-
1
المؤلفون: Karina Šírová, Marek Vaculík
المصدر: South African Journal of Botany. 147:1181-1187
مصطلحات موضوعية: 0106 biological sciences, Cadmium, biology, Epidermis (botany), Cuticle, Aloe ferox, Biomass, chemistry.chemical_element, Heavy metals, Environmental pollution, Plant Science, biology.organism_classification, 01 natural sciences, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, chemistry, Botany, Plant species, 010606 plant biology & botany
الوصف: Heavy metals like cadmium (Cd) are a serious threat for living organisms due to increased global environmental pollution. Aloe ferox Mill. is a very important species of the genus Aloe, especially from a medical point of view, because it is a source of biologically active substances and it is often used in the traditional medicine. Since the knowledge about the effect of heavy metals, like Cd on growth of Aloe species is scarce, this study showed the effect of Cd on anatomical, morphological and physiological properties of this important medicinal plant species. We found that Cd affected the leaf morphology and decreased biomass of the aboveground plant part. Cd also affected cuticle deposition and increased the number of stomata in the abaxial and adaxial epidermis of leaves. Roots treated with Cd showed lower lignification and decreased level of membrane lipids peroxidation than control roots. Cadmium concentration was the highest in the roots; however, relatively high portion of Cd is being translocated to the leaves. This might be dangerous as Aloe is well known medicinal plant with content of active secondary metabolites mainly in the leaves.
-
2
المؤلفون: Khalil Beiki, Mohammad Reza Aminizadeh, Mohammad Gorji, Mohammad Hossein Rouhani, Mohammad Amin Samih, Mehdi Zarabi
المصدر: Journal of Plant Protection Research, Vol 59, Iss 1, Pp 26-31 (2019)
مصطلحات موضوعية: Sitophilus granarius, biology, Sitophilus, zinc, food and beverages, Plant culture, Soil Science, Nanoparticle, chemistry.chemical_element, Plant Science, Zinc, biology.organism_classification, SB1-1110, Silica nanoparticles, chemistry, silica, Curculionidae, nanoparticles, insecticidal, Agronomy and Crop Science, Nuclear chemistry
الوصف: The granary weevil, Sitophilus granarius (L.), is one of the most important internal feeders of stored grain. Nanotechnology has become one of the most promising new approaches for pest control in recent years. In our screening program, laboratory trials were conducted to determine the effectiveness of silica nanoparticles (SNPs) and zinc nanoparticles (ZNPs) against the larval stage and adults of S. granarius on stored wheat. Nanoparticles of silica and zinc were synthesized through a solvothermal method. They were then used to prepare insecticidal solutions of different concentrations and tested on S. granarius. Silica nanoparticles (SNPs) were found to be highly effective against S. granarius causing 100% mortality after 2 weeks. ZNPs were moderately effective against this pest.
-
3
المؤلفون: Jozef Pažitný, Katarína Adamčíková, Zuzana Jánošíková
المصدر: Journal of Plant Protection Research, Vol 60, Iss 4, Pp 399-405 (2020)
مصطلحات موضوعية: In vitro test, in vitro test, Metal ions in aqueous solution, fungi, antifungal activity, zinc oxide, Soil Science, chemistry.chemical_element, Plant Science, Zinc, lcsh:Plant culture, Biology, biology.organism_classification, Silver chloride, chemistry.chemical_compound, inorganic reagents, chemistry, in planta assay, lcsh:SB1-1110, Cryphonectria, silver chloride, Agronomy and Crop Science, Inhibitory effect, Mycelium, Nuclear chemistry
الوصف: In the current study the antifungal activity of inorganic reagents was tested against Cryphonectria parasitica in vitro in a mycelial growth inhibition test. Three reagents, each consisting of chloride silver (AgCl) in combination with (1) aluminum oxide − Al2O3, (2) zinc oxide − ZnO, and (3) Al2O3 and titanium dioxide – TiO2, were tested. Significant differences of the tested reagents on the growth of C. parasitica were recorded. The study demonstrated that silver in mixture with ZnO had an antifungal effect and significantly reduced the mycelial growth of C. parasitica in vitro. The mixture of AgCl with the other two combinations of inorganic metal oxides had no inhibition effect on the growth of the pathogen. It was confirmed that ZnO (applied in a single compound test) is responsible for inhibition of C. parasitica mycelium growth. A preliminary in planta assay was performed but statistically significant differences were not recorded in the average increment of canker length.
-
4
المؤلفون: Fayez Sati, Tawfiq Qubbaj
المصدر: Canadian Journal of Plant Science. 102:375-384
مصطلحات موضوعية: food.ingredient, biology, chemistry.chemical_element, Plant Science, Horticulture, Calcium, engineering.material, biology.organism_classification, food, chemistry, Coating, Mucilage, Cactus, engineering, Postharvest, Gum arabic, Solanum, Agronomy and Crop Science
الوصف: The current work investigates the impact of postharvest applications of calcium chloride (CaCl2) in combination with either 10% gum arabic or 50% cactus mucilage on the quality parameters and storability of tomato fruit (Izmir variety), at ambient storage conditions [21 ± 1 °C, relative humidity (RH) 45% ± 2%]. The tomato fruits were dipped in 6% CaCl2 for 10 min and then coated with either 10% gum arabic or 50% cactus mucilage for 3 min. During the time-course of storage, the fruit attributes, such as fresh fruit weight loss, fruit decay, firmness, titratable acidity (TA), total soluble solids (TSS), and color development were assessed. The results revealed a significant (P ≤ 0.05) effect of fruit postharvest treatment with 6% CaCl2 for 10 min combined with postharvest coating treatments with either 10% gum arabic or 50% cactus mucilage for 3 min on reducing fruit fresh weight loss, and decay percent of fruits. Fruit firmness, TA, and TSS were preserved compared with untreated fruit. In addition, treated fruits took more time to develop from pink to full red compared with untreated fruit. Hence, coating with natural substances combined with CaCl2 preserved the overall quality parameters and enhanced the shelf life of tomato fruit even after three weeks of storage at ambient temperature.
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::3e13cbed8eb469ce79c861440d3e1658
https://doi.org/10.1139/cjps-2021-0164 -
5
المؤلفون: Archana N. Sah, Sweta Bawari, Devesh Tewari
المصدر: South African Journal of Botany. 145:218-227
مصطلحات موضوعية: 0106 biological sciences, Kidney, biology, Chemistry, chemistry.chemical_element, Plant Science, Pharmacology, Calcium, medicine.disease, biology.organism_classification, Hyperuricosuria, 01 natural sciences, Oxalate, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, chemistry.chemical_compound, medicine.anatomical_structure, medicine, Crystalluria, Prunus cerasoides, Uric acid, Hypercalciuria, medicine.symptom, 010606 plant biology & botany
الوصف: Prunus cerasoides D. Don is a plant of great venerative value in the Himalayan region. The fruits and seed kernels of this plant are traditionally used for the treatment of urinary stones. Present study was aimed to demonstrate the in vitro and preclinical antilithic potential of the hydroethanolic extract of Prunus cerasoides fruits against calcium oxalate urolithiasis. In vitro antiurolithiatic screening was done by nucleation, and aggregation assay, while preclinical evaluation was carried out on ethylene glycol (0.75% v/v) and ammonium chloride (1% w/v) rendered urolithiasic male Wistar rats. P. cerasoides fruit extract induced nucleation of multiple small sized calcium oxalate crystals and inhibited their aggregation in the metastable solutions. P. cerasoides fruit extract to a large extent prevented lithogenic treatment induced anorexia, weight loss, polydipsia, polyuria, crystalluria, hypercalciuria, hyperoxaluria, hyperuricosuria, hyperphosphaturia, hypocitraturia and hypomagnesuria. It also showed preventive effect on the deposition of calcium, oxalate and phosphate in kidney tissues and exhibited ameliorative effect on serum urea, creatinine and uric acid. Moreover, inhibitory effect on oxidative stress induced degeneration of renal tissue was also recorded from histopathological analysis of the kidneys. PCFE showed promising outcomes as an antiurolithiatic both prophylactically and curatively. The effects can be attributed to its ability to restore the equilibrium between the urinary promoters and inhibitors of CaOx crystallization, its anticrystallization activity and its ameliorating effects on renal cellularity, urine and serum chemistry.
-
6
المؤلفون: D. Graw
المصدر: The New phytologistReferences. 82(3)
مصطلحات موضوعية: Tagetes minuta, Guizotia, biology, Physiology, Inoculation, Phosphorus, chemistry.chemical_element, Plant Science, biology.organism_classification, food.food, Arbuscular mycorrhiza, food, chemistry, Tagetes, Agronomy, Soil pH, Glomus
الوصف: Summary Tagetes minuta and Guizotia abyssinica reacted differently to changes in soil pH and to fertilization with various phosphates in spite of inoculation with the same strain of Glomus macrocarpus. At pH 4.3, mycorrhizal Guizotia was unable to absorb P from all the compounds with the result that growth was severely inhibited by inoculation, whereas mycorrhizal Tagetes grew well at this pH in the presence of Ca(H2PO4)2. H2O, Ca5(PO4)3OH and AlPO4. Phosphorus uptake and growth of mycorrhizal Guizotia were improved at pH 5-6 and surpassed the performance of non-mycorrhizal plants at pH 6-6. Growth of mycorrhizal Tagetes was reduced at pH 5.6 in the presence of Ca(H2PO4)2. H2O and Ca5(PO4)OH, but improved at pH 6.6 in all treatments with the exception of Ca5(PO4)3OH as P source.
-
7
المؤلفون: Miriam Cristina Pastelín Solano, Libia Iris Trejo Téllez, Odón Castañeda Castro, Fernando C. Gómez Merino, Eduardo Ariel Solano Pastelín
المصدر: Agrociencia. 55:597-610
مصطلحات موضوعية: Irrigation, biology, Chemistry, Sodium, chemistry.chemical_element, Plant Science, biology.organism_classification, Saccharum, Salinity, chemistry.chemical_compound, Horticulture, Nutrient, Chlorophyll, Animal Science and Zoology, Agronomy and Crop Science, Completely randomized design, General Environmental Science, Hybrid
الوصف: ugarcane (Saccharum spp. hybrids) is moderately sensitive to salinity and the effects on plant performance vary according to stress level and genotype. This study aimed to evaluate the effect of salt stress induced by application of different NaCl levels in the irrigation solution on plant height, indirect index of chlorophylls (SPAD), and macronutrients concentration (N, P, K, Ca, Mg, and S) and Na in leaves of two sugarcane varieties: CP 72-2086 and Mex 69-290. The experiment was set in a completely randomized design with a 2×5 factorial arrangement. The study factors were sugarcane variety (CP 72-2086 and Mex 69-290) and NaCl concentration (0.0, 71.8, 143.6, 215.4, and 282.7 mM NaCl). Salinity as a single factor negatively affected plant height, SPAD units and N and P concentration in leaves; Ca concentrations increased, while K, Mg and S remained unaffected by the tested NaCl levels. Mex 69-290 grew higher and concentrated greater levels of N and K. Interactions of factors showed that salinity reduced growth in both varieties, but this reduction was more pronounced in CP 72-2086. SPAD units were also significantly reduced by salinity in both varieties. Concentrations of N and P in leaves decreased in both varieties in response to NaCl, while those of K and Ca increased in Mex 69-290. Concentration of Na was higher in Mex 69-290 which exhibited better performance than CP 72-2086. Sodium concentrations in leaves increased in direct relation to the tested NaCl concentrations. Mex 69-290 reached higher concentrations of Na in leave tissues but displayed better health than CP 72-2086. Thus, the variety Mex 69-290 showed more efficient Na-tolerance mechanisms related to Ca and K concentrations, and an indirect chlorophyll index better than CP 72-2086.
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::7b6113f5e7e29acce32b6e17133523e4
https://doi.org/10.47163/agrociencia.v55i7.2606 -
8
المؤلفون: Prabal Bir Jung Rana, Hongdong Xiao, Paramsothy Jeyakumar, Shi Weiming, Jiayou Liu, Yu Min, Haijun Sun, Li Xuewen
المصدر: Phyton. 91:197-206
مصطلحات موضوعية: biology, Physiology, Phosphorus, chemistry.chemical_element, Plant Science, biology.organism_classification, Biochemistry, Nitrogen, chemistry, Agronomy, Yield (chemistry), Biochar, Environmental science, Brassica oleracea, Leaching (agriculture)
-
9
المؤلفون: Xiang Yao, Ling Li, Jianjian Li, Haoran Wang, Jingjing Wang, Shenghao Zhou, Chuanqiang Liu, Ying Chen, He Qingqing
المصدر: Phyton. 91:651-665
مصطلحات موضوعية: biology, Physiology, Phosphorus, chemistry.chemical_element, Plant Science, Eremochloa ophiuroides, biology.organism_classification, Phosphate, Stress resistance, Biochemistry, chemistry.chemical_compound, chemistry, Starvation response, Transcription factor
-
10
المؤلفون: Qunlu Liu, Fiza Liaquat, Yonghong Hu, Ye Kang, Xueying Wang, Jun Qin, Xianquan Zhang
المصدر: Phyton. 91:395-407
مصطلحات موضوعية: Hydrangea macrophylla, Horticulture, Human fertilization, Nutrient, chemistry, biology, Physiology, Environmental science, chemistry.chemical_element, Plant Science, biology.organism_classification, Biochemistry, Nitrogen
إعادة تعيين المنقحات
عرض المنقحات (%%عد%%)