The cyanobacterial nitrogen fixation paradox in natural waters
作者: Hans Paerl
作者单位: 1Institute of Marine Sciences, University of North Carolina at Chapel Hill, Morehead City, NC, USA
刊名: F1000Research, 2017, Vol.6
来源数据库: F1000 Research Ltd
DOI: 10.12688/f1000research.10603.1
关键词: cyanobacterianitrogen fixationfreshwatermarine
原始语种摘要: Nitrogen fixation, the enzymatic conversion of atmospheric N (N2) to ammonia (NH3), is a microbially mediated process by which “new” N is supplied to N-deficient water bodies. Certain bloom-forming cyanobacterial species are capable of conducting N2 fixation; hence, they are able to circumvent N limitation in these waters. However, this anaerobic process is highly sensitive to oxygen, and since cyanobacteria produce oxygen in photosynthesis, they are faced with a paradoxical situation, where one critically important (for supporting growth) biochemical process is inhibited by another. N2-fixing cyanobacterial taxa have developed an array of biochemical, morphological, and ecological adaptations to minimize the “oxygen problem”; however, none of...
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关键词翻译
关键词翻译
  • nitrogen 
  • oxygen 
  • anaerobic 嫌气的
  • ammonia 
  • phosphorus 
  • fixation 固定
  • waters 水域
  • limitation 局限性
  • natural 自然的
  • atmospheric 大气的