Journal of Ecology and Health最新文献_第3页

Isolation and Characterization of Two Halophilic Bacillus (B. licheniformis and Bacillus sp) with Antifungal Activity 两种具有抗真菌活性的嗜盐芽孢杆菌(B. licheniformis和Bacillus sp)的分离与鉴定

Journal of Ecology and Health Pub Date : 2013-05-01 DOI: 10.12785/JEHE/010102

E. Nabti, N. Mokrane, M. Ghoul, H. Manyani, M. Dary, M. Megias

{"title":"Isolation and Characterization of Two Halophilic Bacillus (B. licheniformis and Bacillus sp) with Antifungal Activity","authors":"E. Nabti, N. Mokrane, M. Ghoul, H. Manyani, M. Dary, M. Megias","doi":"10.12785/JEHE/010102","DOIUrl":"https://doi.org/10.12785/JEHE/010102","url":null,"abstract":"New bacterial strains of Bacillus licheniformis and sp were isolated from the rhizosphere of potato, in front of the sea (Bejaia, Algeria). Strains were identified by phenotypic analyses: Gram s taining, mobility, catalase, oxidase, form of colony and cell morphology. Metabolic characters such carbon source, sugars, organic acids, aerobic/anaerobic respiratory system are revealed by API system 50CHB/E. The 16SrRNA gene was isolated and sequenced (1500 bp), and the phylogenic tree was established (bootstrap method). The first strain (RBA-E23) showed a very high similarity to Bacillu s licheniformis (DQ082997.1) (98%) and B. licheniformis (AF372616.1), but the second (RBA-E32) is classified as the out-gro up. Strains are halotolerants 300 and 400 mM/l NaCl, respectively. They used glycine betaine and proline as synthetic osmoprotectants, and marine algal extracts of Ulva lactucaas natural osmoprotectant. The two strains produce: high amount of auxine-phytohormone (IAA: 78 and 101 mg/l); different enzymes such as: cellulase, chitinase, protease, lipase, amylase and urease; siderophores and solubilize ino rganic phosphorus. The study of antifungal strains activity toward nine phyto pathogenic fungi Verticillium dahlia, Fusarium oxysporum, Botryotinia fuckiliana, Phytophthor a cinamomi, Phytophthora cactorum, Colletotrichum acutatum, Botrytis cinerea, Aspergillus Niger and Aspergillus flavus, shows an interesting inhibition activity with variable percentage of Growth inhibition (PGI %) against phytopathogens. Both of bacteria displayed more benefic characters, while the enzymes can be involved in the organic matter decomposition; utilization of the phytohormone-IAA as simulator of vegetable growth. Siderophores and phosphate solubilization are interesting in the fe rtilization of soil. Finally, strains could have potential application against phytopathogenic fungi.","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128720739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Antibacterial Activities of THYMUS VULGARIS and Rifmpicin on Methicillin Resistant STAPHYLOCOCCUS AUREUS (MRSA) 寻常胸腺和利福平对耐甲氧西林金黄色葡萄球菌(MRSA)的抑菌作用

Journal of Ecology and Health Pub Date : 2013-05-01 DOI: 10.12785/JEHE/010103

Salah G. Ali, E. Bakhiet, U. Abdul-Raouf

引用次数: 0

Can He-Ne Laser Induce Changes in Oxidative Stress and Antioxidant Activities of Wheat Cultivars from Kazakhstan and Egypt? He-Ne激光诱导哈萨克斯坦和埃及小麦品种氧化应激和抗氧化活性的变化?

Journal of Ecology and Health Pub Date : 2013-03-01 DOI: 10.5567/SCIINTL.2013.39.50

Abdelghafar M. Abu-Elsaoud, S. Tuleukhanov

{"title":"Can He-Ne Laser Induce Changes in Oxidative Stress and Antioxidant Activities of Wheat Cultivars from Kazakhstan and Egypt?","authors":"Abdelghafar M. Abu-Elsaoud, S. Tuleukhanov","doi":"10.5567/SCIINTL.2013.39.50","DOIUrl":"https://doi.org/10.5567/SCIINTL.2013.39.50","url":null,"abstract":"Recently the biostimulatory role of physical methods have been observed in major agricultural crop plants, He-Ne laser is one of the most significant biophysical method for enhancing not only seed germination but also plant growth and development. Seeds of wheat cultivars from Kazakhstan (cultivars; aksay, kazakhstanskaya-10 and eretrospermum-350) and from Egypt (cultivar; sakha-168) were exposed to He-Ne laser irradiations with 5 mW. mm −2 power intensity for 1 to 1800 seconds exposition time. Various germination and growth parameters and indices were recorded and calculated. Changes on the rate of superoxide dismutase activity, lipid peroxidation level and hydrogen peroxide accumulation were monitored. Wheat seed pre-treatment caused significant increase in various germination parameters including germination percentage, germination rate (seed.h −1 ), relative germination rate coefficient ( Wk) and enhancing various growth parameters. Several doses of He-Ne laser promoted the germination to a maximum of 100 germination, increasing also the germination rate. Moreover, seed pretreatment with different doses of He-Ne laser caused significant changes in levels of hydrogen peroxide, lipid peroxidation an d Cu-Zn superoxide dismutase activity. Hydrogen peroxide accumulation and lipid peroxidation levels increased dramatically with the incre asing doses of helium neon laser compared to control. However Cu-Zn superoxide dismutase activities dropped following seed pretreatment with He-Ne laser compared to control.","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"85 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130788214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Comparative Study on Two Different Up Scale Locally Available Construction Microbial Fuel Cells 两种不同的大规模本地可用建筑微生物燃料电池的比较研究

Journal of Ecology and Health Pub Date : 1900-01-01 DOI: 10.18576/JEHE/060102

Saleh. G. Ali, M. S. Mohammad, E. Bakhiet, S. Hassan

引用次数: 1

Survey of the Most Common Insect Species on Some Foraging Crops of Honeybees in Dakhla Oasis, New Valley Governorate, Egypt 埃及新谷省Dakhla绿洲部分采食作物蜜蜂最常见昆虫种类调查

Journal of Ecology and Health Pub Date : 1900-01-01 DOI: 10.18576/JEHE/050105

Mahmoud S. O. Mabrouk, M. Mahbob

引用次数: 5

Diversity and Biotechnological Applications of Some Fungi that Isolated from Unusual Soil Samples in Egypt 从埃及特殊土壤样品中分离的真菌的多样性及其生物技术应用

Journal of Ecology and Health Pub Date : 1900-01-01 DOI: 10.18576/JEHE/050104

A. Farrag, R. Shehata, H. El-Sheikh, N. Abo-Dahab, A. Ali

{"title":"Diversity and Biotechnological Applications of Some Fungi that Isolated from Unusual Soil Samples in Egypt","authors":"A. Farrag, R. Shehata, H. El-Sheikh, N. Abo-Dahab, A. Ali","doi":"10.18576/JEHE/050104","DOIUrl":"https://doi.org/10.18576/JEHE/050104","url":null,"abstract":"Thirty fungal isolates, which include nineteen species and belong to five genera, were isolated from unusual soil samples from Assiut and Wadi El-Natrun, Egypt. All fungal cultures were cultivated on YES medium for secondary metabolites production; the culture filtrates were separately subjected to solvent extraction by: Ethyl Acetate, Petroleum Ether, Dichloromethane and Dichloromethane: Methanol (2: 1); the fungal mat was extracted by Dichloromethane: Methanol (2: 1) only. The obtained Ethyl Acetate extracts of all fungal isolates were tested for their antimicrobial activity against six different pathogenic bacterial strains; three of them were gram positive bacteria (Staphylococcus Aureus, Bacillus Cereus, and Streptococcus Pneumonia); the others were gram negative bacteria (Sertatia Marcescens, E. Coli and Salmonella Typhi). In addition, against five pathogenic fungal strains (Aspergillus Candidus, Aspergillus Flavus, Aspergillus Niger, Aspergillus Terreus and Geotrichum Candidum), the tested Ethyl Acetate fungal extract showed marked antimicrobial activity against most of the tested strains. On the other hand, the highest antibacterial activity was recorded in case of the Penicillium Chrysogenum extract, but the highest antifungal activity was recorded in case of the Penicillium Aurantiogriseum extract. The secondary metabolites of all fungal isolates were separated on TLC plates, and the most four active strains were completely identified as Aspergillus Candidus, Aspergillus Terreus, Penicillium Aurantiogriseum and Penicillium Chrysogenum. Furthermore, the antimicrobial, anti-insect, anti-herbal and anti-tumor activities of its extracts were evaluated.","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130858628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Research of Improved Case adaptation Technology for Steelmaking and Concasting Dynamic Scheduling 炼钢连铸动态调度改进案例自适应技术研究

Journal of Ecology and Health Pub Date : 1900-01-01 DOI: 10.18576/JEHE/050102

Guozhang Jiang, Juan Du, Gongfa Li

引用次数: 0

Environmental Assessment of the Tree Plant Leaves According to their Physiological State and Fluctuating Asymmetry Indices of Morphological Features, Which Widely Spread in Baku 巴库地区广泛分布的乔木植物叶片生理状态及形态特征波动不对称指数的环境评价

Journal of Ecology and Health Pub Date : 1900-01-01 DOI: 10.18576/JEHE/050103

Afat O. Mammadova, Narmin M. Farzaliyeva, Roza N. Mammadova

引用次数: 3

Changes in Contents of Free Amino Acids in Germinating Seed Organs of Three Senna Species under Temperature, Osmotic Stress and Zinc Concentration 温度、渗透胁迫和锌浓度对三种泻泻植物种子萌发器官游离氨基酸含量的影响

Journal of Ecology and Health Pub Date : 1900-01-01 DOI: 10.18576/jehe/060105

H. El-Sharkawi, K. Farghali, A. Rayan, Dalia M. Sayed