DSpace Arşivi :: by Yazar "El Sabagh, Ayman" değerine göre listeleniyor

Yazar "El Sabagh, Ayman" seçeneğine göre listele

Listeleniyor 1 - 20 / 22

Alterations in Growth and Yield of Camelina Induced by Different Planting Densities under Water Deficit Stress
(Tech Science Press, 2020) Waraich, Ejaz Ahmad; Ahmed, Zeeshan; Ahmad, Zahoor; Ahmad, Rashid; Erman, Murat; Cig, Fatih; El Sabagh, Ayman
Camelina (Camelina sativa L.) is famous for its oil quality and unique fatty acid pattern. Growth and yield of crops reduced under water deficit conditions. Environmental threat such as drought or water deficit condition is the emerging problem which creates the negative impact on the growth of plants. Based upon the current situation a pot study was performed in rain out-shelter to explore the effect of different plant densities (15, 10 and 5 plants per pot) on growth and seed yield of two camelina genotypes under normal (100% WHC) and water deficit (60% WHC) conditions by using completely randomized design with factorial arrangement having three replicates. Results indicated that individual effects of plant densities and water deficit stress levels considerably influenced the growth and seed yield of camelina but interaction effects did not indicate any significant variation. Maximum values of leaf area index (LAI) and crop growth rate (CGR) were recorded in P-3 treatment (15 plants per pot). However, maximum values of leaf area duration (LAD), net assimilation rate (NAR), yield and yield components were observed in the treatment P-1 (5 plants per pot). Water deficit condition (60% WHC) significantly minimized the growth, seed yield (0.82 g/m(2)) and yield components of camelina genotypes. Both camelina genotypes (611 and 618) did not differ significantly under water deficit conditions.
Applications of genome editing in plant virus disease management: CRISPR/Cas9 plays a central role
(Taylor & Francis Inc, 2023) Wani, Farhana; Rashid, Shahjahan; Wani, Sumiah; Bhat, Sahar Saleem; Bhat, Sanober; Tufekci, Ebru Derelli; El Sabagh, Ayman
Plant viruses infect a wide variety of economically important crop plants and cause significant loss in agricultural production around the world. Conventional control strategies are insufficient to combat rapidly evolving plant viruses. In recent years, genome editing technologies have paved new ways for manipulating viral genomes (DNA or RNA). Among them, the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) and CRISPR-associated protein 9 (Cas9) system has been seen to be able to engineer plant virus resistance by directly targeting the viral genome as well as by inactivating host susceptibility genes. In this review, we survey genome editing tools targeting viral genomes, with an emphasis on CRISPR/Cas9. The advantages of the CRISPR/Cas9 system for combating plant viruses as well as its limitations are discussed in detail.
Chipset Nanosensor Based on N-Doped Carbon Nanobuds for Selective Screening of Epinephrine in Human Samples
(Wiley, 2022) Emran, Mohammed Y.; El-Safty, Sherif A.; Elmarakbi, Ahmed; Reda, Abduallah; El Sabagh, Ayman; Shenashen, Mohamed A.
Chipset nanosensor design and fabrication are important for healthcare research and development. Herein, a functionalized chipset nanosensor is designed to monitor neurotransmitters (i.e., epinephrine (EP)) in human fluids. An interdigitated electrode array (IDA) is functionalized by N-doped carbon nanobud (N-CNB) and N-doped carbon nanostructure (N-CNS). The surface morphology of N-CNB shows the formation of nanotubular-like branches on sheets and micrometer-size tubes. The N-CNS design consists of the formation of aggregated sheets and particles in nanometer size. The irregular shape formation provides surface heterogeneity and numerous free spaces between the stacked nanostructures. N-atoms ascertain highly active N-CNS with multifunctional active centers, electron-rich charged surface, and short distance pathway. The N-CNB/IDA exhibits the best performance for EP signaling with high sensitivity and selectivity. The N-CNB/IDA sensing performance for EP detection indicates the successful design of a highly selective and sensitive assay with low detection limit of 0.011 x 10(-6) m and a broad linear range of 0.5 x 10(-6) to 3 x 10(-6) m. The N-CNB/IDA exhibits a high degree of accuracy and reproducibility with RSD of 2.7% and 3.9%, respectively. Therefore, the chipset nanosensor of N-CNB/IDA can be used for on-site monitoring of EP in human serum samples and further used in daily monitoring of neuronal disorders.
Consequences of Salinity Stress on the Quality of Crops and Its Mitigation Strategies for Sustainable Crop Production: An Outlook of Arid and Semi-arid Regions
(Springer International Publishing, 2020) El Sabagh, Ayman; Hossain, Akbar; Barutçular, Celaleddin; Iqbal, Muhammad Aamir; Islam, M. Sohidul; Fahad, Shah; Sytar, Oksana
One of the key tasks of the Sustainable Development Goals connected to Agriculture, Safety and nutritional quality of food is to raise crop production per unit area without compromising the sustainability of agricultural resources and environmental security. Along with environmental constraints, soil salinization has become one of the major threats that restricts agricultural potential and is closely related to mishandling of agricultural resources and overexploitation of water resources, particularly in arid regions. The effect of salinity on the quality of various agricultural crops has not yet been much explored. Presently, this information is very important due to the increasing use of saline water for irrigation worldwide which has given rise to as soil salinity has become a critical around the world and the situation has been worsening over the last 20 years in arid and semi-arid regions particularly in Mediterranean area. Salinity stress significantly affect the nutritional properties and quality traits of crops due to physiological and biochemical alterations in plants at different growth stage. During salinity stress, plants tend to activate different physiological and biochemical mechanisms to cope with the stress through altering their morphology, anatomy, water relations, photosynthesis, protein synthesis, primary and secondary metabolism and biochemical adaptations such as the antioxidative metabolism response. Therefore, it is important for breeders and producers to understand the influence of salinity on the composition of crops, for improvement of protein and oil quality (amino and fatty acid) under the salinity conditions. The aims of present review is to quantify the adverse effects of salinity on quality parameters of crops and management approaches for ameliorating the adverse effects of salinity stress to enhance the yield and grain quality of crops. © Springer Nature Switzerland AG 2020.
Diallel Analysis and Selection of Hybrids for Nutritional Phytochemicals in Capsicum Annuum L.
(Hard, 2024) Chakrabarty, Swapan; Ahamed, Tofayel; Ditta, Allah; Pandey, Saurabh; Cig, Arzu; Soufan, Walid; El Sabagh, Ayman
Chili (Capsicum annuum L.) is an important functional food due to its main bioactive compound, capsaicin, and other nutritional phytochemicals. However, very few studies have been conducted to develop hybrids with a high content of nutritional phytochemicals. The present study involving six parents was conducted to identify superior hybrids with higher nutritional quality based on combining ability and heterosis following Griffing's diallel Method II Model I. A broad spectrum of genetic variation among the six parents and fifteen F1 hybrids was confirmed by analysis of variance. (H1/D)0.5 value indicated that partial dominance gene action controlled all the traits except capsaicin and total phenolic content. Based on general combining ability (GCA) results, parent P3 (PLP-2s) was the best general combiner for all the traits except K and Na, followed by the parents P6 (BU Capsicum 1), P5 (Morich-8), P4 (Chili Japan) and P1 (Red Chili). Specific combining ability (SCA), along with heterotic response, revealed that the F1 hybrid P3xP6 (PLP-2s x BU Capsicum 1) was the best hybrid, followed by the hybrids P4xP6 (Chili Japan x BU Capsicum 1) and P3xP4 (PLP-2s x Chili Japan), as they exhibited superiority for major nutritional components, such as capsaicin and ascorbic acid. Ultimately, the subsequent selection of the F1 hybrids
Editorial: Global Food and Nutrition Security Under Changing Climates
(Frontiers Media Sa, 2022) Ahmad, Waqar; Ullah, Najeeb; Xu, Ling; El Sabagh, Ayman
[Abstract Not Available]
Effect of Biochar and PGPR on the Growth and Nutrients Content of Einkorn Wheat (Triticum monococcum L.) and Post-Harvest Soil Properties
(Mdpi, 2021) Cig, Fatih; Soenmez, Ferit; Nadeem, Muhammad Azhar; El Sabagh, Ayman
Limited availability of nutrients to crops is a major agricultural concern. Deteriorated soil health and poor fertility status decrease the bioavailability of essential nutrients to the plants. Consequently, organic soil amendment biochar is gaining attention due to its potential benefits. Rhizobacterial inoculation, are also documented as an effective technology for mobilization of immobile nutrients in soil. However, limited literature is available on combined use of rhizobacteria and biochar. Therefore, this study was carried out to examine the changes in the nutrient content of einkorn wheat and the change in some soil properties during the application of plant growth-promoting rhizobacteria (PGPR) with biochar. Four doses of biochar (0, 2.5, 5, and 10%) were applied with and without PGPR in the study. Biochar increased the growth criteria such as plant fresh weight (PFW), plant dry weight (PDW), root fresh weight (RFW), root dry weight (RDW), number of tillers, germination rate (GR) and potassium (K), calcium (Ca), sodium (Na), iron (Fe), copper (Cu), zinc (Zn), manganese (Mn), and nickel (Ni) elements. While PGPR application increased soil pH, dry and fresh weight of root, R/S, K, Ca, Mg, Fe, and Ni contents, and it caused a decrease in PH, PFW, tillers, GR, P, Cu, and Zn values. Combined biochar applications and PGPR had a significant effect on the pH, RFW, R/S, P, Na, and Cu. In conclusion, the combination of biochar and PGPR applications has shown a positive effect in terms of soil properties, plant growth, and element contents of einkorn wheat.
Enhancing Canola Yield and Photosynthesis under Water Stress with Hydrogel Polymers
(Tech Science Press, 2024) Badr, Elham A.; Bakhoum, Gehan Sh.; Sadak, Mervat Sh.; Al-Ashkar, Ibrahim; Islam, Mohammad Sohidul; El Sabagh, Ayman; Abdelhamid, Magdi T.
While Egypt's ' s canola production per unit area has recently grown, productivity remains low, necessitating increased productivity. Hydrogels are water -absorbent polymer compounds that can optimize irrigation schedules by increasing the soil's ' s ability to retain water. Accordingly, two fi eld experiments were conducted to examine hydrogel application to sandy soil on canola growth, biochemical aspects, yield, yield traits, and nutritional quality of yielded seeds grown under water deficit fi cit stress conditions. The experiments were conducted by arranging a split -plot layout in a randomized complete block design (RCBD) with three times replications of each treatment. While water stress at 75% or 50% of crop evapotranspiration (ETc) lowered chlorophyll a, chlorophyll b, carotenoids, and total pigments content, indole-3-acetic acid, plant development, seed yield, and oil and total carbohydrates of seed yield, hydrogel treatment enhanced all of the traits mentioned above. Furthermore, hydrogel enhanced to gather compatible solutes (proline, amino acids, total soluble sugars), phenolics content in leaves, seed protein, and crop water productivity, which increased while the plants were under water stress. The results revealed that the full irrigation (100%ETc) along with hydrogel compared to water -stressed (50%ETc) led to enhanced seed yield (kg ha -1 ), Oil (%), and Total carbohydrates (%) of rapeseed by 57.1%, 11.1% and 15.7%, respectively. Likewise, under water -stressed plots with hydrogel exhibited enhancement by 10.0%, 3.2% and 5.1% in seed yield (kg ha -1 ), oil (%), and total carbohydrates (%) of rapeseed by 57.1%, 11.1% and 15.7%, respectively compared to control. As a result, the use of hydrogel polymer will be a viable and practical solution for increasing agricultural output under water deficit fi cit stress situations.
Enzymeless copper microspheres@carbon sensor design for sensitive and selective acetylcholine screening in human serum
(Elsevier, 2022) Emran, Mohammed Y.; Shenashen, Mohamed A.; El Sabagh, Ayman; Selim, Mahmoud M.; El-Safty, Sherif A.
Follow up of neuronal disorders, such as Alzheimer's and Parkinson's diseases using simple, sensitive, and selective assays is urgently needed in clinical and research investigation. Here, we designed a sensitive and selective enzymeless electrochemical acetylcholine sensor that can be used in human fluid samples. The designed electrode consisted of a micro spherical construction of Cu-metal decorated by a thin layer of carbon (CuMS@C). A simple and one-pot synthesis approach was used for Cu-metal controller formation with a spherical like structures. The spherical like structure was formed with rough outer surface texture, circular build up, homogeneous formation, micrometric spheres size (0.5 -1 mu m), and internal hollow structure. The formation of a thin layer of carbon materials on the surface of CuMS sustained the catalytic activity of Cu atoms and enriched negatively charge of the surface. CuMS@C acted as a highly active mediator surface that consisted of Cu metal as a highly active catalyst and carbons as protecting, charge transport, and attractive surface. Therefore, the CuMS@C surface morphology and composition played a key role in various aspects such as facilitated ACh diffusion/loading, increased the interface surface area, and enhanced the catalytic activity. The CuMS@C acted as an electroactive catalyst for ACh electrooxidation and current production, due to the losing of two electrons. The fabricated CuMS@C could be a highly sensitive and selective enzymeless sensor for detecting ACh with a detection limit of 0.1 mu M and a wide linear range of 0.01 - 0.8 mM. The designed ACh sensor assay based on CuMS@C exhibited fast sensing property as well as sensitivity, selectivity, stability, and reusability for detecting ACh in human serum samples. This work presents the design of a highly active electrode surface for direct detection of ACh and further clinical investigation of ACh levels.
EVALUATING SHORT STATURE AND HIGH YIELDING MAIZE HYBRIDS IN MULTIPLE ENVIRONMENTS USING GGE BIPLOT AND AMMI MODELS
(Soc Field Crop Sci, 2020) Ahmed, Asgar; Hossain, Akbar; Amiruzzaman, Md; Alam, Md Ashraful; Farooq, Muhammad; El Sabagh, Ayman; Kizilgeci, Ferhat
In Bangladesh, maize stands second place after rice; since it faces diverse natural calamities during its highest growing season (rabi/winter), particularly strong storm during the reproductive stage. Sometimes in some regions, this crop is completely damaged by natural disasters. Considering the burning issue, thirteen hybrids, including 10 previously selected short stature hybrids were evaluated against three local and standard checks: 'BHM-9', '981' and 'Sunshine' in two consecutive years in seven locations of Bangladesh. Combined analysis over locations and seasons instigated that genotypes 'Sunshine', '981' and 'G10' were the top-high yielders, while genotypes 'G1', 'G2', 'BHM-9' and 'Sunshine' were found the most stable. On the other hand, five genotypes such as 'G3', 'G4', 'G6', 'G8' and 'G9' had the below-average mean yield and the genotypes 'G6' and 'G9' were the most unstable. Among the seven environments, Jamalpur, Joydebpur and Dinajpur were most discriminating and Ishwardi was the least discriminating; whereas Joydebpur was more representative and Borishal was the least representative of other test environments. In the case of plant and ear height, most of the genotypes showed a lower value than all the checks, which was desirable. But among the top three high yielders, local cross-genotype, the 'G10' had the lowest and more stable value for both plant height and ear height. Therefore, considering the plant and ear height, grain yield, and yield stability, the genotype 'G10' has been recommended for release as commercial variety and has been released as new maize variety in Bangladesh with the local name of 'BARI Hybrid Maize-16' (BHM-16).
Exploring the therapeutic potential of the oxygenated monoterpene linalool in alleviating saline stress effects on Allium cepa L.
(Springer, 2024) de Lima Silva, Jailson Renato; dos Santos, Larisse Bernardino; Hassan, Waseem; Kamdem, Jean Paul; Duarte, Antonia Eliene; Soufan, Walid; El Sabagh, Ayman
Sodium chloride (NaCl) can cause oxidative stress in plants, which represents a potential obstacle to the development of monocultures worldwide. Onion (Allium cepa L.) is a famous vegetable consumed and used in world cuisine. In the present study, we analyzed the influence of soil physicochemical profile and the remedial capacity of linalool on seed emergence, roots, and leaf growth in onions subjected to salt stress, as well as its in vivo and in vitro antioxidant potential, Fe2+chelating activity, and reducing power of Fe3+. The outcome of the soil analysis established the following order of abundance: sulfur (S) > calcium (Ca) > potassium (K) > magnesium (Mg) > sodium (Na). NaCl (150 mM) significantly reduced the emergence speed index (ESI), leaf and root length, while increasing the peroxidation content. The length of leaves and roots significantly increased after treatment with linalool (300 and 500 ?g/mL). Our data showed negative correlations between seed emergence and K+ concentration, which was reversed after treatments. Linalool (500 ?g/mL) significantly reduced oxidative stress, but increased Fe2+ concentration and did not show potential to reduce Fe3+. The in vivo antioxidant effect of linalool is thought to primarily result from an enzymatic activation process. This mechanism underscores its potential as a therapeutic agent for oxidative stress–related conditions. Further investigation into this process could unveil new avenues for antioxidant therapy. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.
Genotypic Divergences of Important Mungbean Varieties in Response to Salt Stress at Germination and Early Seedling Stage
(Hard, 2024) Shaddam, Md. Obaidullah; Islam, M. R.; Ditta, Allah; Ismaan, Hassan Nuur; Iqbal, Muhammad Aamir; Al-Ashkar, Ibrahim; El Sabagh, Ayman
Salinity drastically hampers the germination and growth of legumes including mungbean which jeopardizes the food and nutritional security of the rising human population. An experiment entailing varying salinity levels (0, 50, and 150 Mm NaCl) was conducted to investigate the response of salinity on germination and seedling growth of four mungbean genotypes (BARI Mung-7, BARI Mung-8, BU Mug-2, and BU Mug-4). The germination indices such as percentage and rate of germination along with the coefficient of velocity (GP) of all mungbean genotypes were significantly reduced by the salt stress, especially of Binamoog-5 at 150 mM NaCl. Contrarily, BARI Mung-8 remained superior by recording better germination indices under all salinity levels. The same cultivar outperformed the rest of the cultivars based on the greatest weights (fresh and dry) and length of roots and shoots, while BU Mug-2 could not perform at par under a saline environment. Thus, it might be inferred that mungbean genotypes differ in their potential for salt endurance due to the germination vigor and seedling growth robustness and screening of salt-tolerant cultivars could mitigate the detrimental effects of saline
GROWTH, HERBAGE YIELD AND QUALITY EVALUATION OF TURFGRASSES SPECIES UNDER AGRO-ECOLOGICAL CONDITIONS OF IĞDIR, TURKEY
(Pakistan Botanical Soc, 2024) Hosafioglu, Ibrahim; Akdeniz, Hakki; Turan, Nizamettin; Seydosoglu, Seyithan; Iqbal, Muhammad Aamir; El Sabagh, Ayman
The agro-botanical and qualitative testing of indigenous turfgrass species have remained neglected despite their enormous potential to provide nutritional herbage for dairy animals. A multi-year research was conducted to appraise the growth, herbage yield and nutritional quality performance of eight turfgrass species (Lolium perenne, Festuca arundinacea, Poa pratensis, Festuca rubra rubra, Festuca rubra comutata, Festuca rubra trichophylla, Festuca ovina, Agrostis tenuis) during 2015 and 2016 under the agro-ecological conditions of Igdir, Turkey. The experiment was carried out in a factorial design with three replications, while response variables included different agro-botanical traits and green herbage potential of turfgrasses under investigation. The results revealed that Festuca arundinacea remained superior for canopy covering rate, green herbage yield, plant height, root depth, leaf width, grass quality and greenness of leaf color.It was followed by Lolium perenne and Festuca rubra rubra. However, Festuca ovina and Agrostis tenuis performed below par to other turfgrass species during all seasons of both years. Therefore, turfgrass species 'Festuca arundinacea', Lolium perenne and Festuca rubra rubra may be recommended for obtaining significantly higher green herbage yield and quality in all three seasons (spring, summer and autumn) in Igdir, Turkey and in other regions of having similar agro-climatic conditions globally.
Modern Biotechnologies: Innovative and Sustainable Approaches for the Improvement of Sugarcane Tolerance to Environmental Stresses
(Mdpi, 2021) Shabbir, Rubab; Javed, Talha; Afzal, Irfan; El Sabagh, Ayman; Ali, Ahmad; Vicente, Oscar; Chen, Pinghua
Sugarcane (Saccharum spp.) is one of the most important industrial cash crops, contributing to the world sugar industry and biofuel production. It has been cultivated and improved from prehistoric times through natural selection and conventional breeding and, more recently, using the modern tools of genetic engineering and biotechnology. However, the heterogenicity, complex poly-aneuploid genome and susceptibility of sugarcane to different biotic and abiotic stresses represent impediments that require us to pay greater attention to the improvement of the sugarcane crop. Compared to traditional breeding, recent advances in breeding technologies (molecular marker-assisted breeding, sugarcane transformation, genome-editing and multiple omics technologies) can potentially improve sugarcane, especially against environmental stressors. This article will focus on efficient modern breeding technologies, which provide crucial clues for the engineering of sugarcane cultivars resistant to environmental stresses.
NANO-SILVER AND NON-TRADITIONAL COMPOUNDS MITIGATE THE ADVERSE EFFECTS OF NET BLOTCH DISEASE OF BARLEY IN CORRELATION WITH UP-REGULATION OF ANTIOXIDANT ENZYMES
(Pakistan Botanical Soc, 2020) Abdelaal, Khaled A. A.; El-Shawy, El-Sayed Abd-Allah; Hafez, Yaser Mohamed; Abdel-Dayem, Sherif Mohamed Ali; Chidya, Russel Chrispine Garven; Saneoka, Hirofumi; El Sabagh, Ayman
Exogenous application of nano-silver, non-traditional compounds and fungicides were used to alleviate the harmful effect of net blotch disease in the highly susceptible Egyptian barley 'Giza 2000'caused by Pyrenophora teres L. The symptoms of net blotch disease were significantly dwindled as a result of foliar spray with fungicides such as Montero, Belize and Cabri Top. Application of Tilt, Vitavax, Nano-silver, Allicin and Benzothiadiazole (BTH) fungicides moderately controlled the effects of disease severity. While, fungicides Premis, Eugenol and Oxalic acid treatments did not reduce significantly the severity of net blotch disease. As a result of these treatments, the activities of antioxidant enzymes activity were increased significantly as compared with the untreated control plants. The tested treatments were effective, since the electrolyte leakage percentage of treated plants decreased significantly, while the yield attributes were increased significantly as compared with control. The maximum1000-grain weight (g), grain yield (kg ha(-1)) and biological yield (kg ha(-1)) were achieved with the application of fungicide 'Montero' followed by 'Belize'. Therefore, the novel findings of the present study may be supportive to farmers and plant breeders with non-traditional compounds and basic mechanisms to create new resistant barley cultivars, consequently, decreasing fungicides use and environmental pollution.
Overviewing of weed management practices to reduce weed seed bank and to increase maize yield
(Univ Federal Vicosa, 2020) Maqsood, Qaiser; Abbas, Rana N.; Iqbal, Muhammad A.; Serap, Kizil A.; Iqbal, Asif; El Sabagh, Ayman
Background: Weeds are unwanted and undesirable plants which deteriorate the quality of agricultural products and interfere with farming activities. Most of the weeds (indigenous and invasive) seeds get preserved in soil horizons as weed seed bank which ensure their survival leading to the spoilage of quantitative and qualitative functioning of agricultural farms. Objective: To keep weeds below threshold level, elimination of weeds seed before germination can be a viable and pro-ecological approach. To achieve this objective, weed seeds reserved in the soil which serve as an effective pool to ensure their survival necessitate weed-seed bank management. Thus the ultimate goal was to synthesize and analyze research findings on weed seed bank management leading to formulating the most effective strategy encompassing viable control of weeds in maize. Methods: This study reviewed and analyzed the characteristics which impart botanical superiority to weeds and impact of all prevalent weed control strategies on weed seed bank, weeds density and maize yield. The research findings pertaining to different agronomic practices and technological packages were critically analyzed to sort out the most effective and eco-friendly approach to control weed-seed bank and weeds density in maize crop. Results: The synthesis and critical evaluation of research findings pertaining to weed control methods revealed that manual and mechanical methods were eco-friendly but involved expensive labor, while the chemical approach involving the use of herbicides led to serious deterioration of agro-environmental resources. Two or more techniques used in coherence which encompassed deep tillage to burry weeds seed and prevented their germination through mulches of biotic and synthetic materials along with optimizing sowing method especially raised bed technique reduced weed seed bank and weeds density in maize. Conclusions: It is inferred that integrated approach entailing cultural, manual, mechanical and chemical control can be developed as a pro environmental and farmer friendly approach for weed control by reducing weed seed reserves which can potentially lead to higher economic returns through higher maize yield.
Progress in sensory devices of pesticides, pathogens, coronavirus, and chemical additives and hazards in food assessment: Food safety concerns
(Pergamon-Elsevier Science Ltd, 2022) Shenashen, Mohamed A.; Emran, Mohammed Y.; El Sabagh, Ayman; Selim, Mahmoud M.; Elmarakbi, Ahmed; El-Safty, Sherif A.
Food intake gives vitality and supplements to support humans and other living organisms. Food safety and contamination problems associated with food hygiene, storage, chemical additives, enzymes, bacteria, and pesticides are crucial issues because of their direct influence on the health of humans and even animals. New monitoring technologies should be developed for potential food safety and significant environmental benefits. To date, the ultrasensing, early detection, and real- and on-time monitoring of vital reactive species, biomolecules, chemicals, and hazardous agents are important in ensuring food quality. With significant advances in the engineering of sensory devices, the progressive development of accurate quantity screening, early explicit monitoring and assessment, and real-time detection analysis can support the standard food quality through the full control of an extraordinary food safety test. Progress in numerous autoexamining appraisals, sensing protocols, and tools of (i) reactive species and chemical additives associated with human metabolism and various nutritional and industrial processes of foods, including ascorbic acid (AA), H2O2, uric acid (UA), and nitrite and sulfite anions; (ii) extremely organic and inorganic hazards such as heavy metals and bisphenol A; and (iii) food adulteration, pesticides, pathogenic microorganisms are a key challenge for food safety concerns. To date, evidence supporting the possibility of transmitting coronavirus disease 2019 (COVID-19) infection through food products is unavailable. However, in a report on an outbreak in mid-June 2020 in China, food contamination with the causative agent of COVID-19 pandemic, SARS-CoV-2, was discovered. Thus, sensory protocol devices for monitoring the SARS-CoV-2 antigen associated with food products is urgently needed for the future perspective progress in health. As such, we provide details in advanced sensor development in the monitoring, analysis, and evaluation sectors for food safety applications. We also report on next-generation nano/microscale wearable sensor devices that can wirelessly provide relevant healthy and safety food information data. This review gives evidence that the powerful engineering of mobile food sensor devices is an ongoing acquisition, offering considerable future avenues to the perspective in-home healthcare of aging individuals.
Regulation of Na+/H+ exchangers, Na+/K+ transporters, and lignin biosynthesis genes, along with lignin accumulation, sodium extrusion, and antioxidant defense, confers salt tolerance in alfalfa
(Frontiers Media Sa, 2022) Rahman, Md Atikur; Woo, Jae Hoon; Lee, Sang-Hoon; Park, Hyung Soo; Kabir, Ahmad Humayan; Raza, Ali; El Sabagh, Ayman
Accumulation of high sodium (Na+) leads to disruption of metabolic processes and decline in plant growth and productivity. Therefore, this study was undertaken to clarify how Na+/H+ exchangers and Na+/K+ transporter genes contribute to Na+ homeostasis and the substantial involvement of lignin biosynthesis genes in salt tolerance in alfalfa (Medicago sativa L.), which is poorly understood. In this study, high Na+ exhibited a substantial reduction of morphophysiological indices and induced oxidative stress indicators in Xingjiang Daye (XJD; sensitive genotype), while Zhongmu (ZM; tolerant genotype) remained unaffected. The higher accumulation of Na+ and the lower accumulation of K+ and K+/(Na+ + K+) ratio were found in roots and shoots of XJD compared with ZM under salt stress. The ZM genotype showed a high expression of SOS1 (salt overly sensitive 1), NHX1 (sodium/hydrogen exchanger 1), and HKT1 (high-affinity potassium transporter 1), which were involved in K+ accumulation and excess Na+ extrusion from the cells compared with XJD. The lignin accumulation was higher in the salt-adapted ZM genotype than the sensitive XJD genotype. Consequently, several lignin biosynthesis-related genes including 4CL2, CCoAOMT, COMT, CCR, C4H, PAL1, and PRX1 exhibited higher mRNA expression in salt-tolerant ZM compared with XJD. Moreover, antioxidant enzyme (catalase, superoxide dismutase, ascorbate peroxidase, and glutathione reductase) activity was higher in ZM relative to XJD. This result suggests that high antioxidant provided the defense against oxidative damages in ZM, whereas low enzyme activity with high Na+ triggered the oxidative damage in XJD. These findings together illustrate the ion exchanger, antiporter, and lignin biosysthetic genes involving mechanistic insights into differential salt tolerance in alfalfa.
Silicon supplementation enhances productivity, water use efficiency and salinity tolerance in maize
(Frontiers Media Sa, 2022) Alayafi, Abdullah H.; Al-Solaimani, Samir G. M.; Abd El-Wahed, Mohamed H.; Alghabari, Fahad M.; El Sabagh, Ayman
Drought and salinity stress severely inhibits the growth and productivity of crop plants by limiting their physiological processes. Silicon (Si) supplementation is considerd as one of the promising approaches to alleviate abiotic stresses such as drought and salinity. In the present study, a field experiment was conducted over two successive growth seasons (2019-20) to investigate the effect of foliar application of Si at two concentrations (1 and 2 kg Si ha(-1)) on the growth, yield and physiological parameters of three maize cultivars (ES81, ES83, and ES90) under three levels of irrigation salinity) [1000 (WS1), 2000 (WS2) and 3000 (WS3) mg L-1NaCl]. In this study, A trickle irrigation system was used. Si application significantly mitigated the harsh effects of salinity on growth and yield components of maize, which increased at all concentrations of Si. In irrigation with S3 salinity treatment, grain yield was decreased by 32.53%, however, this reduction was alleviated (36.19%) with the exogenous foliar application of Si at 2 kg Si ha(-1). At salinity levels, Si application significantly increased maize grain yield (t ha(-1)) to its maximum level under WS of 1000 mg L-1, and its minimum level (Add value) under WS of 3000 mg L-1. Accordingly, the highest grain yield increased under Si application of 2 kg Si ha(-1), regardless of salinity level and the cultivar ES81 achieved the highest level of tolerance against water salinity treatments. In conclusion, Application of Si at 2 kg Si ha(-1) as foliar treatment worked best as a supplement for alleviating the adverse impacts of irrigation water salinity on the growth, physiological and yield parameters of maize.
Sub-Surface Drip Irrigation in Associated with H2O2 Improved the Productivity of Maize under Clay-Rich Soil of Adana, Turkey
(Tech Science Press, 2020) Sariyev, Alhan; Barutcular, Celaleddin; Acar, Mert; Hossain, Akbar; El Sabagh, Ayman
Maize being sub-tropical crop is sensitive to water deficit during the early growth stages; particularly clay-rich soil, due to the compaction of the soil. It is well-documented that potential sub-surface drip irrigation (SDI) (Full irrigation; SDIFull (100% field capacity (FC)), Deficit irrigation; SDIDeficit (70% FC)) improves water use efficiency, which leads to increased crop productivity; since it has a constraint that SDI excludes soil air around the root-zone during irrigation events, which alter the root function and crop performance. Additionally, in clayrich soils, the root system of plants generally suffers the limitation of oxygen, particularly the temporal hypoxia, and occasionally from root anoxia; while SDI system accomplishes with the aerating stream of irrigation in the rhizosphere could provide oxygen root environment. The oxygen can be introduced into the irrigation stream of SDI through two ways: the venturi principle, or by using solutions of hydrogen peroxide through the air injection system. Therefore, the application of hydrogen peroxide (H2O2; HP) can mitigate the adverse effect of soil compactness and also lead to improving the growth, yield and yield attributes of maize in clay-rich soil. Considering the burning issue, a field study was conducted in consecutive two seasons of 2017 and 2018; where hybrid maize was cultivated as a second crop, to evaluate the effect of liquid-injection of H2O2(HP) into the irrigation stream of SDI on the performance of maize in a clay-rich soil field of Adana, Turkey. When soil water content decreased in 50% of available water, irrigation was performed. The amount of water applied to reach the soil water content to the field capacity is SDIFull (100% FC) and 70% FC of this water is SDIDeficit (70% FC). In the irrigation program, hydrogen peroxide (HP) was applied at intervals of 7 days on average according to available water with and without HP: SDIFull (100% FC) + 0 ppm HP with full SDI irrigation; SDIFull (100% FC) + 250 ppm HP with deficit SDI irrigation; SDIDeficit (70% FC) + 0 ppm HP, SDIDeficit (70% FC) + 250 ppm HP and SDIDeficit (70% FC) + 500 ppm HP. Deficit irrigation (SDIDeficit (70% FC)) program was started from tasseling stage and continued up to the physiological maturity stage with sub-soil drip irrigation. H2O2 was applied 3 times during the growing season. Two years' results revealed that the liquid-injection of H2O2 into the irrigation stream of SDI improved the growth and yield-related attributes and grain yield of maize. Based on the obtained results, during the extreme climatic condition in the year 2017, SDIFull (100% FC) + 250 ppm HP was more effective than SDIFull (100% FC) + 0 ppm HP on all traits for relative to full irrigation. While, during the favourable climatic condition in the 2018 season, SDIFull (100% FC) + 250 ppm HP was more effective than full irrigation with SDIFull (100% FC) + 0 ppm HP for the grain yield, grains, and SPAD value. Accordingly, the most effective treatment was SDIFull (100% FC) + 250 ppm HP, as it gave the highest growth and yield-related attributes and grain yield of maize followed by SDIDeficit (70% FC) + 250 ppm HP. Therefore, SDIFull with 250 ppm H2O2 using as liquid-injection may be recommended to mitigate the adverse effect of soil compactness particularly water-deficit stress in clay-rich soil for the sustainability of maize production.

Yazar "El Sabagh, Ayman" seçeneğine göre listele

Sayfa Başına Sonuç

Sıralama seçenekleri