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氮、硅限制对赤潮藻扁面角毛藻休眠孢子形成的影响
Authors
周茜茜
孙琳
+3 more
郑敏华
陈长平
高亚辉
Publication date
10 September 2009
Publisher
Abstract
休眠孢子的形成对于赤潮藻种群的保存、延续以及分布扩散等均具有重要的意义。通过单因子营养限制研究氮、硅对赤潮藻扁面角毛藻(Chaetoceros compressus)休眠孢子形成的影响,结果表明:培养基中氮的初始浓度对休眠孢子的出现时间有一定影响。氮的初始浓度越低,休眠孢子出现的时间越早;反之,氮的初始浓度越高,休眠孢子出现的时间越晚。氮缺乏是硅藻形成休眠孢子的必需条件之一,当培养基中氮含量低于10μmol.L-1时,扁面角毛藻可以形成休眠孢子。氮缺乏诱发的休眠孢子的形成需要大量的硅,当培养基中硅含量低于23μmol.L-1时,即使氮缺乏,扁面角毛藻也几乎不再继续形成休眠孢子。这说明硅藻休眠孢子的形成不仅受氮浓度的影响,还与硅浓度有关
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Last time updated on 16/06/2016