Biological nitrogen fixation in cereal crops:Progress,strategies,and perspectives  

作　　者：Kaiyan Guo Jun Yang Nan Yu Li Luo Ertao Wang 

机构地区：[1]Shanghai Key Laboratory of Plant Molecular Sciences,College of Life Sciences,Shanghai Normal University,Shanghai 200234,China [2]National Key Laboratory of Plant Molecular Genetics,CAS Center for Excellence in Molecular Plant Sciences,Institute of Plant Physiology and Ecology,Chinese Academy of Sciences,Shanghai 200032,China [3]School of Life Sciences,Shanghai Key Laboratory of Bioenergy Crops,Shanghai University,Shanghai 200444,China

出　　处：《Plant Communications》2023年第2期28-40,共13页植物通讯（英文）

基　　金：supported by the National Natural Science Foundation of China(32070270,32050081,32088102,and 31825003);the Chinese Academy of Sciences Project for Young Scientists in Basic Research(YSBR-011).

摘　　要：Nitrogen is abundant in the atmosphere but is generally the most limiting nutrient for plants.The inability of many crop plants,such as cereals,to directly utilize freely available atmospheric nitrogen gas means that their growth and production often rely heavily on the application of chemical fertilizers,which leads to greenhouse gas emissions and the eutrophication of water.By contrast,legumes gain access to nitrogen through symbiotic association with rhizobia.These bacteria convert nitrogen gas into biologically available ammonia in nodules through a process termed symbiotic biological nitrogen fixation,which plays a decisive role in ecosystem functioning.Engineering cereal crops that can fix nitrogen like legumes or associate with nitrogen-fixing microbiomes could help to avoid the problems caused by the overuse of synthetic nitrogen fertilizer.With the development of synthetic biology,various efforts have been undertaken with the aim of creating so-called‘‘N-self-fertilizing’’crops capable of performing autonomous nitrogen fixation to avoid the need for chemical fertilizers.In this review,we briefly summarize the history and current status of engineering N-self-fertilizing crops.We also propose several potential biotechnological approaches for incorporating biological nitrogen fixation capacity into non-legume plants.

关 键 词：biological nitrogen fixation cereal plants self-fertilizing crops MICROBIOME 

分 类 号：Q94[生物学—植物学]