Accumulation of alkaline earth metals by the green macroalga Bryopsis maxima
Accumulation of alkaline earth metals by the green macroalga Bryopsis maxima
复制标题
绿色大型藻类 Bryopsis maxima 积累碱土金属
DOI:
10.1007/s10534-015-9843-y
复制
发表时间:
2015
期刊:
影响因子:
3.5
通讯作者:
Hiroyuki Satoh
中科院分区:
文献类型:
--
作者:
Shigekazu Takahashi;Kyoko Aizawa;Saki Nakamura;Katsumi Nakayama;Shingo Fujisaki;Soichiro Watanabe;Hiroyuki Satoh
Twenty-five days after the disaster at the Fukushima Daiichi nuclear power plant in 2011, we collected samples of the green macroalgaBryopsis maximafrom the Pacific coast of Japan.Bryopsis maximais a unicellular, multinuclear, siphonous green macroalga. Radiation analysis revealed thatB. maximaemitted remarkably high gamma radiation of131I,134Cs,137Cs, and140Ba as fission products of235U. Interestingly,B. maximacontained naturally occurring radionuclides derived from226Ra and228Ra. Analysis of element content revealed thatB. maximaaccumulates many ocean elements, especially high quantities of the alkaline earth metals Sr (15.9 g per dry-kg) and Ba (3.79 g per dry-kg), whereas Ca content (12.5 g per dry-kg) was lower than that of Sr and only 61 % of the mean content of 70 Japanese seaweed species. Time-course analysis determined the rate of radioactive85Sr incorporation into thalli to be approximately 0.13 g Sr per dry-kg of thallus per day. Subcellular fractionation ofB. maximacells showed that most of the85Sr was localized in the soluble fraction, predominantly in the vacuole or cytosol. Given that85Sr radioactivity was permeable through a dialysis membrane, the85Sr was considered to be a form of inorganic ion and/or bound with a small molecule. Precipitation analysis with sodium sulfate showed that more than 70 % of the Sr did not precipitate as SrSO4, indicating that a proportion of the Sr may bind with small molecules inB. maxima.
登录
查看更多内容
影响因子:
2.8
作者:
Kobayashi;K.;Okouchi;T.;Yamagami;M. and Shinano;T.
通讯作者:
T.
DOI:
--
发表时间:
1998
期刊:
--
影响因子:
--
作者:
C. Dunn
通讯作者:
C. Dunn
DOI:
10.2183/pjab.88.471
发表时间:
2012
期刊:
Proceedings of the Japan Academy. Series B, Physical and biological sciences
影响因子:
--
作者:
Tanaka S
通讯作者:
Tanaka S
影响因子:
2.8
作者:
J. Yamashita;T. Enomoto;M. Yamada;T. Ono;T. Hanafusa;T. Nagamatsu;S. Sonoda;Yoko Yamamoto
通讯作者:
Yoko Yamamoto
DOI:
--
发表时间:
1989
期刊:
Proceedings of the Royal Society of London. B. Biological Sciences
影响因子:
--
作者:
J. Wilcock;C. Perry;Robert J.P. Williams;A. J. Brook
通讯作者:
A. J. Brook