Chapter 12 Role of Iron in Plant–Microbe Interactions

摘要: Iron is an essential micronutrient for plants and associated microorganisms. nutrition of these organisms relies on the soil supply. However, bioavailability iron in cultivated soils low. Plants microorganisms have thus evolved active strategies uptake based acidification, chelation, and/or reduction processes. acquisition by leads to complex interactions ranging from mutualism competition. In rhizosphere, support abundant microbial communities through release rhizodeposits. host plant decrease even more concentration solution. Therefore, there intense competition among rhizosphere microorganisms, favoring those with most efficient strategy. This case fluorescent Pseudomonas bacteria that synthesize siderophores, called pyoverdines or pseudobactines, which a high affinity suppress fungal phytopathogens deleterious Pyoverdines also elicit defense reactions contribute acquisition. Taken together, mutual effects promote growth health. may occur between microbes during pathogenesis. Siderophores virulence pathogens; conversely, activate mechanisms aimed at depriving pathogens nutritional iron. The iron-withholding rely controlling its homeostasis. this chapter, we describe resulting them, challenges represented their monitoring agroecology.