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富营养条件下不同形态氮对轮叶黑藻(Hydrilla verticillata)的生理影响 被引量:39

Effects of Different Form of Nitrogen on Hydrilla verticillata under Eutrophic Nutrient Condition
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摘要 在实验室条件下,研究了在富营养水平(ρ(TN)为4.0 mg/L,ρ(TP)为0.2 mg/L)下不同ρ(NH4+-N)/ρ(NO3--N)(4/0,5/1,1/1,1/5,0/4)对沉水植物轮叶黑藻(Hydrilla verticillata)生理生化的影响,以期阐明富营养化水体中不同形态氮对沉水植物的影响.结果表明,不同ρ(NH4+-N)/ρ(NO3--N)对轮叶黑藻的生理活动和生长具有明显的影响,随着培养液中ρ(NH4+-N)比例的上升,尤其当ρ(NH4+-N)/ρ(NO3--N)>1时,轮叶黑藻的相对生长率、叶绿素含量和可溶性糖含量明显下降,谷氨酰胺合成酶(GS)和过氧化物酶(POD)活性升高,超氧化物歧化酶(SOD)活性下降,蛋白质含量降低.当水体中铵盐含量上升到一定比例时对轮叶黑藻产生的胁迫作用,影响了其生理功能,抑制其生长. Effects of different ratios of ρ(NH4^+-N) to ρ(NO^3 - -N) (4/0, 5/1, 1/1, 1/5, 0/4) on Hydrilla verticillata were investigated under eutrophic nutrient condition (ρ(TN) is 4.0 mg/L, ρ(TP) is 0.2 mg/L) in laboratory. Results showed that there were obvious effects of physiological activity and growth of Hydrilla verticillata cultured in different ratios of ρ(NH4^+-N)and ρ( NO^3 - -N) solution. With the increase of proportions of NH4^+-N in culture solution, especially when the ratio of ρ(NH4^+-N) to ρ(NO3 -N) was higher than 1, the growth rate, the chlorophyll contents and the soluble sugar contents of Hydrilla verticillata decreased obviously, the protein contents and SOD activities deceased, and the activities of POD and GS increased. The results indicated that the raised NH4^+-N mass concentrations in water could be a stress to Hydrilla verticillata.
出处 《环境科学研究》 EI CAS CSCD 北大核心 2006年第1期71-74,79,共5页 Research of Environmental Sciences
基金 国家重点基础研究发展计划项目(2002CB412307)
关键词 富营养 轮叶黑藻 氮形态 生理影响 eutrophic Hydrilla verticillata nitrogen form physiological effect
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  • 1Middleboe A Land Markager S.Depth limit sand minimum light requirements of fresh water macrophytes[J].Freshwater Biology,1997,37:553-568.
  • 2Schmieder K.Littoral zone-GIS of lake constance:a useful tool in lake monitoring and autecological studies with submersed macrophytes[ J ].Aquatic Botany,1997,58:333-346.
  • 3王斌,李伟.不同N、P浓度条件下竹叶眼子菜的生理反应[J].生态学报,2002,22(10):1616-1621. 被引量:61
  • 4张彦东,白尚斌.氮素形态对树木养分吸收和生长的影响[J].应用生态学报,2003,14(11):2044-2048. 被引量:79
  • 5van Thai K,Wheeler Greg S,Center Ted D.Competition between hydrilla verticillata and vallisneria americana as influenced by soil fertility[J].Aquatic Botany,1999,62:225-233.
  • 6张宪政.植物叶绿素含量测定-丙酮乙醇混合液法.辽宁农业科学,1986,(3):26-28.
  • 7邓碧玉 袁勤生 李文杰.一种SOD的测活方法:邻苯三酚自氧化法的改进[J].生物化学与生物物理进展,1991,18(2):163-163.
  • 8Silberstein L,Siegel S M,Mukhtar A,et al.Comparative studies on Xanthoria parietina,a pollution-risistant lichen,and Ramalina duriaei,a sensitive species Ⅱ:evaluation of possible air pollution-protection mechanism[J].Lichenologist,1996,28:367-383.
  • 9Serna M D,Legaz B F,Primo-millo E.The influence of nitrogen concentration and ammonium/nitrate ratio on N-uptake,mineral composition and yield of citrus[J].Plant and Soil,1992,147:13-23.
  • 10Peuke D A,Tischner R.Nitrate uptake and rduction of aseptically cultivated spruce seedlings.Picea abies(L.) Karst[ J].J Exp Bot,1991,239:723-728.

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