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;

BNF in sugarcane has been studied systematically in Brazil to date, more than a hundred of endophytic nitrogen-fixing bacteria has been isolated, but not been classified yet.