
TY  - JOUR
A1  - Kloos, Karin 
A1  - Mergel, Alexander 
A1  - Rösch, Christopher 
A1  - Bothe, Hermann 
T1  - Denitrification within the genus <emph type="2">Azospirillum</emph> and other associative bacteria
JF  - Functional Plant Biology
JO  - Functional Plant Biol.
Y1  - 2001
VL  - 28
IS  - 9
SP  - 991
EP  - 998
KW  - associative bacteria, Azospirillum, denitrification, dinitrogen fixation, plant&#8211;bacteria associations, plant growth promoting bacteria.
UR  - https://doi.org/10.1071/PP01071 
N2  - This paper originates from an address at the 8th International Symposium on Nitrogen Fixation with Non-Legumes, Sydney, NSW, December 2000 Different Azospirillumstrains and some other plant growth-promoting rhizobacteria (PGPR) were screened for the occurrence of genes coding for denitrification and nitrogenase reductase (nifH) using polymerase chain reaction (PCR)-based techniques. All PGPR examined were nitrogenase-positive. Azospirillum strains were remarkably dissimilar with respect to denitrification capabilities, in particular with respect to genes of the dissimilatory nitrite reductase. A. brasilense, A. lipoferum and A. halopraeferens strains possess a cytochrome cd1-containing nitrite reductase with low sequence similarities among them. A. irakense and A. doebereinerae have a Cu-containing nitrite reductase and A. amazonense is unable to denitrify. The molecular data were corroborated by activity measurements. The current results indicate that the inability to perform denitrification is unlikely a selective advantage for Azospirillum spp. and other associative bacteria for forming an association with plant roots. 
ER  -

