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Iron uptake, translocation, and regulation in higher plants.
TLDR
Key molecular components-including transporters, enzymes, and chelators-have been clarified for both strategies of reduction and chelation, and many of these components are now thought to also function inside the plant to facilitate internal iron transport.
Rice plants take up iron as an Fe3+-phytosiderophore and as Fe2+.
TLDR
Analysis using the positron-emitting tracer imaging system showed that rice plants are able to take up both an Fe3+-phytosiderophore and Fe2+, indicating that rice possesses a novel Fe-uptake system that directly absorbs the Fe2+, a strategy that is advantageous for growth in submerged conditions.
KORRIGAN, an Arabidopsis Endo-1,4-β-Glucanase, Localizes to the Cell Plate by Polarized Targeting and Is Essential for Cytokinesis
TLDR
The results suggest that Kor1 plays a critical role during cytokinesis, and substitution mutations in the polarized targeting motifs of KOR1 caused the fusion proteins to localize to the plasma membrane as well.
OsYSL2 is a rice metal-nicotianamine transporter that is regulated by iron and expressed in the phloem.
TLDR
Results suggest that OsYSL2 is a rice metal-NA transporter that is responsible for the phloem transport of iron and manganese, including the translocation of Iron andManganese into the grain.
OsZIP4, a novel zinc-regulated zinc transporter in rice.
TLDR
OsZIP4 complemented a Zn-uptake-deficient yeast (Saccharomyces cerevisiae) mutant, DeltazRT1,Deltazrt2, indicating that OsZIP 4 is a functional transporter of Zn.
Rice OsYSL15 Is an Iron-regulated Iron(III)-Deoxymugineic Acid Transporter Expressed in the Roots and Is Essential for Iron Uptake in Early Growth of the Seedlings*
TLDR
Results strongly suggest that OsYSL15 is the dominant iron(III)-deoxymugineic acid transporter responsible for iron uptake from the rhizosphere and is also responsible for phloem transport of iron.
Rice metal-nicotianamine transporter, OsYSL2, is required for the long-distance transport of iron and manganese.
TLDR
Results indicate that the altered expression of OsYSL2 changes the localization of Fe, and that OsY SL2 is a critical Fe-nicotianamine transporter important for Fe translocation, especially in the shoots and endosperm.
The rice bHLH protein OsIRO2 is an essential regulator of the genes involved in Fe uptake under Fe-deficient conditions.
TLDR
This work characterized the Fe-deficiency-inducible basic helix-loop-helix transcription factor OsIRO2 in rice and proposed a novel gene regulation network for Fe- deficiency responses, including Osiro2, IDEs and the two transcription factors.
GAMYB controls different sets of genes and is differentially regulated by microRNA in aleurone cells and anthers.
TLDR
The involvement of a microRNA, miR159, in the regulation of GAMYB expression in cereal aleurone cells and flower development and a microarray analysis revealed that OsGAMYB and its upstream regulator SLR1 are involved in theregulation of almost all GA-mediated gene expression in rice aleur one cells.
Role of nicotianamine in the intracellular delivery of metals and plant reproductive development.
TLDR
Results suggest that a shortage of NA impaired the functions of metal-requiring proteins, including transcription factors, and may be involved in the regulation of metal transfer within the cells.
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