Correction: BRUTUS at the crossroad of iron uptake and nodulation
Chandan Kumar Gautam, Barney A. Geddes
Abstract
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
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Taxonomy
TopicsPlant Micronutrient Interactions and Effects · Legume Nitrogen Fixing Symbiosis · Metalloenzymes and iron-sulfur proteins
Correction: Plant Cell Reports 10.1007/s00299-025-03584-w
A portion of caption of figure 1 was inadvertently placed as main text before conclusion part.
The complete correct Fig. 1 and caption are given below.Fig. 1. Mode of action of BTS during nodulation under optimal and iron-deficient conditions. Under optimal iron (Fe) conditions in soybean, BRUTUS (BTS) binds Fe and becomes stabilized, which in turn facilitates the monoubiquitination and stabilization of NODULATION SIGNALING PATHWAY1 (NSP1). Stabilized NSP1 regulates the expression of NODULE INCEPTION (NIN), a key nodulation regulator whose expression is Fe-dose-dependent and aligns with optimal nodule formation. In contrast, under Fe-deficient conditions, BTS becomes destabilized and is degraded, leading to the degradation of NSP1 and subsequent disruption of downstream nodulation pathways. In another legume, L. japonicus, LjNIN regulates the expression of (IRONMAN, IMA) LjIMA, which is upregulated under low Fe and high nitrogen (N) conditions. This regulatory relationship makes the potential interaction between IMA and BTS in legumes uncertain, as IMA, which would typically compete with bHLH TFs during Fe deficiency, is itself regulated by NIN. In the accompanying figure, solid lines represent established pathways, and degradation is represented by a dotted box outline. Ub represents ubiquitination; N, nitrogen; and Fe, iron. Image was created using BioRender
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