Plant growth-promoting rhizobacteria (PGPR) are a group of free-living bacteria that
colonize the rhizosphere and benefit the root growth. Bacteria of diverse genera were …

FhuA, the receptor for ferrichrome-iron in Escherichia coli, is a member of a family of integral
outer membrane proteins, which, together with the energy-transducing protein TonB …

Soilborne root diseases caused by plant pathogenic Pythium species cause serious losses
in a number of agricultural production systems, which has led to a considerable effort …

Poor iron (F e) availability in soil represents one of the most important limiting factors of
agricultural production and is closely linked to physical, chemical and biological processes …

A colony morphology type is described in which cells of Salmonella typhimurium form a rigid
multicellular network with expression of thin aggregative fimbriae that mediate tight …

The availability of nitrogen is important in regulating biological productivity in marine
environments. Deepwater nitrate has long been considered the major source of new …

Organisms generally respond to iron deficiency by increasing their capacity to take up iron
and by consuming intracellular iron stores. Escherichia coli, in which iron metabolism is …

Iron is an essential nutrient for nearly all organisms but presents problems of toxicity, poor
solubility and low availability. These problems are alleviated through the use of iron-storage …

Legumes, which develop a symbiosis with nitrogen-fixing bacteria, have an increased
demand for iron. Iron is required for the synthesis of iron-containing proteins in the host …

A review of information, as well as new research results related to low molecular weight
metal chelators isolated from wood decay fungi is presented. Low molecular weight …