Effect of exogenous proline application on maize yield and the optimum rate of mineral nitrogen under salinity stress

Mosaad, I. S. M.; Serag, Ayman; Moustafa-Farag, Mohamed; Seadh, Ali

doi:10.1080/01904167.2019.1676901

Cited by 14 publications

(7 citation statements)

References 41 publications

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“…The soil study experiment is classi ed as moderately saline soil (ECe 8-16 dS/m) based on the USDA classes 20 . The experimental farm was irrigated from the El-Serw drainage, which was irrigated from a point approximately 20 km from the beginning of the drainage (EC 1.2:1.4 dS m-1, SAR 10.5:11.3), so the irrigation water classi cation is considered to be water that increases salinity problems 13,21 . Some hydro physical properties of the soil at the experimental site are presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…The Nop and Neop were calculated according to Thind et al 27 and Mosaad et al 13 using the following equations:…”

Section: Agronomic Charactersmentioning

confidence: 99%

“…Nitrogen (N) is one of the critical nutrients for crop production and is generally applied in large quantities to soils 11 . The use of mineral nitrogen fertilization results in improved growth, higher biomass, and yield, and facilitates the metabolism to give a higher amount of protein in maize plant tissue 12,13 . Nitrogen directly in uences the amino acid composition of protein and thereby the nutritional quality of the economic production.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Water Irrigation Amounts and Nitrogen Fertilizer Levels on Teosinte Productivity and Optimal Economic N-Rates Under Salinity Stress

Aboelgoud

Mosaad

Awad

2021

Preprint

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The teosinte plant is one of the most important fodder crops that is affected by drought and nitrogen supply, and therefore the optimal supply of N- fertilization may be affected by the amount of irrigation water added to teosinte plants to obtain an economic crop. Two field experiments were done to study the effect of irrigation amount at three levels (100%, 80% and 120%) and nitrogen fertilizer levels (60, 90 and 120 kg N fed-1) (Feddan = 4200 m2) on the yield productivity of teosinte and determined the optimal and economic optimal N rate as affected by irrigation amount levels, and water relations. The results showed that the highest values of the fresh and dry weight of cuts, as well as plant height and stem diameter, were obtained when applying the full irrigation rate with full irrigation and 120 kg N fed-1. The results also showed that a 20% decrease in the irrigation rate led to a deterioration in the values of those parameters. Although the results showed that the full irrigation amount more saved water at two seasons under various levels of nitrogen. Moreover, all water relationships gave the best mean values for actual evapotranspiration, water utilization and use efficiencies also, higher application efficiency values at full irrigation and 120 kg N-levels than the other treatments. Also, the results showed that the economical yield of teosinte fresh cuts when using 211.01 kg N fed-1 with 120% of the recommended irrigation rate was higher when using 148.22 kg N fed-1 with the recommended irrigation rate. Therefore, we recommend using 211.01 kg N fed-1 to get an optimum economic yield of teosinte fresh cuts, especially in saline soil, with 120% of the recommended irrigation rate.

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Section: Methodsmentioning

confidence: 99%

“…The Nop and Neop were calculated according to Thind et al 27 and Mosaad et al 13 using the following equations:…”

Section: Agronomic Charactersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Water Irrigation Amounts and Nitrogen Fertilizer Levels on Teosinte Productivity and Optimal Economic N-Rates Under Salinity Stress

Aboelgoud

Mosaad

Awad

2021

Preprint

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“…Salinity speeds up leaf senescence and reduces cell expansion and crop yield. The exogenous application of melatonin increases relative water content, antioxidant enzyme activity, and improves photosynthetic efficiency to enhance the tolerance against salinity stress [ 40 , 41 ].…”

Section: Melatoninmentioning

confidence: 99%

Using Exogenous Melatonin, Glutathione, Proline, and Glycine Betaine Treatments to Combat Abiotic Stresses in Crops

Khalid

Rehman

Ahmed

et al. 2022

IJMS

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Abiotic stresses, such as drought, salinity, heat, cold, and heavy metals, are associated with global climate change and hamper plant growth and development, affecting crop yields and quality. However, the negative effects of abiotic stresses can be mitigated through exogenous treatments using small biomolecules. For example, the foliar application of melatonin provides the following: it protects the photosynthetic apparatus; it increases the antioxidant defenses, osmoprotectant, and soluble sugar levels; it prevents tissue damage and reduces electrolyte leakage; it improves reactive oxygen species (ROS) scavenging; and it increases biomass, maintains the redox and ion homeostasis, and improves gaseous exchange. Glutathione spray upregulates the glyoxalase system, reduces methylglyoxal (MG) toxicity and oxidative stress, decreases hydrogen peroxide and malondialdehyde accumulation, improves the defense mechanisms, tissue repairs, and nitrogen fixation, and upregulates the phytochelatins. The exogenous application of proline enhances growth and other physiological characteristics, upregulates osmoprotection, protects the integrity of the plasma lemma, reduces lipid peroxidation, increases photosynthetic pigments, phenolic acids, flavonoids, and amino acids, and enhances stress tolerance, carbon fixation, and leaf nitrogen content. The foliar application of glycine betaine improves growth, upregulates osmoprotection and osmoregulation, increases relative water content, net photosynthetic rate, and catalase activity, decreases photorespiration, ion leakage, and lipid peroxidation, protects the oxygen-evolving complex, and prevents chlorosis. Chemical priming has various important advantages over transgenic technology as it is typically more affordable for farmers and safe for plants, people, and animals, while being considered environmentally acceptable. Chemical priming helps to improve the quality and quantity of the yield. This review summarizes and discusses how exogenous melatonin, glutathione, proline, and glycine betaine can help crops combat abiotic stresses.

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“…The negative impacts of salinity reported for the different stages of plant growth include a reduction in photosynthetic activity, changes in carbohydrate and protein metabolism, while the accumulation of organic acids and osmolytes is the means of plant response to salinity stress [15,16]. The first biochemical sign of salinity is the generation of ROS [17][18][19], their harmful effects such as protein degradation, DNA mutation, and lipid peroxidation [20,21], which result in oxidative damage and the down-regulation of CO 2 fixation, leading to physiological dysfunctions and programmed cell death [22][23][24]. Salinity reduces the germination percentage [25], cell expansion and plant growth and speeds up leaf senescence, adding to losses in yield [26].…”

Section: Plant Responses and Tolerance To Salinity Stressmentioning

confidence: 99%

Role of Melatonin in Plant Tolerance to Soil Stressors: Salinity, pH and Heavy Metals

et al. 2020

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Melatonin (MT) is a pleiotropic molecule with diverse and numerous actions both in plants and animals. In plants, MT acts as an excellent promotor of tolerance against abiotic stress situations such as drought, cold, heat, salinity, and chemical pollutants. In all these situations, MT has a stimulating effect on plants, fomenting many changes in biochemical processes and stress-related gene expression. Melatonin plays vital roles as an antioxidant and can work as a free radical scavenger to protect plants from oxidative stress by stabilization cell redox status; however, MT can alleviate the toxic oxygen and nitrogen species. Beyond this, MT stimulates the antioxidant enzymes and augments antioxidants, as well as activates the ascorbate–glutathione (AsA–GSH) cycle to scavenge excess reactive oxygen species (ROS). In this review, we examine the recent data on the capacity of MT to alleviate the effects of common abiotic soil stressors, such as salinity, alkalinity, acidity, and the presence of heavy metals, reinforcing the general metabolism of plants and counteracting harmful agents. An exhaustive analysis of the latest advances in this regard is presented, and possible future applications of MT are discussed.

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Effect of exogenous proline application on maize yield and the optimum rate of mineral nitrogen under salinity stress

Cited by 14 publications

References 41 publications

Effect of Water Irrigation Amounts and Nitrogen Fertilizer Levels on Teosinte Productivity and Optimal Economic N-Rates Under Salinity Stress

Effect of Water Irrigation Amounts and Nitrogen Fertilizer Levels on Teosinte Productivity and Optimal Economic N-Rates Under Salinity Stress

Using Exogenous Melatonin, Glutathione, Proline, and Glycine Betaine Treatments to Combat Abiotic Stresses in Crops

Role of Melatonin in Plant Tolerance to Soil Stressors: Salinity, pH and Heavy Metals

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