Phaseolus vulgaris recognizes Azorhizobium caulinodans Nod factors with a variety of chemical substituents.

Srchi13, a novel early nodulin from Sesbania rostrata, is related to acidic class III chitinases.

On the tropical legume Sesbania rostrata, stem-borne nodules develop after inoculation of adventitious root primordia with the microsymbiont Azorhizobium caulinodans. A cDNA clone, Srchi13, with homology to acidic class III chitinase genes, corresponds to an early nodulin gene with transiently induced expression during nodule ontogeny. Srchi13 transcripts accumulated strongly 2 days after inocu...

Gibberellins are involved in nodulation of Sesbania rostrata.

Upon submergence, Azorhizobium caulinodans infects the semiaquatic legume Sesbania rostrata via the intercellular crack entry process, resulting in lateral root-based nodules. A gene encoding a gibberellin (GA) 20-oxidase, SrGA20ox1, involved in GA biosynthesis, was transiently up-regulated during lateral root base nodulation. Two SrGA20ox1 expression patterns were identified, one related to in...

Identification and characterization of a functional nodD gene in Azorhizobium caulinodans ORS571.

Azorhizobium caulinodans ORS571, a bacterium capable of nodulating roots and stems of the tropical legume Sesbania rostrata, has been shown to have no nodD-like gene located immediately upstream from its common nodABC locus. A clone carrying a functional nodD gene of strain ORS571 has now been isolated from a pLAFR1 gene library by screening for naringenin-induced expression of the common nod g...

Rhizobial factors required for stem nodule maturation and maintenance in Sesbania rostrata-Azorhizobium caulinodans ORS571 symbiosis.

The molecular and physiological mechanisms behind the maturation and maintenance of N(2)-fixing nodules during development of symbiosis between rhizobia and legumes still remain unclear, although the early events of symbiosis are relatively well understood. Azorhizobium caulinodans ORS571 is a microsymbiont of the tropical legume Sesbania rostrata, forming N(2)-fixing nodules not only on the ro...

and M and roots . nodule formation on Sesbania rostrata stems involved in lipopolysaccharide production and An Azorhizobium caulinodans ORS 571 locus