نتایج جستجو برای: algae dunaliella salina
تعداد نتایج: 21195 فیلتر نتایج به سال:
جلبک Dunaliella جنس چیره تکسلولی یوکاریوت دریاچه ارومیه است که در سالهای اخیر به علت خشکسالی شدید دریاچه ارومیه تراکم جمعیت آن به شدت کاهش یافته است. در پژوهش حاضر، تنوع گونههای مختلف این جنس با روش مولکولی در تعدادی از ایستگاههای دریاچه ارومیه بررسی شد. کولی با انجام واکنش زنجیرهای پلیمراز (PCR) و استفاده از جفت پرایمر ژن 18srDNA، گونههای مختلف این جنس شناسایی شد. نمونهبرداری و جداسازی ...
Background & Aims: Plant extracts can change the expression of genes in cancer cells. Till now, no study has been performed on the effect of algae extract. The aim of this research was to study the changes in Bax apoptotic gene expression in glioblastoma cell line and to determine the rate of cell death in cancer cells treated with Dunalilla salina extract. U87 cell line contains glioblas...
Background: The objective of this study was to develop an efficient selectable marker for transgenic Dunaliella salina. Results: Tests of the sensitivity of D. salina to the antibiotic chloramphenicol and the herbicide Basta® showed that cells (1.0 × 10 cells/ml) treated with 1000 or 1500 μg/ml chloramphenicol died in 8 or 6 days, respectively, whereas D. salina cells (1.0 × 10 cells/ml) treate...
Aquaculture needs to provide live food such as Artemia and one of the most important issues in A. franciscana rearing, is a food supply. The instar I nauplii were fed in seven treatments including Wheat bran, Rice bran, Soy-meal and algae (Dunaliella salina). For each treatment calculated growth rate, survival percentage, and body composition. At the reproductive period, 35 pairs were individua...
Carotenoid content of microalga, Dunaliella salina was increased using different stress parameters, such as cell division inhibition (vinblastine), nitrogen starvation, high salinity and high irradiation with high temperature. Vinblastine had very little favourable effect. Salinity above 3 M significantly decreased the cell growth rate due to cell death but increased the per cell carotenoid con...
The glycerol metabolic pathway is a special cycle way; glycerol-3-phosphate dehydrogenase (G3pdh), glycerol-3-phosphate phosphatase (G3pp), dihydroxyacetone reductase (Dhar), and dihydroxyacetone kinase (Dhak) are the key enzymes around the pathway. Glycerol is an important osmolyte for Dunaliella salina to resist osmotic stress. In this study, comparative activities of the four enzymes in D. s...
dunaliella salina was isolated from maharlu salt lake in shiraz, iran, and was analyzed forthe effects of salinity stress on its growth, pigment content and ascorbate peroxidase activity. growth,expressed as number of cells ml-1, which was most rapid at 2 m nacl, was reduced at salinity extremes.during the exponential phase of growth, increasing salinity from 0.5 to 4 m nacl increased chl a fro...
In the Marseilles region (French Mediterranean coast), A. clausi is one of the most abundant copepod species of the Gulf of Fos while A. tonsa constitutes the almost exclusive copepod species of the Berre lagoon, a neighbouring semi-closed brackish area communicating with the gulf. As different ecophysiological capabilities to stand the various temperature, salinity and food conditions could ex...
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