营养胁迫对雨生红球藻虾青素累积的影响

被引:32
作者
庄惠如
施巧琴
卢海声
吴松刚
陈跃兴
陈健
机构
[1] 福建师范大学生物工程学院!福州
[2] 不详
关键词
雨生红球藻; 虾青素; 营养胁迫; 厚壁孢子;
D O I
暂无
中图分类号
Q945.78 [协迫生理学];
学科分类号
摘要
通过改变营养条件可诱导雨生红球藻积累虾青素。氮限制实验表明,色素的累积速率与原初氮浓度成反比,也与细胞分裂速率负相关,当BBM培养基中的NaNO3浓度减半时(0.13g·L-1),对细胞增殖及色素累积相对都有利。在高光强下,进一步进行氮、磷饥饿,红球藻细胞分裂明显受抑,但色素的累积作用增强,培养9d,细胞内次生类胡萝卜素的含量分别比对照组提高141.0%和60.5%,色素的累积高峰也比对照组提前2-4d。提高NaCl浓度至0.8%时的盐胁迫,不能诱导虾育素的形成。实验结果还表明,色素的累积与厚壁孢子的形成并不完全相关,游动细胞也能大量积累红色色素。
引用
收藏
页码:208 / 212
页数:5
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