Siderophores are potent ferric ion chelators produced by microbes like bacteria and fungi during iron stress. The objective of this study was to verify the siderophore-production in noduleforming bacteria and then to compare them with pure cultures of Rhizobium meliloti bacteria. It was achieved by inoculating nodule-forming bacteria in YEM media followed by Chrome Azurol Sulfonate (CAS) assay,...

Intracellular iron homeostasis is critical for survival and proliferation. Lipocalin 24p3 is an iron-trafficking protein that binds iron through association with a bacterial siderophore, such as enterobactin, or a postulated mammalian siderophore. Here, we show that the iron-binding moiety of the 24p3-associated mammalian siderophore is 2,5-dihydroxybenzoic acid (2,5-DHBA), which is similar to ...

ginger (zingiber officinale roscoe) contains the biological properties of the major standard non–volatile pungent compounds of ginger, namely, [6]–, [8]–, and [10]–gingerols, as well as [6]– , [8]–, and [10]–shogaols. so far, the comparative antioxidant potencies among shogaols and gingerols have not been studied in detail and reported. accordingly, this study aimed to examine and compare the a...

Microorganisms produce siderophores to facilitate iron uptake and even though this trait has been extensively studied, there is growing evidence suggesting that siderophores may have other physiological roles aside from iron acquisition. In support of this notion, we previously linked the archetypal siderophore enterobactin with oxidative stress alleviation. To further characterize this associa...

Siderophore-mediated iron acquisition has been well studied in many bacterial pathogens because it contributes to virulence. In contrast, siderophore-mediated iron acquisition by saprophytic bacteria has received relatively little attention. The independent identification of the des and cch gene clusters that direct production of the tris-hydroxamate ferric iron-chelators desferrioxamine E and ...

Endophytic fungi promote plant growth through the production of IAA, siderophore and phosphate solubilization. Out of thirty fungal endophytes isolated from tomato roots grown in a stressed, cold climate of Central Himalayan hills of district Pithoragarh, Uttarakhand, India twelve showed distinct morphological and study was undertaken, to understand the plant growth promoting properties possess...