...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Hydroxamate Siderophores: Occurrence And Importance In The Atlantic Ocean
【24h】

Hydroxamate Siderophores: Occurrence And Importance In The Atlantic Ocean

机译：异羟肟酸酯铁载体：在大西洋中的发生和重要性。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Siderophores are chelates produced by bacteria as part of a highly specific iron uptake mechanism. They are thought to be important in the bacterial acquisition of iron in seawater and to influence iron biogeochemistry in the ocean. We have identified and quantified two types of siderophores in seawater samples collected from the Atlantic Ocean. These siderophores were identified as hydroxamate siderophores, both ferrioxamine species representative of the more soluble marine siderophores characterized to date. Ferrioxamine G was widely distributed in surface waters throughout the Atlantic Ocean, while ferrioxamine E had a more varied distribution. Total concentrations of the two siderophores were between 3 and 20 pM in the euphotic zone. If these compounds are fully complexed in seawater, they represent approximately 0.2-4.6% of the <0.2 μm iron pool. Our data confirm that siderophore-mediated iron acquisition is important for marine heterotrophic bacteria and indicate that siderophores play an important role in the oceanic biogeochemical cycling of iron.
机译：铁载体是细菌产生的螯合物，是高度特异性铁吸收机制的一部分。人们认为它们在细菌吸收海水中的铁中起重要作用，并影响海洋中铁的生物地球化学。我们已经确定并量化了从大西洋采集的海水样品中的两种铁载体。这些铁载体被鉴定为异羟肟酸酯铁载体，这两种亚铁氧胺都代表了迄今表征的更易溶解的海洋铁载体。铁氧胺G广泛分布在整个大西洋的地表水域中，而铁氧胺E的分布更为广泛。在富营养区，两种铁载体的总浓度在3至20 pM之间。如果这些化合物在海水中完全络合，它们约占<0.2μm铁矿池的0.2-4.6％。我们的数据证实，铁载体介导的铁获取对于海洋异养细菌很重要，并表明铁载体在铁的海洋生物地球化学循环中起着重要作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号