ACCUMULATION OF VANADIUM DURING EMBRYOGENESIS IN THE VANADIUM-RICH ASCIDIAN, ASCIDIA-GEMMATA

被引：8
|
作者：
MICHIBATA, H [1 ]
UCHIYAMA, J [1 ]
SEKI, Y [1 ]
NUMAKUNAI, T [1 ]
UYAMA, T [1 ]
机构：
[1] TOHOKU UNIV,ASAMUSHI MARINE BIOL STN,ASAMUSHI,AOMORI 039,JAPAN
来源：
BIOLOGICAL TRACE ELEMENT RESEARCH | 1992年 / 34卷 / 03期
关键词：
ASCIDIAN; TUNICATE; VANADIUM; ACCUMULATION; EMBRYOGENESIS;
D O I：
10.1007/BF02783677
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
It is a remarkable and previously unrecognized fact that ascidians, which are known to contain high levels of vanadium in their blood cells, begin to accumulate vanadium during embryogenesis. This study revealed that the accumulation starts quite dramatically 2 wk after fertilization, and 2 mo later, the amount of vanadium in larvae is 600,000 times higher than that in the unfertilized egg. These results were obtained by neutron activation analysis, a highly sensitive method for determining levels of vanadium, in the Ascidia gemmata, the ascidian that contains the highest known levels of vanadium and accumulates vanadium at 150 mM in its blood cells, a concentration that corresponds to 4,000,000 times the concentration in sea-water.
引用
收藏
页码：219 / 223
页数：5
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