Mechanisms to regulate iron homeostasis are very likely billions of years older than those for
oxygen homeostasis since contemporary microbes regulate iron in the absence of oxygen …

Symbiotic nitrogen fixation carried out by the interaction between legumes and rhizobia is
the main source of nitrogen in natural ecosystems and in sustainable agriculture. For the …

Plants secrete both high-and low-molecular weight compounds from their roots, and these
root exudates function not only as nutrients for soil microbes but as signal molecules in plant …

Iron deficiency is an important soybean [Glycine max (L.) Merr.] nutrient deficiency that is
easily identified by interveinal chlorosis of the leaves and reduced plant growth, both of …

Iron is critical for bacterial growth, but problems arise from the toxicity of excess iron; thus,
iron uptake is subject to tight control. The most widely found and best-studied iron …

Rhizobium BICC 651, a fast-growing strain isolated from root nodule of chickpea (Cicer
arietinum L.), produced a catechol siderophore to acquire iron under iron poor condition. A …

Many elements are scarcely soluble in aqueous conditions found in high pH environments,
such as calcareous grassland soils, unless complexed to strong binding organic ligands. To …

The bacterium Bradyrhizobium japonicum USDA110 does not synthesize siderophores for
iron utilization in aerobic environments, and the mechanism of iron uptake within symbiotic …

Siderophores are ferric specific ligands that are involved in receptor specific iron transport
into bacteria. Partially purified siderophores from 37 different rhizospheric bacterial isolates …

Under field conditions, inoculated rhizobial strains are at a survival disadvantage as
compared to indigenous strains. In order to out‐compete native rhizobia it is not only …