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001-es BibID:BIBFORM107918
Első szerző:Alsaeedi, Abdullah
Cím:Enhancing seed germination and seedlings development of common bean (Phaseolus vulgaris) by SiO2 nanoparticles / Abdullah Alsaeedi, Hassan El-Ramady, Tarek Alshaal, Mahdi Almohsen
Dátum:2017
ISSN:2357-0369
Megjegyzések:We still lack knowledge concerning the mode of action of engineered nanoparticles in agriculture. The key point of this study is to investigate the role of nano-silica (NS) to enhance the seed germination and growth development of common bean. Four different concentrations of NS suspensions (100, 200, 300, and 400 mg L-1) were supplemented to nursery and growth media. Our results showed that 300 mg L-1 of NS increased the final germination percentage from 82.3 to 97.7%, the germination speed from 24.9 to 36.2% / day, the vigour index from 14.3 to 20.2, and decreased the mean germination time from 4.3 to 3.3 days. Strikingly, 300 mg L-1 of NS increased the root dry mass of common bean seedlings by 93.5%,the shoot dry mass by 78.7%, the root length by 32.7%, and the shoot length by 13.2% versus untreated seedlings.This study proved that NS is able to improve the germination and growth of common bean as a result for altering some physiochemical reactions after penetrating the seed coat.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Egyptian Journal of Soil Science. - 57 : 0 (2017), p. 407-415. -
További szerzők:El-Ramady, Hassan (1969-) (agrármérnök) Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) Almohsen, Mahdi
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2.

001-es BibID:BIBFORM107893
035-os BibID:(Scopus)85130798366
Első szerző:Alsaeedi, Abdullah
Cím:Silicon- and nanosilicon-mediated drought and waterlogging stress tolerance in plants / Abdullah Alsaeedi, Mohamed M. Elgarawani, Tarek Alshaal, Nevien Elhawat
Dátum:2022
Megjegyzések:Crops lose more than 50% of their yields when exposed to biotic/abiotic stress. Increasing world population requires increased production even from the same cultivated area. To do so, yield losses have to be diminished alongside supporting growing crops under biotic/abiotic stress to maximize productivity as well as sustainability. Food/feed safety and security have gained remarkable interest from both policymakers and the public. The utilization of several micronutrients in their nanoscale has been widely increased in the last few years. Water stress, either deficit or excess (waterlogging), is one of the two major abiotic stressors that severely reduce productivity along with salinity. Silicon (Si) has shown enough to alleviate the deleterious impacts of either water deficit (drought) or waterlogging on plant development and productivity. Considering the abovementioned facts, here in the present chapter, efforts have been made to largely and concisely analyze and review the impacts of drought and waterlogging on the nutritional status, physiology, biochemistry, molecular, and development of plants. Also, the mode of action of Si and silica nanoparticles in mitigating the detrimental impacts of drought or waterlogging stress has been discussed.
ISBN:978-0-323-91225-9
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok könyvfejezet
könyvrészlet
Megjelenés:Silicon and Nano-silicon in Environmental Stress Management and Crop Quality Improvement : Progress and Prospects / eds. Hassan Etesami, Abdullah H. Al Saeedi, Hassan El-Ramady, Masayuki Fujita, Mohammad Pessarakli, Mohammad Anwar Hossain. - p. 121-152. -
További szerzők:El-Garawany, Mohamed Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) Elhawat, Nevien Adel (1984-) (agrármérnök)
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3.

001-es BibID:BIBFORM107897
Első szerző:Alsaeedi, Abdullah
Cím:Application of silica nanoparticles induces seed germination and growth of cucumber (Cucumis sativus) / A. H. Alsaeedi, M. M. Elgarawany, H. El-Ramady, T. Alshaal, A. O. A. AL-Otaibi
Dátum:2019
ISSN:1319-1039 1658-4287
Megjegyzések:Five rates of nano-silica (NS) suspensions (0, 100, 200, 300 and 400 mg L-1) were used to study their effects on seed germination and growth development of cucumber (Cucumis sativus). The rate of 200 mg L-1 significantly increased final germination%, germination speed, vigor index, and germination index by 28.7, 70.3, 46.7 and 68.8 %, respectively, compared to untreated seeds. However, it reduced the mean germination time by 31.7%. Similarly, 200 mg L-1 NS had the highest fresh and dry weight of germinant. However, all NS treatments enhanced the seed germination and growth development in comparison to control.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:28 : 1 (2019), p. 57-68. -
További szerzők:El-Garawany, Mohamed El-Ramady, Hassan (1969-) (agrármérnök) Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) Al-Otaibi, Awadh
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4.

001-es BibID:BIBFORM107527
035-os BibID:(WOS)000409962200037 (Scopus)85026821127
Első szerző:Alsaeedi, Abdullah
Cím:Engineered silica nanoparticles alleviate the detrimental effects of Na+ stress on germination and growth of common bean (Phaseolus vulgaris) / Abdullah H. Alsaeedi, Hassan El-Ramady, Tarek Alshaal, Mohamed El-Garawani, Nevien Elhawat, Mahdi Almohsen
Dátum:2017
ISSN:0944-1344 1614-7499
Megjegyzések:During the past 10 years, exploiting engineered nanoparticles in agricultural sector has been rapidly increased. Nanoparticles are used to increase the productivity of different crops particularly under biotic and abiotic stresses. This study aims to test the ability of nanosilica (NS) to ameliorate the detrimental impact of Na+ with different concentrations on the seed germination and the growth of common bean seedlings. Five doses of Na+ have been prepared from NaCl, i.e., 1000, 2000, 3000, 4000, and 5000 mg L-1, and distilled water was applied as a control. Seeds and seedlings were treated with three different NS concentrations (100, 200, and 300 mg L-1). The results proved that Na+ concentrations had detrimental effects on all measured parameters. However, treating seeds and seedlings with NS improved their growth and resulted in higher values for all measurements. For instance, the addition of 300 mg L-1 NS leads to an increase of the final germination percentage,vigor index, and germination speed for seeds irrigated with 5000 mg Na+ L-1 by 19.7, 80.7, and 22.6%, respectively. Although common bean seedlings could not grow at the highest level of Na+, fortification seedlings with NS helped them to grow well under 5000 mg L-1 of Na+. An increase of 11.1 and 23.1% has been measured for shoot and root lengths after treating seedlings with 300 mg L-1 NS under irrigation with 5000 mg Na+ L-1 solutions, and also at the same treatment, shoot and root dry masses are enhanced by 110.9 and 328.0%, respectively. These results proved the importance of using NS to relieve the detrimental effects of Na+-derived salinity. This finding could be reinforced by low Na content which was measured in plant tissues after treating seedlings with 300 mg L-1 of NS.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Environmental Science and Pollution Research. - 24 : 27 (2017), p. 21917-21928. -
További szerzők:El-Ramady, Hassan (1969-) (agrármérnök) Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) El-Garawany, Mohamed Elhawat, Nevien Adel (1984-) (agrármérnök) Almohsen, Mahdi
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5.

001-es BibID:BIBFORM107524
035-os BibID:(Scopus)85042186157 (WOS)000428832200017
Első szerző:Alsaeedi, Abdullah
Cím:Exogenous nanosilica improves germination and growth of cucumber by maintaining K+/Na+ ratio under elevated Na+ stress / Abdullah Alsaeedi, Hassan El-Ramady, Tarek Alshaal, Mohamed El-Garawani, Nevien Elhawat, Awadh Al-Otaibi
Dátum:2018
ISSN:0981-9428
Megjegyzések:The current work was aimed to elucidate the role of engineered nanosilica (SiNPs) particles to mitigate the damaging impacts of Na+-derived salinity on cucumber (Cucumis sativus) Beit Alpha variety by conducting in vitro experiments applying various Na+ concentrations i.e. 0, 1000, 2000, 3000, 4000 and 5000 mg L?1. By treating seeds and seedlings, respectively, of cucumber with SiNPs (0, 100, 200 and 300 ppm) and subsequent determination some germination and vegetative parameters as well as chemical analysis of seedlings, we verified that SiNPs succeeded to alleviate the detrimental effects of high Na+ salinity by increasing germination parameters and vegetative growth of cucumber seedlings. Even as little as 100 ppm of N-Si results in considerable improvement of seed germination and seedlings growth of cucumber compared to the control, while 200 ppm was optimal among the doses tested. At 5000 mg Na+ L?1, applying SiNPs with 200 ppm increased final germination percentage by 101% over control, vigor index by 101%, germination rate index by 116%, germination index by 110%, fresh mass by 13%, K+/Na+ ratio by 77%, shoot dry mass by 384%, root dry mass by 304% and plant height by 70%. The results mentioned in this paper obviously outline the large practical relevance of SiNPs and imply that applying of SiNPs for cucumber seeds and seedlings under high Na+-derived salinity enhances germination and growth as a result for decreasing Na+ uptake and sequentially improves high K+/Na+ ratio.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Nanosilica
Seed germination
Seedlings development
Germination rate index
Na+ -stress
Cucumber
Megjelenés:Plant Physiology And Biochemistry. - 125 (2018), p. 164-171. -
További szerzők:El-Ramady, Hassan (1969-) (agrármérnök) Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) El-Garawany, Mohamed Elhawat, Nevien Adel (1984-) (agrármérnök) Al-Otaibi, Awadh
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6.

001-es BibID:BIBFORM107519
035-os BibID:(WOS)000469896200001 (Scopus)85062727999
Első szerző:Alsaeedi, Abdullah
Cím:Silica nanoparticles boost growth and productivity of cucumber under water deficit and salinity stresses by balancing nutrients uptake / Abdullah Alsaeedi, Hassan El-Ramady, Tarek Alshaal, Mohamed El-Garawany, Nevien Elhawat, Awadh Al-Otaibi
Dátum:2019
ISSN:0981-9428 1873-2690
Megjegyzések:The role of amorphous silica nanoparticles (SiNPs) in enhancing growth and yield of cucumber under water deficit and salinity stresses was assessed. A field experiment under greenhouse conditions was established using 4 different levels of SiNPs (100, 200, 300 and 400 mg kg(-1)) and 3 different watering regimes calculated based on crop evapotranspiration (ET,) (100, 85 and 70% of ETc). Electrical conductivity and sodium adsorption ratio of irrigation water were 1.7 dS m(-1) and 4.63 respectively. The results revealed that SiNPs improved growth and productivity of cucumber regardless of quantity of supplied water; however, the greatest increase corresponded to irrigating cucumber at the rate of 85% of ETc. Applying SiNPs at rate of 200 mg kg(-1) showed the greatest increase specially when cucumber plants received 85% of their ETc causing an increase of 20, 51 and 156% in plant height, chlorophyll and fruit yield, respectively, compared to untreated plants. These increases could be due to alerting nutrient uptake as SiNPs clearly increased contents of nitrogen (by 30%), potassium (by 52, 75 and 41% in root, stem and leaf, respectively) and silicon (by 51, 57, 8 and 78% in root, stem, leaf and fruit, respectively). Otherwise, same treatment reduced sodium uptake by 38, 77 and 38% in root, stem and leaf, respectively; consequently, potassium-sodium ratio increased by 149, 735 and 127% in root, stem and leaf, respectively. The significant role of SiNPs in mitigating water deficit and salinity stresses could be referred to high silicon content found in leaf which regulates water losses via transpiration. Also, high K content found in roots of cucumber helps plants to tolerate abiotic stresses as a result of maintaining ion homeostasis and regulating the osmotic balance as well as controlling stomatal opening which helps plants to adapt to salinity and water deficit stresses.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Water deficit
Salinity
Silica nanoparticles
Nutrient use efficiency
Cucumber
Megjelenés:Plant Physiology And Biochemistry. - 139 (2019), p. 1-10. -
További szerzők:El-Ramady, Hassan (1969-) (agrármérnök) Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) El-Garawany, Mohamed Elhawat, Nevien Adel (1984-) (agrármérnök) Al-Otaibi, Awadh
Pályázati támogatás:EFOP-3.6.2- 16-2017-00001
EFOP
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7.

001-es BibID:BIBFORM107889
Első szerző:Alshaal, Tarek Ali Ahmed Ibrahim (Soil Scientist)
Cím:The rhizosphere and plant nutrition under climate change / Tarek Alshaal, Hassan El-Ramady, Abdullah H. Al-Saeedi, Tarek Shalaby, Tamer Elsakhawy, Alaa E.-D. Omara, Aliaa Gad, Eman Hamad, Ayman El-Ghamry, Ahmed Mosa, Megahed Amer, Neama Abdalla
Dátum:2017
Megjegyzések:The plant root-soil interfaces could be considered the rhizosphere area, which is the most important active zone in the soils for different microbial activities, biodegradation of pollutants and plant nutrition. Polluted soils are characterized by low organic matter content, limiting their microbial activity, nutrient availability and degradation of pollutants. Soil phyto- and/or bioremediation is mainly based on the use of plant roots and their associated soil microorganisms, whereas conventional approaches are based on physico-chemical methods in soil remediation. Plant root exudates are the most important compounds in the rhizosphere, which play a crucial role in the interactions between plant roots and soil microbes. It is worthy to mention that several plant species and soil microbes have been used in soil remediation for different pollutants. The role of rhizosphere and its significance in plant nutrition are mainly controlled by the change in climatic attributes including temperature, moisture content, precipitation, etc. Therefore, global warming and climate changes do have a great and serious effect on the agricultural production through their effects on the rhizosphere and in turn plant nutrition. Hence, the aim of this review is to evaluate the significance of rhizosphere in plant nutrition under the changing climate. Soil biological activity and its security will be also highlighted
ISBN:978-3-319-58841-4
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok könyvfejezet
könyvrészlet
Plant nutrition
Rhizosphere
Climate change
Root exudates
Pollution
Megjelenés:Essential Plant Nutrients / Naeem, M., Ansari, A., Gill, S.. - p. 275-308. -
További szerzők:El-Ramady, Hassan (1969-) (agrármérnök) Alsaeedi, Abdullah Shalaby, Tarek Elsakhawy, Tamer Omara, Alaa El-Dein Gad, Aliaa Hamad, Eman El-Ghamry, Ayman M. Mosa, Ahmed Amer, Megahed M. Abdalla, Neama
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8.

001-es BibID:BIBFORM107888
035-os BibID:(WOS)000441181000013
Első szerző:El-Ramady, Hassan (agrármérnök)
Cím:Nanoremediation for Sustainable Crop Production / Hassan El-Ramady, Tarek Alshaal, Mohamed Abowaly, Neama Abdalla, Hussein S. Taha, Abdullah H. Al-Saeedi, Tarek Shalaby, Megahed Amer, Miklós Fári, Éva Domokos-Szabolcsy, Attila Sztrik, József Prokisch, Dirk Selmar, Elizabeth A. H. Pilon Smits, Marinus Pilon
Dátum:2017
Megjegyzések:Nanoremediation is a promising strategy to controlling pollution. Nanoremediation involves the use of nanomaterials and plants, named phyto-nanoremediation, animals, named zoo-nanoremediation and microbes, named microbial nanoremediation. Here we review environmental pollution, crop protection and nanoremediation.
ISBN:978-3-319-58496-6
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok könyvfejezet
könyvrészlet
Nanoremediation
Sustainable crop production
Polluted lands
Pollution
Megjelenés:Nanoscience in Food and Agriculture 5 / Ranjan, S., Dasgupta, N., Lichtfouse, E.. - p. 335-363. -
További szerzők:Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) Abowaly, Mohamed Abdalla, Neama Taha, Hussein S. Alsaeedi, Abdullah Shalaby, Tarek Amer, Megahed M. Fári Miklós (1953-) (kertészmérnök) Domokos-Szabolcsy Éva (1978-) (molekuláris biológus) Sztrik Attila (1983-) (táplálkozástudomány) Prokisch József (1966-) (vegyész) Selmar, Dirk Pilon-Smits, Elizabeth A. H. Pilon, Marinus
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