A Morphometric Study of Autochthonous Plum Genotypes Based on Multivariate Analysis     

Abdollah Khadivi-Khub  Maryam Barazandeh 《Erwerbs-Obstbau》2015,57(4):185-194

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Diversity of bacterial pathogens and their antimicrobial resistance profile among commensal rodents in Qatar     

Islam  Md Mazharul  Farag  Elmoubashar  Hassan  Mohammad Mahmudul  Enan  Khalid A.  Mohammad Sabeel  K. V.  Alhaddad  Maryam Mohammed  Smatti  Maria K.  Al-Marri  Abdulla Mohammad  Al-Zeyara  Abdul Azia  Al-Romaihi  Hamad  Yassine  Hadi M.  Sultan  Ali A.  Bansal  Devendra  Mkhize-Kwitshana  Zilungile 《Veterinary research communications》2022,46(2):487-498

Rodents are sources of many zoonotic pathogens that are of public health concern. This study investigated bacterial pathogens and assessed their antimicrobial resistance (AMR) patterns in commensal rodents in Qatar. A total of 148 rodents were captured between August 2019 and February 2020, and blood, ectoparasites, and visceral samples were collected. Gram-negative bacteria were isolated from the intestines, and blood plasma samples were used to detect antibodies against Brucella spp., Chlamydophila abortus, and Coxiella burnetii. PCR assays were performed to detect C. burnetii, Leptospira spp., Rickettsia spp., and Yersinia pestis in rodent tissues and ectoparasite samples. Antimicrobial resistance by the isolated intestinal bacteria was performed using an automated VITEK analyzer. A total of 13 bacterial species were isolated from the intestine samples, namely Acinetobacter baumannii, Aeromonas salmonicida, Citrobacter freundii, Citrobacter koseri, Enterobacter aerogenes, Enterobacter cloacae, Escherichia coli, Hafnia alvei, Klebsiella pneumoniae, Providencia stuartii, Proteus mirabilis, Pseudomonas aeruginosa, and Salmonella enterica. The majority of them were E. coli (54.63%), followed by P. mirabilis (17.59%) and K. pneumoniae (8.33%). Most of the pathogens were isolated from rodents obtained from livestock farms (50.46%), followed by agricultural farms (26.61%) and other sources (22.94%). No antibodies (0/148) were detected against Brucella spp., C. abortus, or C. burnetii. In addition, 31.58% (6/19) of the flea pools and one (1/1) mite pool was positive for Rickettsia spp., and no sample was positive for C. burnetii, Leptospira spp., and Y. pestis by PCR. A total of 43 (38%) bacterial isolates were identified as multidrug resistant (MDR), whereas A. salmonicida (n?=?1) did not show resistance to any tested antimicrobials. Over 50% of bacterial MDR isolates were resistant to ampicillin, cefalotin, doxycycline, nitrofurantoin, and tetracycline. The presence of MDR pathogens was not correlated with rodent species or the location of rodent trapping. Seven (11.86%) E. coli and 2 (22.2%) K. pneumoniae were extended-spectrum beta-lactamases (ESBL) producers. These findings suggest that rodents can be a source of opportunistic bacteria for human and animal transmission in Qatar. Further studies are needed for the molecular characterization of the identified bacteria in this study.

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Evaluation of spatial variability of the integral energy of plant available water and its influential properties in paddy soil     

Katigari  Maryam Shakouri  Shabanpour  Mahmoud  Davatgar  Naser  Vazifehdoust  Majid 《Paddy and Water Environment》2022,20(2):265-276

Paddy and Water Environment - Plant Available Water is the main concept for describing the existing water content in a soil profile. Along with this concept, Integral Energy shows the energy...  相似文献   

Combination effects of prednisolone and interleukin-4 protect bovine nasal cartilage explants from interleukin-1α induced degradation     

Yadegari M  Orazizadeh M  Hashemitabar M  Khodadadi A 《Iranian Biomedical Journal》2011,15(4):143-150

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Droplet-vitrification cryotherapy and thermotherapy as efficient tools for the eradication of apple chlorotic leaf spot virus and apple stem grooving virus from virus-infected quince in vitro cultures     

Farhadi-Tooli  Sakineh  Ghanbari  Alireza  Kermani  Maryam Jafarkhani  Zeinalabedini  Mehrshad  Bettoni  Jean Carlos  Naji  Amir Mohammad  Kazemi  Nooshin 《European journal of plant pathology / European Foundation for Plant Pathology》2022,162(1):31-43

European Journal of Plant Pathology - Viral diseases affect quince plant productivity and fruit quality. This study evaluated the effectiveness of droplet-vitrification cryotherapy and...  相似文献   

Effects of spatial,temporal, and spectral resolutions on the estimation of wheat and barley leaf area index using multi- and hyper-spectral data (case study: Karaj,Iran)     

Afrasiabian  Yasamin  Noory  Hamideh  Mokhtari  Ali  Nikoo  Maryam Razavi  Pourshakouri  Farrokh  Haghighatmehr  Parisa 《Precision Agriculture》2021,22(3):660-688

Precision Agriculture - Leaf area index (LAI) is a key parameter for the calculation of crop biophysical and biochemical processes. Therefore, the accurate estimates of LAI has been always of great...  相似文献   

Crop photosynthetic response to light quality and light intensity          下载免费PDF全文

Iram SHAFIQ  Sajad HUSSAIN  Muhammad Ali RAZA  Nasir IQBAL  Muhammad Ahsan ASGHAR  Ali RAZA  Yuan-fang FAN  Maryam MUMTAZ  Muhammad SHOAIB  Muhammad ANSAR  Abdul MANAF  Wen-yu YANG  Feng YANG 《农业科学学报》2021,20(1):4-23

Under natural conditions, plants constantly encounter various biotic and abiotic factors, which can potentially restrict plant growth and development and even limit crop productivity. Among various abiotic factors affecting plant photosynthesis, light serves as an important factor that drives carbon metabolism in plants and supports life on earth. The two components of light(light quality and light intensity) greatly affect plant photosynthesis and other plant's morphological, physiological and biochemical parameters. The response of plants to different spectral radiations and intensities differs in various species and also depends on growing conditions. To date, much research has been conducted regarding how different spectral radiations of varying intensity can affect plant growth and development. This review is an effort to briefly summarize the available information on the effects of light components on various plant parameters such as stem and leaf morphology and anatomy, stomatal development, photosynthetic apparatus, pigment composition, reactive oxygen species(ROS) production, antioxidants, and hormone production.  相似文献   

Simultaneous synthesis of nano ZnO and surface modification of polyester fabric     

Maryam?Mohammadi  Loghman?KarimiEmail author  Mohammad?Mirjalili 《Fibers and Polymers》2016,17(9):1371-1377

In this study, synthesis of zinc oxide nanoparticles was carried out along with the hydrolysis of polyester fabric using sodium hydroxide to increase the surface activity and enhance the nanoparticles adsorption. The polyester fabrics were treated with zinc acetate and sodium hydroxide at different bath conditions, ultrasound and stirrer, resulting in formation of ZnO nanospheres and ZnO nanorods. The presence of zinc oxide with different shapes on the surface of the polyester fabrics was confirmed by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Also, the X-ray diffraction patterns established the composition of wurtzite structure of zinc oxide. The self-cleaning property of treated polyester fabrics was evaluated through discoloring dye stain under sunlight irradiation. The antibacterial activities of the samples against two common pathogenic bacteria including Escherichia coli and Staphylococcus aureus were also assessed. The results indicated that the photocatalytic and antibacterial activities of the ultrasound treated polyester fabrics were superior compared to the stirrer treated samples.  相似文献   

EFFECT OF HUMIC ACID APPLICATION ON CADMIUM ACCUMULATION BY LETTUCE LEAVES     

Maryam Haghighi  Mohsen Kafi  Amir Khoshgoftarmanesh 《Journal of plant nutrition》2013,36(10):1521-1532

The objectives of this study were to determine the effects of nitrogen (N) forms and deficient and toxic rates of boron (B) on the growth, NO₃ accumulation, membrane permeability, mineral nutrition, and nitrogen use efficiency (NUE) of bunch onion (Allium cepa L. var. Radar) plants. Therefore, 20% of NO₃ in reference nutrient solution was replaced by NH₄, urea, or mixed amino acids (AA). To each of these solutions 3, 30, or 300 mmol m^?3 B was added. Fresh and dry weights were the same in the reference and mixed AA treatments, but NH₄ and urea decreased these growth parameters as compared to the reference. Mixed AA decreased the NO₃-N content while urea increased it, and NH₄ treatment yielded similar NO₃-N content as compared to the reference. The nitrogen content of plants was increased by NO₃ replacement with either NH₄ and, urea or mixed AA. At the 300 mmol m^?3 B rate, B content of plants was decreased by NH₄ and urea, but increased by the mixed AA treatment. Membrane permeability was increased by NH₄?replacement of NO₃. Nitrogen use efficiency was found the highest in the reference treatment. Nitrogen and NO₃-N contents were increased by the 300 mmol m^?3 B rate. Increasing B in nutrient solution increased the B contents of plants. Mixed AA treatment decreased the phosphorus (P) content of plants. Potassium (K) and chloride (Cl) contents of plants were decreased in the NH₄ treatment where B was applied at the 3 mmol m^?3 rate. These results suggest that bunch onion growers may reduce NO₃ content in onion tops by partially replacing NO₃ with amino acids without reducing yield.  相似文献   

Factors Influencing Consumers' Attitudes Toward Organic Agricultural Products     

Hamide Ranjbarshamsi  Maryam Omidi Najafabadi  S. J. F. Hosseini 《Journal Of Agricultural & Food Information》2013,14(2-3):110-119

The purpose of this study was to determine the factors influencing consumers' attitudes toward organic agricultural products. The study is correlational research. Results of regression analysis indicated that the variables of health awareness, knowledge of organic products, and consumers' motivations and age explained 32% of the changes in attitudes about organic products. The authors therefore recommend educational initiatives to increase knowledge and awareness and influence attitudes and consumption habits.  相似文献