Iron availability is a key factor for freshwater cyanobacterial survival against saline stress
文献类型：期刊论文
| 作者 | Sun, Yuxuan; Wang, Shang ; Liu, Xiaolei; He, Yongsheng; Wu, Hongjie; Xie, Wei; Li, Nan; Hou, Weiguo; Dong, Hailiang
|
| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2021-03 |
| 卷号 | 194页码:- |
| 关键词 | Synechococcus sp PCC 7942 Salinity stress Stress response Siderophore Iron isotopic compositions |
| ISSN号 | 0013-9351 |
| 英文摘要 | Estuaries are among the most productive ecosystems and dynamic environments on Earth. Varying salinity is the most important challenge for phytoplankton survival in estuaries. In order to investigate the role of iron nutrition on phytoplankton survival under salinity stress, a freshwater cyanobacterial strain was cultivated in media added with different proportions of seawater (measured with siderophore activities), and supplied with gel-immobilized ferrihydrite as iron source. Results showed that the strain grew well in media with 0% seawater supplied with ferrihydrite as iron source. Surprisingly, the biomasses in media with 50% seawater, with more newly excreted siderophore, were similar to those with 0% seawater, but better than those with 6.25%, 12.5% and 25% seawater. Smaller iron isotopic discriminations between the cyanobacterial cells associated iron and dissolved iron were observed in media with 0% and 50% seawater suggested that higher fractions of iron uptake from aqueous dissolved iron reservoir by these comparatively larger biomasses. In summary, this study proved that iron availability plays a key role in cyanobacterial survival under varying salinity stress, and suggested that siderophores introduced by seawater may accelerate iron dissolution, increase iron availability, and make cyanobacterial cells overcome the adverse effects of high-salinity, and indicated that siderophore excretion is a kind of survival strategy for phytoplankton in face of salinity stress. |
| WOS研究方向 | Environmental Sciences ; Public, Environmental & Occupational Health |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46123]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Sun Yat Sen Univ, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China 2.Nanning Normal Univ, Minist Educ, Key Lab Environm Change & Resources Use Beibu Gul, Nan 3.China Univ Geosci, State Key Lab Biogeosci & Environm Geol, Beijing 100083, Peoples R China 4.China Univ Geosci, Inst Earth Sci, Beijing 100083, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, CAS Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 6.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai 519082, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Yuxuan,Wang, Shang,Liu, Xiaolei,et al. Iron availability is a key factor for freshwater cyanobacterial survival against saline stress[J]. ENVIRONMENTAL RESEARCH,2021,194:-. |
| APA | Sun, Yuxuan.,Wang, Shang.,Liu, Xiaolei.,He, Yongsheng.,Wu, Hongjie.,...&Dong, Hailiang.(2021).Iron availability is a key factor for freshwater cyanobacterial survival against saline stress.ENVIRONMENTAL RESEARCH,194,-. |
| MLA | Sun, Yuxuan,et al."Iron availability is a key factor for freshwater cyanobacterial survival against saline stress".ENVIRONMENTAL RESEARCH 194(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。