稀土对蚯蚓体内氨基酸含量的影响

摘要/Abstract

摘要： 采用滤纸接触染毒法,分别进行了氯化稀土、氯化镧与土居动物蚯蚓接触染毒不同时间和不同浓度的试验,研究其对蚯蚓体内氨基酸含量的影响变化.结果表明,Re、La对蚯蚓体内的氨基酸含量影响较显著,在低浓度时总体表现为促进蚯蚓体内氨基酸的形成,而在高浓度状态下则使蚯蚓体内氨基酸含量下降,产生抑制作用.两种稀土在400mg·L^-1浓度时,蚯蚓体内氨基酸含量除脯氨酸外开始上升,随着作用时间延长,氨基酸含量逐渐下降.在100～1200mg·L^-1浓度范围,两种稀土均引起蚯蚓体内脯氨酸含量的下降,产生抑制作用.

关键词: 稀土, 蚯蚓, 氨基酸

Abstract: Rare earth elements are wide-used in China, but a few of studies were made on whether they had toxicity to soil fauna.In this paper, the filter paper contact method was used to study the influence of two rare earth elements on the dynamics of amino acids in earthworm body.The result showed that at low concentrations, the test rare earth elements increased the amino acid contents except proline, but decreased them at high concentrations.The amino acid contents began to increase at 400 mg· L^-1, while decreased with time.Both of the two rare earth elements reduced the proline content, and behaved inhibition effect at the range of 100～1200 mg·L^-1.

Key words: Rare earth elements, Earthworm, Amino acid

中图分类号:

X591

花日茂, 张自立, 吴新安, 张东春, 檀华荣. 稀土对蚯蚓体内氨基酸含量的影响[J]. 应用生态学报, 2003, (10): 1787-1789.

HUA Rimao, ZHANG Zili, WU Xinan, ZHANG Dongchun, TAN Huarong. Effects of rare earth elements on amino acid contents in earthworms[J]. Chinese Journal of Applied Ecology, 2003, (10): 1787-1789.

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