Biotechnology Bulletin ›› 2019, Vol. 35 ›› Issue (10): 1-6.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0585

Previous Articles     Next Articles

Synthetic Biology Research of Plant Nitrogen-fixation Organelle

LUO Li   

  1. School of Life Sciences Shanghai University,Shanghai 200444
  • Received:2019-07-17 Online:2019-10-26 Published:2019-09-30

Abstract: With the rise of synthetic biology,the long-established field of biological nitrogen fixation has ushered in new development opportunities. After the introduction of the principles and techniques of synthetic biology into nitrogen-fixing biology,a new interdisciplinary subject of nitrogen-fixing synthetic biology was born. Symbiotic nitrogen fixation is the most efficient of the three forms of biological nitrogen fixation. In the symbiotic nitrogen-fixing system,the nitrogen-fixing bacteria stably exist in the cytoplasm of the host plant as the organelles,and the relatively stable nitrogen fixation reaction is carried out by using the favorable conditions of micro-oxygen,and sufficient material and energy. However,the limitation of symbiotic nitrogen fixation is host specificity,that is,symbiotic nitrogen-fixing bacteria are difficult to complete infection and nitrogen fixation on most economic crops. Therefore,an important challenge for nitrogen-fixing synthetic biology is how to break through the host specificity of nitrogen-fixing bacteria,and achieve symbiotic or independent nitrogen fixation on main economic crops. In order to solve this difficult problem,domestic and abroad researchers have made fine research progress through hard exploration. This review will give a brief overview of some major advances and issues in the biology of nitrogen-fixing synthesis.

Key words: biological nitrogen fixation, synthetic biology, organelle, nitrogenase, nodulation factors