Effects of root-associated N2-fixing cyanobacteria on the growth and nitrogen content of wheat (Triticum vulgare L.) seedlings Article

Obreht, Z, Kerby, NW, Gantar, M et al. (1993). Effects of root-associated N2-fixing cyanobacteria on the growth and nitrogen content of wheat (Triticum vulgare L.) seedlings . Biology and Fertility of Soils, 15(1), 68-72. 10.1007/BF00336292

cited authors

  • Obreht, Z; Kerby, NW; Gantar, M; Rowell, P

abstract

  • Following co-cultivation of wheat with N2-fixing cyanobacterial isolates capable of forming associations, Nostoc 2S6B, 2S9B or Anabaena C5, for 15 days in the presence or absence of combined N a large stimulation of root length was observed without any increase in root dry weight. Increases in the N concentrations of both roots and shoots occurred following co-cultivation with most cyanobacteria tested. The increase in plant N concentrations appeared to be dependent on the wheat cultivar and the cyanobacterial isolate used. Nostoc isolates had similar nitrogenase activities when associated with roots and when grown in shake-flask cultures. The nitrogenase activity of roots colonized by Anabaena C5 or Nostoc 2S6B was higher following removal of loosely associated cyanobacteria. © 1993 Springer-Verlag.

authors

publication date

  • January 1, 1993

published in

Digital Object Identifier (DOI)

start page

  • 68

end page

  • 72

volume

  • 15

issue

  • 1