Journal
PLANTS-BASEL
Volume 12, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/plants12101958
Keywords
iron; plant symbiosis; iron uptake; iron homeostasis; rhizobium; mycorrhiza
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Iron is essential for organisms, and plants and microorganisms have developed mechanisms for iron uptake, transport, and storage. Maintaining iron homeostasis in symbiotic systems is a challenge. This review discusses progress on iron uptake and transport in nodules, iron homeostasis in rhizobia-legume symbiosis, iron uptake in AM fungi, regulation in AM plants, and interactions with other nutrients during AM symbiosis. Future prospects in this research area are also proposed.
Iron is an essential element for most organisms. Both plants and microorganisms have developed different mechanisms for iron uptake, transport and storage. In the symbiosis systems, such as rhizobia-legume symbiosis and arbuscular mycorrhizal (AM) symbiosis, maintaining iron homeostasis to meet the requirements for the interaction between the host plants and the symbiotic microbes is a new challenge. This intriguing topic has drawn the attention of many botanists and microbiologists, and many discoveries have been achieved so far. In this review, we discuss the current progress on iron uptake and transport in the nodules and iron homeostasis in rhizobia-legume symbiosis. The discoveries with regard to iron uptake in AM fungi, iron uptake regulation in AM plants and interactions between iron and other nutrient elements during AM symbiosis are also summarized. At the end of this review, we propose prospects for future studies in this fascinating research area.
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