文献类型：期刊文献

中文题名：铈对三角帆蚌钙代谢影响的研究

英文题名：Effects of Cerium(III) Treatments on Calcium Metabolism of Freshwater Pearl Mussel Hyriopsis Cumingii

作者：任岗[1,2];金叶飞[1];施维林[1,3];陈瑛[1]

机构：[1]绍兴文理学院生命科学学院,浙江绍兴312000;[2]浙江大学动物科学学院,浙江杭州310058;[3]州科技学院环境科学与工程学院,江苏苏州215011

年份：2013

卷号：31

期号：3

起止页码：344

中文期刊名：中国稀土学报

外文期刊名：Journal of the Chinese Society of Rare Earths

收录：CSTPCD、、北大核心2011、Scopus、北大核心、CSCD、CSCD2013_2014

基金：浙江省自然科学基金(Y3110024);绍兴市公益技术项目(2012B70029);黑龙江省教育厅科学技术研究项目(12513088)资助

语种：中文

中文关键词：稀土铈;三角帆蚌;钙代谢;珍珠质沉积

外文关键词：cerium; Hyriopsis cum#tgii; calcium metabolism; nacre deposition

中文摘要：研究了不同浓度稀土Ce3+(0,0.5,1.0,2.5 mg·L-1)处理30,60 d时对2龄植片三角帆蚌钙代谢和珍珠质沉积的影响。结果表明:Ce3+对三角帆蚌珍珠质沉积量、外套膜和鳃组织中组织钙含量、钙调蛋白基因mRNA的表达量、腺苷三磷酸酶(ATPase)活性、碱性磷酸酶(ALP)活性的影响总体上均表现出明显的"低促高抑"的剂量效应和高浓度下"先促后抑"的时间效应。推测稀土Ce3+对钙调蛋白基因mRNA表达水平及关键酶活性的调节可能是其影响三角帆蚌钙代谢和珍珠质沉积的途径之一。

外文摘要：Abstract： In present study, the effects of rare earth cerium on calcium metabolism and nacre deposition in the 2-year-old freshwater pearl mussel Hyriopsis cum- ingii were studied under different Ce3＋ concentrations （0, 0.5, 1.0, and 2.5 mg·L-1 ） and treatment time （30 and 60 d）. The results showed that, in general, cerium had the significant dose-dependent effects on nacre deposition and calcium content, calmodulin mR- NA expression level, enzyme activities of alkaline phosphatase （ ALP ）, Na ＋ -K ＋ -ATPase, and Ca2＋ Mg2＋ -ATPase in tissues of mantle and gill. Under higher Ce3＋ concentration （2.5 mg＇L-l）, Ce3＋ had the time effect on the above parameters, which were improved at 30 d and decreased at 60 d. Our results implied that modulation of the calmodulin mRNA tran- scripts and enzyme activities in gill and mantle might be one of viable way of Ce3 ＋to affect calcium metabo- lism and nacre deposition in H. cumingii.