Geochemical and Microbiological Analysis of Sambe Hot Springs, Shimane Prefecture, Japan
Geochemical and Microbiological Analysis of Sambe Hot Springs, Shimane Prefecture, Japan
复制标题
DOI：
10.1111/rge.12002
复制
发表时间：
2013-04
期刊：
影响因子：
1.4
通讯作者：
K. Sasaki;Yoshitaka Uejima;A. Sakamoto;Qianqian Yu;J. Ishibashi;N. Okibe;T. Hirajima
中科院分区：
文献类型：
--
作者：
K. Sasaki;Yoshitaka Uejima;A. Sakamoto;Qianqian Yu;J. Ishibashi;N. Okibe;T. Hirajima
结合水化学、沉积物特征和微生物群落结构研究了岛根三贝温泉锰矿床形成的微生物作用。基于从锰氧化富集培养物中提取的DNA的细菌和真菌群落结构分析表明与恶臭假单胞菌、茎点霉属和黄瓜暗球腔菌（Plectosphaerella cucumerina）（所有锰氧化微生物）密切匹配。这些沉积物结晶不良，在中性pH值下形成，这是生物沉淀物的特征。EPMA结果表明，在结晶良好的Mn氧化物颗粒中Mn和Ba含量之间呈正相关。观察到大量的Ba含量内锰氧化物颗粒。这些结果表明，沉积物中的Ba含量不仅受到水溶液中Ba 2+浓度的影响，而且还受到生物水钠锰矿结晶度的影响。钡在生物矿化过程中会被掺入水钠锰矿中。
Microbiological contribution to the formation of the manganese deposits in Sambe hot springs, Shimane, was investigated in combination with water chemistry, characterization of sediments and microbial community structure. Analysis of bacterial and fungal community structure based on DNA extracted from a Mn‐oxidizing enrichment culture indicated close matches with Pseudomonas putida, Phoma sp. and Plectosphaerella cucumerina, all Mn‐oxidizing microorganisms. These sediments were poorly crystalline and formed at neutral pH values, which is characteristic of biogenic precipitates. The EPMA results demonstrated a positive correlation between Mn and Ba contents in well‐crystalline Mn oxide grains. Substantial Ba contents were observed inside Mn oxide grains. These findings indicated that Ba contents in sediments are influenced by not only aqueous Ba2+ concentrations but also crystallinity of biogenic birnessite. Barium would be incorporated in birnessite during biomineralization.