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缺磷胁迫后四尾栅藻在富磷环境中对磷的吸收动力学

姚 波 席北斗 胡春明 栗越妍 许其功 刘鸿亮

姚 波, 席北斗, 胡春明, 栗越妍, 许其功, 刘鸿亮. 缺磷胁迫后四尾栅藻在富磷环境中对磷的吸收动力学[J]. 环境科学研究, 2010, 23(4): 420-425.
引用本文: 姚 波, 席北斗, 胡春明, 栗越妍, 许其功, 刘鸿亮. 缺磷胁迫后四尾栅藻在富磷环境中对磷的吸收动力学[J]. 环境科学研究, 2010, 23(4): 420-425.
YAO Bo, XI Bei-dou, HU Chun-ming, LI Yue-yan, XU Qi-gong, LIU Hong-liang. Phosphorous Absorption Dynamics of Starved Scenedesmus Quadricauda in Phosphate-replete Medium[J]. Research of Environmental Sciences, 2010, 23(4): 420-425.
Citation: YAO Bo, XI Bei-dou, HU Chun-ming, LI Yue-yan, XU Qi-gong, LIU Hong-liang. Phosphorous Absorption Dynamics of Starved Scenedesmus Quadricauda in Phosphate-replete Medium[J]. Research of Environmental Sciences, 2010, 23(4): 420-425.

缺磷胁迫后四尾栅藻在富磷环境中对磷的吸收动力学

基金项目: 国家高技术发展研究计划(863)项目(2006AA10Z411);国家重点基础研究发展计划(973)项目(2008CB418000)

Phosphorous Absorption Dynamics of Starved Scenedesmus Quadricauda in Phosphate-replete Medium

  • 摘要: 研究了四尾栅藻(Scenedesmus quadricauda)受到不同程度缺磷胁迫后在富磷培养基中吸收磷的短期动力学过程,分析了磷在基质、细胞表面和细胞内的迁移变化过程.结果表明:经过0,30和60 h磷饥饿处理后的藻细胞,单个细胞内的磷含量分别为5.64×10-9,5.52×10-9和2.71×10-9 mg;其在富磷培养基中的最大磷吸收速率分别为0.047×10-9,0.098×10-9和0.045×10-9 mg/min(以单细胞计);稳定时单个细胞内的磷含量分别为5.60×10-9,7.07×10-9和4.20×10-9 mg. 经0 h饥饿处理后的藻细胞在移入富磷培养基后短时间内出现明显的内磷释放过程,经30 h饥饿处理后的藻细胞对磷的“奢侈”吸收现象明显. 此外,四尾栅藻细胞表面存在较明显的磷吸附现象,在磷充足环境中吸附量约占细胞总磷(表面吸附磷+细胞内磷)含量的1/10.

     

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出版历程
  • 收稿日期:  2009-10-10
  • 修回日期:  2009-12-09
  • 刊出日期:  2010-04-25

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