It is now well accepted that nitrogen-fixing bacteria colonising graminaceous plants can be
grouped into three categories: 1, rhizosphere organisms; 2, facultative endophytes and 3 …

In an agroecosystem, industrially produced nitrogenous fertilizers are the principal sources
of nitrogen for plant growth; unfortunately these also serve as the leading sources of …

Background and aim Nitrogen-fixing bacteria or diazotrophs have been isolated for many
years using different formulations of N-free semi-solid media. However, the strategies used …

Background Nitrogen is an essential nutrient in plant growth. The ability of a plant to supply
all or part of its requirements from biological nitrogen fixation (BNF) thanks to interactions …

Azospirillum represents the best characterized genus of plant growth-promoting
rhizobacteria. Other free-living diazotrophs repeatedly detected in association with plant …

Nitrogen-fixing bacteria are able to enter into roots from the rhizosphere, particularly at the
base of emerging lateral roots, between epidermal cells and through root hairs. In the …

Some beneficial plant-interacting bacteria can biologically fix N2 to plant-available
ammonium. Biological nitrogen fixation (BNF) is an important source of nitrogen (N) input in …

The recent discovery of obligate endophytic diazotrophs, like Acetobacter diazotrophicus,
Herbaspirillum seropedicae and H. rubrisubalbicans colonizing sugar cane roots, stems and …

The potential of nitrogen-fixing (NF) bacteria to form a symbiotic relationship with
leguminous plants and fix atmospheric nitrogen has been exploited in the field to meet the …

The first observations indicating interactions, later called rhizosphere associations, of
diazotrophs with non-leguminous plants were those of a selective enrichment of Beijerinckia …