Mohsen Gozari
Department of Microbiology, College of Science, Agriculture and Modern Technology, Shiraz Branch, Islamic Azad University, Shiraz, Iran
[ 1 ] - Antioxidant and cytotoxic activities of metabolites produced by a new marine Streptomyces sp. isolated from the sea cucumber Holothuria leucospilota
Marine microorganisms are important sources for novel natural products. Hence, the aim of this study was introducing the marine microorganisms with capability to produce antioxidant and cytotoxic metabolites. For this purpose, ten live sea cucumbers (Holothuria leucospilota) were collected from Larak Island. Then, their intestine contents were serially diluted and treated by heating (55 °c). 10...
[ 2 ] - Isolation and screening of antibacterial and enzyme producing marine actinobacteria to approach probiotics against some pathogenic vibrios in shrimp Litopenaeus vannamei
The application of new probiotics is a good strategy in the biological control of infectious diseases in aquaculture. Approximately 100 marine actinobacteria isolates were obtained from 10 sediment samples of shrimp farms. Heat treatment of sediment samples resulted in a selective reduction of the non actinobacterial heterotrophic microflora. Starch nitrate agar medium exhibited more efficacy t...
[ 3 ] - جداسازی، شناسایی و ارزیابی فعالیت ضد میکروبی اکتینومایست ها از رسوبات دریایی خلیج فارس در محدوده استان هرمزگان
اکتینومایست ها باکتریهای گرم مثبت ، رشته ای و مولد بخش عمده ترکیبات زیست فعال می باشند. این پژوهش با هدف جداسازی و شناسایی اکتینومایست های مولد آنتی بیوتیک از رسوبات دریایی خلیج فارس در محدوده استان هرمزگان انجام شد. از میان 3 محیط کشت منتخب محیط کشت 1M با جداسازی 32 ایزوله بیشترین کارایی را نشان داد. تیمار حرارتی 100 درجه سانتیگراد به مدت 60 دقیقه با جداسازی 26 ایزوله بهترین نتیجه را ارائه نمو...
[ 4 ] - Isolation and screening of antibacterial and enzyme producing marine actinobacteria to approach probiotics against some pathogenic vibrios in shrimp Litopenaeus vannamei
The application of new probiotics is a good strategy in the biological control of infectious diseases in aquaculture. Approximately 100 marine actinobacteria isolates were obtained from 10 sediment samples of shrimp farms. Heat treatment of sediment samples resulted in a selective reduction of the non actinobacterial heterotrophic microflora. Starch nitrate agar medium exhibited more effic...
[ 5 ] - جداسازی، شناسایی و ارزیابی فعالیت اکتینوباکتری های مزارع گندم به منظور کنترل زیستی آفات قارچی
زمینه و هدف: امروزه آفت‌کش‌ها به‌منظورحفظ امنیت غذایی به‌طورگسترده‌ای درسراسرجهان مورداستفاده قرارمی‌گیرند. به دلیل اثرات نامطلوب و ماندگاری بالا، این ترکیبات ازآلاینده‌های مهم محیط‌زیست محسوب می‌شوند. روش‌های کنترل زیستی آفات به‌عنوان بهترین جایگزین برای آفت‌کش‌های شیمیایی به شمار می‌روند. این مطالعه باهدف جداسازی و شناسایی اکتینوباکتری های مولد ترکیبات ضد قار...
[ 6 ] - Isolation and evaluation of cytotoxic and antioxidant activity of bioactive metabolites of cultured actinobacteria in Persian Gulf marine sediments
Screening bacteria for bioactive compounds is the first step in the drug discovery programs. The aim of the present research was to achieve cytotoxic and antioxidant metabolites from actinobacteria of Persian Gulf sediments and to investigate the effects of combinations of seven treatments and six isolation media on the selective isolation process. A total of 395 actinobacterial isolates were c...
[ 7 ] - Molecular identification and phylogenetic analysis of Vibrio harveyi strains isolated from Pacific white shrimp (Litopenaeus vannamei Boone, 1931) in Tiab region, Hormozgan province
In this research Vibrio harveyi strains were isolated and identified from hepatopancreas of Litopenaeus vannamei from Tiab region, Hormozgan province. Shrimps samples were collected from five different ponds in northern and southern Tiab shrimp culture sites. Isolation phase was performed by dilution and inoculation of hepatopancreas samples on thiosulfate citrate bile salts sucrose agar medium...
[ 8 ] - Evaluation of antibacterial activity of Pseudomonas species isolated from Pacific white shrimp (Litopenaeus vannamei Boone, 1931) against pathogenic Vibrio spp.
In this research antibacterial activity of Pseudomonas isolates derived from hepatopancreas of Litopenaeus vannamei were evaluated against pathogenic Vibrio spp. Shrimp samples collected from 9 different ponds in Tiab region- Hormozgan province. Hepatopancreas samples of collected shrimps were inoculated in three different isolation media. Pseudomonas Isolation Agar medium revealed highest yiel...
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