Interaction of nitrogen and silicate fluctuations with salt stress on growth, and lipid production in Navicula sp.

Saadatkhah, Atefeh; Sobhanian, Hamid; Zoufan, Parzhak; Amini, Faedeh; Soltani, Neda

doi:10.22092/ijfs.2020.350889.0

تعداد نشریات	277
تعداد نشریات سازمان	76
تعداد شماره‌ها	2,061
تعداد مقالات	23,762
تعداد مشاهده مقاله	12,618,095
تعداد دریافت فایل اصل مقاله	10,295,511

	Interaction of nitrogen and silicate fluctuations with salt stress on growth, and lipid production in Navicula sp.
Iranian Journal of Fisheries Sciences
دوره 19، شماره 6، زمستان 2020، صفحه 3310-3326 اصل مقاله (553.17 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22092/ijfs.2020.350889.0
نویسندگان
Atefeh Saadatkhah¹؛ Hamid Sobhanian ¹؛ Parzhak Zoufan؛ Faedeh Amini؛ Neda Soltani²
¹Payam Noor University of Tehran
²1
چکیده
Diatoms have been recognized as source of important and applicable ingredients such as pigments and essential lipids. In this study, the effects of nitrogen and silicate changes accomplished by salt stress were investigated to analysis the chl a and chl c₁+c₂ contents, specific growth rate, total lipid percentage and fatty acid composition of Navicula sp. Samples were collected using by plankton net (30-micron pores) in spring 2019, from 6 stations in the Persian Gulf, Iran. In this study, samples were cultured under salt stress (control, 20ppt and 45ppt) and nutrients fluctuation (control: N: 0.5 mg, Si:0.3 mg, high nutrient culture: N:0.9 mg, Si:4.5 mg and without nutrient culture). There was a considerable decrease in dry weight and maximum growth rate under 45ppt salt treatment without silicate. The amount of chl a was not significantly changed under various treatments. The highest level of chl c₁+c₂ was related to 20ppt with nitrate (3.05 mg L^-1) and the lowest value was 0.38 mg L^-1 for 20ppt with silicate treatment. The highest level of total lipid content was obtained at 45ppt without silicate. Lipid composition analysis under 45ppt without silicate showed a significant increase (2.07 times compared to control) of palmitoleic acid (C16:1n-7) and trace amounts of polyunsaturated fatty acids were detected. Based on these results, it could be suggested that salt stress without silicate has an important effect to accumulate valuable lipids in Navicula sp. so that, they could be useful in medical and bioenergy applications.
کلیدواژه‌ها
Marine diatoms؛ Salt stress؛ Nutrients fluctuations؛ Palmitoleic acid؛ Navicula sp

آمار تعداد مشاهده مقاله: 4 تعداد دریافت فایل اصل مقاله: 1

Journal Management System. Designed by sinaweb.

آمار

Interaction of nitrogen and silicate fluctuations with salt stress on growth, and lipid production in Navicula sp.