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Taxonomic implications of morphological variations and seed protein profile in Acacia Mill. (Fabaceae, Mimosoideae) 相思属植物形态变异和种子蛋白谱的分类意义。(Mimosoideae豆科)
Pub Date : 2023-01-01 DOI: 10.5455/egyjebb.20230513103233
Ethar A. Hussein, E. Kamel, Nagwan Hamdy
Acacia s.l. taxa in the Middle East are treated as a single genus and suffer from confusion in its discrimination because of morphological similarities between closely related taxa. So, the current study aims at revealing distinguishing characters, and assessing the taxonomic relationships between studied taxa using recently proposed genera versus Acacia s.l. genus in conventional classificatory systems. Macro-, micro-morphological characters, and SDS-protein pattern of 13 Acacia s.l. spp. were investigated focusing on seeds using the scanning electron microscope (SEM). The generated UPGMA-cluster based on 106 morphological and biochemical character-states split the studied Acacia s.l. taxa into two groups; (1) comprised genera of Vachellia, Acacia s.s. and Faidherbia, and (II) Senegalia genus. The present results gave accurate discrimination of genus Acacia s.l., confirmed the need of its retypification in the Middle East according to the new system of classification and show the close relation between Vachellia, each of Acacia s.s. and Faidherbia genera.
中东地区的金合欢(Acacia s.l.)分类群被视为一个单一属,由于近缘分类群之间的形态相似性,在识别上存在混淆。因此,本研究旨在利用新提出的金合欢属与传统分类系统中的金合欢属来揭示其特征,并评估其分类关系。以种子为研究对象,利用扫描电子显微镜(SEM)对13种金合欢的宏观、微观形态特征和sds -蛋白图谱进行了研究。基于106个形态和生化特征状态生成的upgma聚类将所研究的金合欢类群划分为两个类群;(1)包括Vachellia属、Acacia s.s s和Faidherbia属;(II) Senegalia属。本研究结果对金合欢属进行了准确的鉴别,证实了根据新的分类体系在中东地区进行重新分类的必要性,并表明金合欢属Vachellia、金合欢属和Faidherbia属之间存在密切的关系。
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引用次数: 0
Bacteriophage and probiotic therapy in the treatment of Pseudomonas aeruginosa burn infection and their synergistic effect 噬菌体与益生菌治疗铜绿假单胞菌烧伤感染及其协同作用
Pub Date : 2023-01-01 DOI: 10.5455/egyjebb.20221207072545
R. Zadeh, M. Zadeh, Mohammad Sholeh, Sajjad Asgharzadeh, Atieh Darbandi, Parisa Fashami, N. Amirmozafari
One of the most common bacteria in nosocomial and burn infections is Pseudomonas aeruginosa. Due to the high antibiotic resistance of P. aeruginosa and the lack of other effective therapeutic agents, treating diseases caused by this bacterium could be challenging. Therefore, finding novel solutions to control and prevent highly resistant strains of P. aeruginosa is paramount. After isolation and identification of Lactobacilli with known probiotic properties such as L. acidophilus, L. paracasei, L. rhamnosus, and L. bulgaricus using PCR technique, and preparation of their corresponding phage (PAO1 Φ), probiotics and phage were used individually and in combination to treat burn infection caused by P. aeruginosa in a mouse model. The results revealed that the combination of phage with probiotics can be highly effective for treating P. aeruginosa burn infections. Our study showed that the most effective multiple cocktails of Lactobacilli for the treatment of P. aeruginosa infection, were L. rhamnosus + L. bulgaricus + L. paracasei cocktail in mixture with phage (PAO1 Φ). The study proposes an alternative method for the treatment of P. aeruginosa infections. The combination of probiotics with phage could be proposed as a new therapeutic agent for treating P. aeruginosa infections.
医院感染和烧伤感染中最常见的细菌之一是铜绿假单胞菌。由于铜绿假单胞菌的高抗生素耐药性和缺乏其他有效的治疗剂,治疗由这种细菌引起的疾病可能具有挑战性。因此,寻找新的解决方案来控制和预防高耐药菌株铜绿假单胞菌是至关重要的。采用PCR技术分离鉴定出嗜酸乳杆菌、副干酪乳杆菌、鼠李糖乳杆菌和bulgaricus乳杆菌等已知益生菌特性的乳酸菌,并制备相应的噬菌体(PAO1 Φ),分别或联合应用益生菌和噬菌体治疗铜绿假单胞菌引起的小鼠模型烧伤感染。结果表明,噬菌体与益生菌联合治疗铜绿假单胞菌烧伤感染效果显著。我们的研究表明,治疗铜绿假单胞菌感染最有效的多种乳酸菌鸡尾酒是鼠李糖乳杆菌+保加利亚乳杆菌+副乳杆菌与噬菌体(PAO1 Φ)混合的鸡尾酒。该研究提出了一种治疗铜绿假单胞菌感染的替代方法。益生菌与噬菌体联合应用有望成为治疗铜绿假单胞菌感染的新药物。
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引用次数: 0
Molecular identification of Halophilic Microorganisms producing Exo-Halozymes by a culture-dependent approach from the North Sinai Solar saltern 北西奈太阳盐碱地产生外盐酶的嗜盐微生物的分子鉴定
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220726105555
Naglaa Elshafey, A. Elkashef, H. Hamedo, M. Mansour
Solar salterns are an ideal model for extreme environments since they contain a halophilic microorganisms that must adapt to these conditions. In North Sinai, these environments have not gotten much attention. However, the focus of our investigation was on the salterns' waters and saline soil. The study of this microflora showed that it had a lot of different shapes, functions, and ways of using energy. The molecular analysis provided us with a phylogenetic relationship that included Aspergillus isolates as well as archaeal isolates from the genera Haloarcula, Haloferex, and Halobacterium, and also bacteria related to Halomonas and Brevibacillus. The majority of isolates expressed hydrolytic enzymes at high salt concentrations. Finally, the North Sinai Solar Saltern is rich in halophilic populations that produce industrial hydrolytic enzymes.
太阳盐沼是极端环境的理想模型,因为它们含有必须适应这些条件的嗜盐微生物。在北西奈,这些环境没有得到太多关注。然而,我们的调查重点是盐碱地的水域和盐碱地。对这种微生物群的研究表明,它有很多不同的形状、功能和使用能量的方式。分子分析为我们提供了一种系统发育关系,包括分离的曲霉,从Haloarcula属,Haloferex属和Halobacterium属分离的古细菌,以及与Halomonas和Brevibacillus相关的细菌。大多数菌株在高盐浓度下表达水解酶。最后,北西奈太阳盐湖富含生产工业水解酶的嗜盐菌群。
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引用次数: 3
Taxonomical and genetics characterization of family Boraginaceae grown in Elba Mountain 厄尔巴山硼砂科植物的分类与遗传特征
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220729121826
E. Elsherbeny
The Boraginaceae family comprises around 2000 species within 145 genera with various therapeutic and pharmacological attributes. DNA banking can be considered a complementary method for preserving plant species by preserving genomic DNA at lower temperatures. This approach to maintaining biological information allows researchers to search for new genes and their products. Therefore, in this review, we describe and analyze the DNA barcoding of family Boraginaceae to conserve and further manipulate this rare and endangered plants species to enhance its yield and quality characteristics. The non-coding DNA regions (such as ITS and rbcL) are presumed to be more useful at lower taxonomic levels because of their faster evolutionary rates. The present study aims to inspect whether these plants can be categorized into different species or not, and DNA barcoding is used to clarify the dispute. The DNA barcode marker used ITS and rbcL, and sequence analysis was performed using the online tool BLAST of the NCBI database and based on maximum identity and dendrogram.
琉璃苣科包括145属约2000种,具有各种治疗和药理特性。DNA银行可以被认为是通过在较低温度下保存基因组DNA来保存植物物种的补充方法。这种保存生物信息的方法使研究人员能够寻找新的基因及其产物。因此,本文将对龙葵科植物的DNA条形码进行描述和分析,以保护和进一步利用这一珍稀濒危植物,提高其产量和品质特征。非编码DNA区域(如ITS和rbcL)被认为在较低的分类水平上更有用,因为它们的进化速度更快。本研究旨在检验这些植物是否可以被分类为不同的物种,并利用DNA条形码来澄清这一争议。DNA条形码标记采用ITS和rbcL,序列分析采用NCBI数据库在线工具BLAST,基于最大同一性和树突图进行。
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引用次数: 0
Assessment of some physiological responses of Carica papaya L. against lead treatment 番木瓜果实对铅处理的一些生理反应评价
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220407081622
O. Elshehaby, Doaa A. Galilah
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引用次数: 0
Antifungal Activity of Thymol Against Some Medically Important Fungi 百里香酚对一些重要医学真菌的抗真菌活性
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220120025332
G. Allah, A. Mahalawy, Iman Kholy, Samar S. Mohamed
Invasive fungal infections (IFIs) have emerged in the last three decades as an important cause of human disease. These infections treated particularly with triazole such as fluconazole, itraconazole and voriconazole but some serious adverse reactions have been reported in many studies . In vitro activities of 12 essential oils were evaluated against 6 clinically important fungal strains. Thyme oil was the most effective essential oil against all the tested fungal strains and Aspergillus flavus was the most susceptible with inhibition zone diameter and MIC values of 39 mm and 0.25 μg/ml, respectively. Active ingredients of thyme oil were analysed using GC/Mass chromatography and extracted by Thin Layer Chromatography (TLC). Thymol was the most active component against Aspergillus flavus with inhibition zone diameter and MIC values of 44 mm and 0.125 μg/ml, respectively. The inhibitory activity of thymol against Aspergillus flavus was confirmed using Transmission electron microscope.
侵袭性真菌感染(IFIs)在过去三十年中作为人类疾病的一个重要原因出现。这些感染主要用氟康唑、伊曲康唑和伏立康唑等三唑治疗,但许多研究报告了一些严重的不良反应。研究了12种精油对6种临床重要真菌的体外活性。百里香精油对真菌的抑菌效果最好,对黄曲霉的抑菌效果最好,抑菌带直径为39 mm, MIC值为0.25 μg/ml。采用气相色谱/质层色谱法对百里香精油的有效成分进行分析,并采用薄层色谱法对百里香精油进行提取。百里香酚对黄曲霉的抑制作用最强,抑制带直径为44 mm, MIC值为0.125 μg/ml。透射电镜法证实了百里香酚对黄曲霉的抑制作用。
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引用次数: 0
Impact of phosphate solubilizing fungi on soil properties and physiological parameters of pepper plants 磷酸盐增溶真菌对辣椒植株土壤性质和生理参数的影响
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220317090305
Marwa M Ragaey, N. Hussein, A. Khatib, M. Ismail, M. Dawood
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引用次数: 0
Utilization of nano calcium for improving wheat germination, growth, and metabolic activities 利用纳米钙促进小麦萌发、生长和代谢活性
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220823083832
Marwa Nakeep, Basma Khalaf, Samha Dowidar, A. Mohsen, M. Elhaak
The widespread availability of using nano technology can ensure food security through boosting agriculture production. Nanoparticles have potential to improve growth and yield of wheat crop. This paper studies effects of wheat grains priming in nanoparticles and bulk calcium hydroxide on germination, growth criteria, photosynthetic pigments, carbohydrates, and proteins content of wheat. Calcium hydroxide nanoparticles were 73nm size. Wheat grains were soaked for four hours in 0, 8.0, and 16.0 mM nanoparticles and 16 mM bulk solutions of calcium hydroxide for germination experiments in the laboratory. Also soaked grains were cultivated in clay-sandy soil (2:1 w/w), in small plastic bags in the green house of faculty of science for studying growth and some metabolic activities. Results showed that application of calcium hydroxide nanoparticles increased germination percentage significantly with 8 and 16 mM nanoparticles in comparison to control and calcium hydroxide bulk. Grain germination was hundred percentages with the 16.0 mM nanoparticles concentration. Root and shoot fresh weight and dry weight increased significantly (about 30%) at 8 and 16 mM as compared to control and calcium hydroxide bulk. Higher concentration (16 mM) of calcium hydroxide nanoparticles significantly enhanced fresh weight, dry weight, chlorophyll and protein content over control and calcium hydroxide bulk. Nonetheless, effect of 8 and 16mM caused more utilization of carbohydrates in the plant growth as compared to control. Calcium hydroxide nanoparticles have definite potential to increase crop growth and yield. Nonetheless, comprehensive experimentation is required to establish the most suitable concentration, size and mode of application of calcium hydroxide nanoparticles for higher growth and yield in the field crops.
纳米技术的广泛使用可以通过促进农业生产来确保粮食安全。纳米颗粒具有改善小麦生长和产量的潜力。研究了纳米颗粒和散装氢氧化钙对小麦种子萌发、生长指标、光合色素、碳水化合物和蛋白质含量的影响。氢氧化钙纳米颗粒尺寸为73nm。小麦籽粒分别在0、8.0、16.0 mM纳米颗粒和16 mM体积氢氧化钙溶液中浸泡4小时,在实验室进行萌发实验。在理学院温室中,将浸泡过的籽粒置于粘土-砂土中(2:1 w/w),装在小塑料袋中,研究其生长和一些代谢活动。结果表明,与对照和氢氧化钙体积相比,施用纳米氢氧化钙显著提高了8和16 mM纳米颗粒的发芽率。当纳米颗粒浓度为16.0 mM时,籽粒萌发率为100%。在8和16 mM处,根、梢鲜重和干重较对照和氢氧化钙体显著增加(约30%)。较高浓度(16 mM)的氢氧化钙纳米颗粒显著提高了样品的鲜重、干重、叶绿素和蛋白质含量。然而,8和16mM的影响使植物生长中碳水化合物的利用率高于对照。氢氧化钙纳米颗粒具有提高作物生长和产量的潜力。然而,为了在大田作物中获得更高的生长和产量,需要进行全面的实验来确定最合适的氢氧化钙纳米颗粒的浓度、大小和应用模式。
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引用次数: 0
Exogenous application of neem extract enhances the control of bacterial spot of tomato grown in soilless culture system through modulating gas exchange attributes, osmolytes, antioxidant machinery and genes expression 外源施用印楝提取物通过调节气体交换特性、渗透物、抗氧化机制和基因表达,增强了无土栽培番茄对细菌性斑疹病的控制
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220327060847
Mohamed Esawi, Enas Ballat, A. Elsayed
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引用次数: 1
The impacts of gibberellic acid, kinetin, and naphthalene acetic acid on Ammi visnaga important medicinal compound (khellin) 赤霉素酸、动素和萘乙酸对虾蛄重要药用化合物的影响
Pub Date : 2022-01-01 DOI: 10.5455/egyjebb.20220727012311
M. Elhaak, M. Ahmed, M. Zayed, Dina Gad
The study aims to investigate effect of soaking Ammi visnaga seeds in the growth hormones gibberellic acid, kinetin, and naphthalene acetic acid (GA3, KN and NAA). Growth parameters at vegetative stage, in addition to the secondary compounds content especially khellin were measured using the HPLC analysis. Results showed that soaking in GA3 led to a noticeable increase in the length of the plant shoot, while the root depth increased by treatment with the NAA. Soaking seeds with GA3 100 ppm caused the highest plant weight with an increase by 63.38% compared with the control. High content of Chl. b and Carotenoids was observed by KN, while of Chl. it was by NAA. Soaking by the three plant hormones (GA3, KN and NAA) caused a slight increase in the content of the important medicinal component (khellin) in the plant seeds which suggested their utilization for increasing the medicinal value of Ammi visnaga.
本研究旨在研究紫菜种子浸泡在生长激素赤霉素酸、动素和萘乙酸(GA3、KN和NAA)中的影响。采用高效液相色谱法测定了植株营养期的生长参数和次生化合物的含量,特别是叶绿素含量。结果表明,GA3处理显著增加了植株的茎长,NAA处理显著增加了植株的根深。GA3 100 ppm浸泡处理的种子株重最高,比对照提高了63.38%。Chl含量高。b和类胡萝卜素用KN测定,Chl测定。它是由NAA提供的。三种植物激素(GA3、KN和NAA)浸泡后,植物种子中重要药用成分羽化素(khellin)的含量略有增加,表明其可用于提高蘑菇的药用价值。
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引用次数: 0
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THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany)
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