盐度-光照强度-温度对小环藻Cyclotella sp. SHOU-B108生长及ARA和EPA含量的影响

蔡敬; 王星宇; 曾蓓蓓; 黄旭雄; 穆亮亮; 危立坤

文章摘要

蔡敬,王星宇,曾蓓蓓,黄旭雄,穆亮亮,危立坤.盐度-光照强度-温度对小环藻Cyclotella sp. SHOU-B108生长及ARA和EPA含量的影响[J].上海海洋大学学报,2016,25(3):406-414.
CAI Jing,WANG Xingyu,ZENG Beibei,HUANG Xuxiong,MU Liangliang,WEI Likun.Effects of salinity, light intensity and temperature on the growth, ARA and EPA contents in diatom Cyclotella sp. SHOU-B108[J].Journal of Shanghai Ocean University,2016,25(3):406-414.

盐度-光照强度-温度对小环藻Cyclotella sp. SHOU-B108生长及ARA和EPA含量的影响

Effects of salinity, light intensity and temperature on the growth, ARA and EPA contents in diatom Cyclotella sp. SHOU-B108

投稿时间：2015-11-24 修订日期：2016-02-27

DOI：10.12024/jsou.20151101606

中文关键词: 小环藻盐度光照强度温度花生四烯酸二十碳五烯酸

英文关键词: Cyclotella sp. salinity light intensity temperature ARA EPA

基金项目:上海市科技兴农项目[沪农科推字(2013)第2-1号];上海市科技兴农项目[沪农科攻字(2015)第1-2号];国家海洋局项目(SHME2011SW02)

作者	单位	E-mail
蔡敬	上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306
王星宇	上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306
曾蓓蓓	上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306
黄旭雄	上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306 上海市水产养殖工程技术研究中心, 上海 201306 水产动物遗传育种中心上海市协同创新中心, 上海 201306	xxhuang@shou.edu.cn
穆亮亮	上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306
危立坤	上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306

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中文摘要:

采用L₉(3⁴)正交实验法,研究了盐度(3、6、9)、光照强度[20、40、60 μmol/(m²·s)]和温度(10、20、30℃)3因素对半咸水小环藻(Cyclotella sp.) SHOU-B108生长及细胞中ARA和EPA含量的影响。结果表明:培养10 d后小环藻在盐度6、光照强度40 μmol/(m²·s)和温度30℃组具有最大生物量(干重)。盐度、光照强度和温度对小环藻细胞ARA和EPA含量的影响均有显著的交互作用,但温度是影响藻细胞ARA和EPA含量的主要因素。低的盐度(3)和高的温度(30℃)有利于小环藻细胞积累ARA;而高的光照强度[60 μmol/(m²·s)]则有利于细胞积累EPA。本研究表明环境因子对小环藻细胞中不同的脂肪酸会产生不同的诱导效应,通过调控小环藻的培养条件,能够获得特定营养物质含量丰富的饵料微藻。

英文摘要:

Effects of different levels of factors including salinity (3, 6, 9), light intensity [20, 40, 60 μmol/(m²·s)] and temperature (10, 20, 30℃) on the growth, ARA and EPA contents in diatom Cyclotella sp. SHOU-B108 were studied by orthogonal experiments. The results showed that the highest biomass (dry weight) of Cyclotella sp. was obtained in the treatment of salinity 6, light intensity 40 μmol/(m²·s) and temperature 30℃ on 10th day. There were significant interactions among salinity, light intensity and temperature on the ARA and EPA contents in Cyclotella sp.. Temperature was the main factor influencing the ARA and EPA contents of the diatom. Lower salinity (3) combined with higher temperature (30℃) was beneficial to accumulating ARA but high light intensity (60 μmol/(m²·s)) was beneficial for accumulating EPA in the cells of Cyclotella sp.. It is therefore suggested that different fatty acids in the cell display different reflections of the same environmental change, and Cyclotella sp. SHOU-B108 cells with specific high nutritional value could be harvested by optimizing the salinity-light intensity-culture temperature combinations.

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