摘要
以非洲乍得湖钝顶螺旋藻为实验材料,在0.3 mol.L-1NaCl胁迫下,通过生理学方法研究了不同浓度Ce3+对螺旋藻生长的影响。结果表明:Ce3+浓度在8.104～16.208μmol.L-1之间时,促进了螺旋藻的生长以及叶绿素a的合成;Ce3+浓度在16.208～48.62μmol.L-1之间时,促进可溶性蛋白的合成;Ce3+浓度为8.104μmol.L-1时藻体MDA含量最高,之后MDA含量随着Ce3+处理浓度的增加逐步降低。这说明Ce3+在一定的浓度范围内可减轻NaCl对螺旋藻的胁迫作用,促进螺旋藻可溶性蛋白和叶绿素a的积累,降低藻细胞MDA的浓度,高浓度Ce3+则会与NaCl协同、抑制螺旋藻的生长。
The effects of Ce3＋ on the growth of Spirulina from Chad lake of Africa under 0.3 mol·L-1 NaCl stress were studied by the physiological method.The results showed that Ce3＋could promote the growth and the accumulation of chlorophyll a in the range of 8.104~16.208 μmol·L-1;and promote the synthesis of soluble protein of Spirulina in the range of 16.208~48.62 μmol·L-1;the content of MDA was the highest when the concentration of Ce3＋ was 8.104 μmol·L-1,and dropped with the increasing of content of Ce3＋.Ce3＋could relieve the salt stress to Spirulina in a certain range,could promote the accumulation of chlorophyll a and soluble protein of Spirulina,and reduced the content of MDA.And the high Ce3＋concentration could aggravate the damage to the algae cells by cooperating with NaCl and inhibited the growth of Spirulina.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2013年第1期124-128,共5页
Journal of the Chinese Society of Rare Earths
基金
内蒙古自然科学基金项目(2011MS0519
2011MS0306)资助
