53 free-living Dizotrophs isolated from soils at different altitude in Liusha river valley were analyzed by phenotypic features and BOX-PCR fingerprinting procedure.

This presentation mainly introduces the advances of proteomics in BNF research, such as free-living diazotrophs, Rhizobium and its nitrogen-fixing nodules on legume roots etc in order to be beneficial to apply the powerful tool in BNF of China, and to p.

Field experiments were conducted in Dingxi,in the western Loess Plateau,on the effects of tillage on soil ammonifying bacteria,nitrobacteria and nitrogen-fixing bacteria under a rotation system with spring wheat and pea.

The gama-aminobutyric acid production ability of sixty-four endophytic diazotrophs from Gramineae were tested by paper chromatography and ultraviolet spectrophotometer.

Forty strains belonged to the endophytic diazotrophs were identified by using acetylene reduction activity (ARA) assay.

Endophytic diazotrophs is the microorganisms colonizing and fixing nitrogen within plants.

Five endophytic diazotrophs with high and stable nitrogenase activity screened from Guangdong bamboo(Bambusa blumeana J.

Pot trails and field experiments were conducted to study the effects of two endophytic diazotroph inoculated on rice.

Biodiversity, biological, physiological properties, mutual action with host plant, and application prospect of endophytic diazotroph and other aspects were summarized in this paper.

Isolation of endophytic diazotrophic bacteria from several gramineae grasses and determination of their nitrogenase activity;