This increased nutrient (particularly N) demand in turn increases symbiotic N-fixation by Rhizobium present in the
root nodules (Graham and Vance, 2000, Bruning and Rozema, 2013).
This suggests that rhizobia isolates with high mucus production ability have high competitive advantage in the initial infection, colonization, and
root nodules formation.
Glycoconjugate and lipid components of Rhizobium 'hedysari' IS123, a
root nodule symbiont of the stress-tolerant legume, Hedysarium coronarium.
Root nodules, a habitat of nitrogen fixing bacteria, of different plants such as Sesbania concolor (Tingin), Trifolium alexandrinum (Berseem), Iresine herbstii (Laljhari) and Dahlia sp.
Ferdous, "Isolation and selection of Bradyrhizobium from the
root nodules of indigo plants (Indigofera tinctoria L.)," African Journal of Biotechnology, vol.
Hong, "Biogenesis of the peribacteroid membrane in
root nodules," Trends in Microbiology, vol.
As a member of the legume family, its
root nodules have nitrogen-fixing capacity so don't go heavy on nitrogen feeds - this will just lead to too much vigorous sappy green growth.
Nitrogen-fixing rhizobia, living as endosymbionts in
root nodules of legume host plants, have a high demand for iron because a number of "symbiotic" proteins contain iron or heme [75].
During the study, the highest number of
root nodules (89 plant-1) at 50 % flowering stage were recorded in M.
Being leguminous crops possessing
root nodules, they fix atmospheric nitrogen and thus add up to thirty kg of N per hectare to the soil.