不同营养状态下金鱼藻的生理响应

应用生态学报 ›› 2005, Vol. 16 ›› Issue (2): 337-340.

不同营养状态下金鱼藻的生理响应

王珺, 顾宇飞, 朱增银, 武斌, 尹大强

南京大学环境学院, 污染控制与资源化研究国家重点实验室, 南京, 210093

收稿日期:2004-01-13 修回日期:2004-04-13 出版日期:2005-02-15 发布日期:2005-02-15
通讯作者: 尹大强
基金资助:
国家重点基础研究发展规划资助项目(2002CB412307).

Physiological responses of Ceratophyllum demersum under different nutritional conditions

WANG Jun, GU Yufei, Zhu Zengyin, WU Bin, YIN Daqiang

State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210093, China

Received:2004-01-13 Revised:2004-04-13 Online:2005-02-15 Published:2005-02-15

摘要/Abstract

摘要： 通过静态模拟实验,比较研究了不同营养水平(中营养、富营养、重富营养和Hoagland植物培养液)下培养的金鱼藻(Ceratophyllum demersum)的蛋白质、叶绿素含量,过氧化物酶(POD)及超氧化物酶(SOD)活性变化.研究发现,总N、总P的变化会影响金鱼藻的生物合成,当水环境总氮浓度低于1 mg·L^-1,总磷浓度低于0.1 mg·L^-1时,金鱼藻茎叶的叶绿素合成较低,其茎蛋白含量迅速下降.金鱼藻在富营养水平(1 mg TN·L^-1,0.1 mg TP·L^-1)下抗氧化防御酶活跃,POD、SOD活性增高.研究表明,金鱼藻较适应于富营养水环境,水体营养盐继续增加对金鱼藻有胁迫作用,过高营养盐浓度(重富营养和Hoagland 培养液)影响金鱼藻的抗逆能力.

关键词: 金鱼藻, 生理反应, 富营养, 胁迫

Abstract: With static experiments,this paper investigated the protein and chlorophyll contents,and the peroxidase (POD) and superoxide dismutase (SOD) activities of Ceratophyllum demersum cultured in meso-,eutro-and hypertrophic and Hoagland's solutions.The results showed that the changes of total N (TN) and total P (TP) concentrations in nutrient solutions had an obvious effect on the biosynthesis of C.demersum.When the concentrations of TN and TP were less than 1 mg稬^-1 and 0.1 mg稬^-1,respectively,the protein and chlorophyll contents of plant declined.The plant from eutrophic solution had higher SOD and POD activities.It was indicated that C.demersum was more preferable to eutropic condition (1 mg TN稬^-1 and 0.1 mg TP稬^-1),and the raised concentration of nutrients (e.g.,hypertrophic and Hoagland's solutions) was a stress to C.demersum and could affect its hardiness physiology.

Key words: Ceratophyllum demersum, Physiological response, Eutrophication, Stress

中图分类号:

X524

王珺, 顾宇飞, 朱增银, 武斌, 尹大强. 不同营养状态下金鱼藻的生理响应[J]. 应用生态学报, 2005, 16(2): 337-340.

WANG Jun, GU Yufei, Zhu Zengyin, WU Bin, YIN Daqiang . Physiological responses of Ceratophyllum demersum under different nutritional conditions[J]. Chinese Journal of Applied Ecology, 2005, 16(2): 337-340.

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