水生生物学报2024，Vol.48Issue(2)：222-231,10.DOI:10.7541/2023.2023.0069
盐度和pH对平凡舟形藻生长和油脂积累的影响
SALINITY AND PH ON THE GROWTH AND TOTAL LIPID CONTENT OF NAVICULA TRIVIALIS
摘要
Abstract
In order to study the effects of salinity and pH on the growth and lipid content of freshwater diatoms,we studied a strain of Navicula trivialis from field water samples,by setting different salinity 0,0.03,0.06,0.12,0.18,0.24 mol/L and pH 4.5,6.0,7.5,8.5,9.5 and 10.5 concentration stress.The effects of each treatment on the growth,chlorophy Ⅱ a content,chlorophy Ⅱ fluorescence parameters and lipid content of Navicula trivialis were determined.The results showed that the cell density and chlorophy Ⅱ a content of Navicula trivialis were the highest when the NaCl concentration was 0.12 mol/L and pH 7.5;When NaCl concentration was 0.24 mol/L and pH 7.5,the total lipid content was the highest,which was 34.93％and 33.5％,respectively.The results showed that the adaptability of Navicula trivialis to different salinity and pH was different,which affected its growth and lipid content to some extent.Finding the best culture conditions to improve the growth and total lipid content of Navicula trivialis provides basic data for the study of microalgae culture,and the regulation of salinity and pH can provide scientific basis for the large-scale culture of Navicula trivialis.At the same time,the sensitivity,response and adaptability of Navicula trivialis to the salinity and pH,which will affect the phytoplankton community under environmental changes to a certain extent.the study provides a new idea for in-depth discussion of the impact of salinity and pH changes on phytoplankton community structure.关键词
盐度/pH/生长/总脂含量/平凡舟形藻Key words
Salinity/pH/Growth/Total lipid content/Navicula trivialis分类
农业科技引用本文复制引用
信宏颖,梁金燕,王馨彤,刘妍,范亚文,陆欣鑫,隋丰阳..盐度和pH对平凡舟形藻生长和油脂积累的影响[J].水生生物学报,2024,48(2):222-231,10.基金项目
国家自然科学基金(31970213和31870187) （31970213和31870187）
黑龙江省优秀青年基金(YQ2020C032)资助[Support by the National Natural Science Foundation of China(31970213 and 31870187) （YQ2020C032）
the Natural Science Foundation of Heilongjiang Province for Excellent Young Scholars(YQ2020C032)] （YQ2020C032）
