Role of microbial siderophores in biological nitrogen fixation by Rhizobia
3 views | +0 today
Follow
Role of microbial siderophores in biological nitrogen fixation by Rhizobia
Iron (Fe) is the fourth most element in earth's crust (O>SI>Al>Fe), but it is not readily available to plants and microorganisms as it is oxidized and forms an extremely insoluble oxyhydroxide polymeric complex. Microorganisms overcome this problem by secreting special types of low molecular compounds called siderophores (400-1500 Da) that specifically chelate iron with very high affinity. Like the common Psedomonas fluorescence strains, many rhizobia have been found to develop siderophore mediated iron transport system as this element is required as a co-factor which forms part of the Nitrogenase enzyme complex of the Rhizobia involved in biological nitrogen fixation.
No scoops have been published yet. Suggest content to its curator!