[Physiological responses of Ceratophyllum demersum under different nutritional conditions].
[Physiological responses of Ceratophyllum demersum under different nutritional conditions].
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发表时间：
2005-02
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通讯作者：
Jun Wang;Yufei Gu;Zengyin Zhu;Bin Wu;Daqiang Yin
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作者：
Jun Wang;Yufei Gu;Zengyin Zhu;Bin Wu;Daqiang Yin
采用静态试验方法，研究了金鱼藻（Ceratophyllum demersum）在中、富、肥营养液和Hoagland氏液中的蛋白质、叶绿素含量以及过氧化物酶（POD）和超氧化物歧化酶（SOD）活性的变化。结果表明，营养液中总氮（TN）和总磷（TP）浓度的变化对C.德默瑟姆当TN和TP浓度分别低于1 mg × L（-1）和0.1mg × L（-1）时，植株蛋白质和叶绿素含量下降。富营养化环境中生长的植株SOD、POD活性较高。结果表明，C. demersum对富营养化条件（1 mg TN × L（-1）和0.1 mg TP × L（-1））的适应性更强，营养盐浓度（e.例如，在一个实施例中，hypertrophic和Hoagland的解决方案）是一个压力，以C。影响其抗寒生理。
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 x L(-1) and 0.1 mg x L(-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 x L(-1) and 0.1 mg TP x L(-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.