Zn-enriched seeds through the elevated activity of superoxide dismutase and catalase has been shown in wheat and Nigella sativa seedlings (Candan et al, 2018 ; Fallah et al, 2018 ). The positive effects of Zn priming of wheat and rice seed (in 0.5 mM ZnSO 4 for 12 h) as well as seed Zn coating (with up to 1.5 g Zn kg –1 seed) were also reported on crop stand establishment and grain yield under field conditions (Ali et al, 2018 ; Farooq et al, 2018 ; Rehman et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of zinc‐biofortified seeds on grain yield of wheat, rice, and common bean grown in six countries

Rashid

Ram

Zou

et al. 2019

J. Plant Nutr. Soil Sci.

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Seeds enriched with zinc (Zn) are ususally associated with better germination, more vigorous seedlings and higher yields. However, agronomic benefits of high‐Zn seeds were not studied under diverse agro‐climatic field conditions. This study investigated effects of low‐Zn and high‐Zn seeds (biofortified by foliar Zn fertilization of maternal plants under field conditions) of wheat (Tritcum aestivum L.), rice (Oryza sativa L.), and common bean (Phaseolus vulgaris L.) on seedling density, grain yield and grain Zn concentration in 31 field locations over two years in six countries. Experimental treatments were: (1) low‐Zn seeds and no soil Zn fertilization (control treatment), (2) low‐Zn seeds + soil Zn fertilization, and (3) Zn‐biofortified seeds and no soil Zn fertilization. The wheat experiments were established in China, India, Pakistan, and Zambia, the rice experiments in China, India and Thailand, and the common bean experiment in Brazil. When compared to the control treatment, soil Zn fertilization increased wheat grain yield in all six locations in India, two locations in Pakistan and one location in China. Zinc‐biofortified seeds also increased wheat grain yield in all four locations in Pakistan and four locations in India compared to the control treatment. Across all countries over 2 years, Zn‐biofortified wheat seeds increased plant population by 26.8% and grain yield by 5.37%. In rice, soil Zn fertilization increased paddy yield in all four locations in India and one location in Thailand. Across all countries, paddy yield increase was 8.2% by soil Zn fertilization and 5.3% by Zn‐biofortified seeds when compared to the control treatment. In common bean, soil Zn application as well as Zn‐biofortified seed increased grain yield in one location in Brazil. Effects of soil Zn fertilization and high‐Zn seed on grain Zn density were generally low. This study, at 31 field locations in six countries over two years, revealed that the seeds biofortfied with Zn enhanced crop productivity at many locations with different soil and environmental conditions. As high‐Zn grains are a by‐product of Zn biofortification, use of Zn‐enriched grains as seed in the next cropping season can contribute to enhance crop productivity in a cost‐effective manner.

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Seed priming improves seedling emergence and reduces oxidative stress in Nigella sativa under soil moisture stress

Cited by 26 publications

References 22 publications

Effects of seed priming treatments on the germination and development of two rapeseed (Brassica napus L.) varieties under the co-influence of low temperature and drought

Effects of seed priming treatments on the germination and development of two rapeseed (Brassica napus L.) varieties under the co-influence of low temperature and drought

Cathodic Water Enhances Seedling Emergence and Growth of Controlled Deteriorated Orthodox Seeds

Effect of zinc‐biofortified seeds on grain yield of wheat, rice, and common bean grown in six countries

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