| 盐度和营养限制对盐田底栖硅藻披针舟形藻生长及胞外多糖产率的影响 |
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| 引用本文： | 马美荣,李朋富,陈丽,孟飞飞,刘志礼.盐度和营养限制对盐田底栖硅藻披针舟形藻生长及胞外多糖产率的影响[J].海洋湖沼通报,2009(1). |
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| 作者姓名： | 马美荣 李朋富 陈丽 孟飞飞 刘志礼 |
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| 作者单位： | 南京大学生命科学学院,江苏,南京,210093 |
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| 基金项目： | 国家自然科学基金重大项目，教育部留学回国人员科研启动基金 |
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| 摘 要： | 从台南盐场藻垫中分离得到底栖硅藻披针舟形藻(Navicula lanceolata),该藻生长的最适盐度是1.6% NaCl.在最适盐度之上,随着盐度增大,藻细胞生长受到轻微抑制.氮磷营养限制条件下披针舟形藻生长受到严重抑制,氮营养限制比磷营养限制对藻生长的抑制作用更显著.高盐度和氮磷营养限制条件下,披针舟形藻胞外多糖(EPS)产率都明显增加,氮营养限制比磷营养限制对EPS产率的促进作用更显著.这表明在盐田高盐和氮磷营养限制条件下披针舟形藻产生更多的EPS,有利于藻垫的形成和稳定.
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| 关 键 词： | 盐田 底栖硅藻 披针舟形藻 胞外多糖 盐度 营养限制 |
EFFECTS OF SALINITY AND NUTRIENT LIMITATION ON THE GROWTH AND EXOPOLYSACCHARIDE PRODUCTION OF THE SALTERN BENTHIC DIATOM NAVICULA LANCEOLATA |
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| MA Meirong,LI Pengfu,CHEN Li,MENG Feifei,LIU Zhili.EFFECTS OF SALINITY AND NUTRIENT LIMITATION ON THE GROWTH AND EXOPOLYSACCHARIDE PRODUCTION OF THE SALTERN BENTHIC DIATOM NAVICULA LANCEOLATA[J].Transaction of Oceanology and Limnology,2009(1). |
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| Authors: | MA Meirong LI Pengfu CHEN Li MENG Feifei LIU Zhili |
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| Institution: | School of Life Sciences;Nanjing University;Nanjing 210093;China |
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| Abstract: | The benthic diatom Navicula lanceolata was isolated from the algal mat in Tainan Saltworks.The optimum salinity for the growth of Navicula lanceolata was 1.6% NaCl.Above the optimum salinity,the growth of the alga was inhibited slightly with the increasing salinity.The growth of the alga was inhibited severely under nitrogen or phosphorous limitation conditions.The inhibitory effect of nitrogen limitation on growth was stronger than phosphorous limitation.The exopolysaccharide(EPS) production was enhanced u... |
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| Keywords: | saltworks benthic diatom Navicula lanceolata exopolysaccharide salinity nutrient limitation |
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