海洋科学2016，Vol.40Issue(4)：40-45,6.DOI:10.11759/hykx20150206003
不同氮、磷浓度对布氏双尾藻休眠孢子形成的影响
Effects of different concentrations of nitrogen and phosphorus on the resting spore formation ofDitylum brightwellii (West) Grunow
摘要
Abstract
In some species of diatoms, resting spore formation is a common phenomenon observed during adverse environmental conditions and is usually related to the level of nitrogen (N)and phosphorus (P). This study presents the effects of different concentrations of N and P onDitylum brightwellii (West)Grunow resting spore formation. We counted the resting spores, calculated the resting spore densities, and quantified the nutrients in the medium. The results revealed thatD. brightwelliiformed resting spores when the N concentration in the culture medium fell below27μmol/L.Moreover,D. brightwelliiformed resting spores earlier when the initial N concentration was low. Resting spores all appeared at day 3 when P concentration was the single variable factor. P concentrations in these groups changed slightly. Under higher P concentrations (50μmol/L), the density and ratio of resting spores were both markedly higher than those under lower P concentrations (20μmol/L and 10μmol/L). The group with the lowest N and highest P concentrations (N: 20μmol/L, P: 50μmol/L)had the highest density and ratio of spores; thus, N and P had a mutual influence on resting spore formation.关键词
布氏双尾藻(Ditylum brightwellii)/氮/休眠孢子/磷Key words
Ditylum brightwellii/Nitrogen/Resting spores/Phosphate分类
农业科技引用本文复制引用
李朗,高亚辉,刘广发,梁君荣,赵龙,胡肖,徐华林,章军,陈长平..不同氮、磷浓度对布氏双尾藻休眠孢子形成的影响[J].海洋科学,2016,40(4):40-45,6.基金项目
国家自然科学基金(NO.41276100) （NO.41276100）
中国科学院战略性先导科技专项(XDA11020103) （XDA11020103）
福建省自然科学基金(2010J01232)[Foundation：Natural Science Foundation of China, No.41276100 （2010J01232）
CAS Strategic Priority Research Program, NO. XDA11020103 （）
Project sup-ported by the Natural Science Foundation of Fujian Province, China (NO.2101J01232)] （NO.2101J01232）
