应用生态学报2017，Vol.28Issue(10)：3440-3450,11.DOI:10.13287/j.1001-9332.201710.035
非共生生物固氮微生物分子生态学研究进展
Research advance on molecular ecology of asymbiotic nitrogen fixation microbes
摘要
Abstract
Nitrogen is the main limiting factor in the productivity of ecological system,and biological nitrogen fixation is the main nitrogen source in the natural ecosystem.Biological nitrogen fixation includes 3 types:symbiotic,associate and free-living nitrogen fixation.Associate and free-living nitrogen fixations are collectively called asymbiotic nitrogen fixation.Compared with symbiotic system,asymbiotic nitrogen fixation rate is lower,but asymbiotic nitrogen fixation microorganisms can survive and fix nitrogen without forming symbiotic structure with plants,therefore play an important role in nitrogen cycling,especially nitrogen input in ecosystems,due to their wide distribution and high adaptability to different environments.In this review,we mainly introduced the research progress of asymbiotic nitrogen fixation microorganisms in terms of diversity,distribution characteristics,the factors influencing asymbiotic nitrogen fixation efficiencies in soils and phyllosphere,and also highlighted the existing problems and future perspectives in this research field.关键词
联合固氮菌/自生固氮菌/土壤/叶际Key words
associate nitrogen-fixing bacteria/free-living nitrogen-fixing bacteria/soil/phyllosphere引用本文复制引用
徐鹏霞,韩丽丽,贺纪正,罗锋,张丽梅..非共生生物固氮微生物分子生态学研究进展[J].应用生态学报,2017,28(10):3440-3450,11.基金项目
本文由中国科学院战略先导专项B(XDB15020200)和国家自然科学基金项目(41322007)资助 This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences B (XDB15020200) and the National Natural Science Fundation of China (41322007). （XDB15020200）
