▪ Abstract Infection of legume roots or stems with soil bacteria of the Rhizobiaceae results in
the formation of nodules that become symbiotic nitrogen-fixing organs. Within the infected …

Bacteria are the most remarkable organisms in the biosphere, surviving and growing in
environments that support no other life forms. Underlying this ability is a flexible metabolism …

Cytochrome oxidase is a key enzyme in aerobic metabolism. All the recorded eubacterial
(domain Bacteria) and archaebacterial (Archaea) sequences of subunits 1 and 2 of this …

We report the discovery of a Bradyrhizobium japonicum gene cluster (fixNOQP) in which
mutations resulted in defective soybean root-nodule bacteroid development and symbiotic …

DEAE‐cellulose chromatography of extracts of free‐living Rhizobium meliloti cells revealed
separate NAD+‐dependent and NADP+‐dependent malic enzyme activities. The NAD+ …

Rhizobia fix nitrogen in a symbiotic association with leguminous plants and this occurs in
nodules. A low-oxygen environment is needed for nitrogen fixation, which paradoxically has …

Publisher Summary This chapter emphasizes on what may be called the “organization of
metabolism.” Legume nodules include two different sets of genes and two different sets of …

Abstract Long-term (14 days) carbon costs of N 2 fixation were studied in pot trials. For this
purpose the CO 2 release from the root space of nodulated and non-nodulated (urea …

Rhizobia are gram-negative bacteria with two distinct habitats: the soil rhizosphere in which
they have a saprophytic and, usually, aerobic life and a plant ecological niche, the legume …

Pseudomonas-like organisms form a highly heterogeneous and ubiquitous group of
bacteria. Recent identification of an authentic Pseudomonas genus should help to decrease …