Idyli Elissavet Charatsidou

Ms. Idyli Elissavet Charatsidou


Research Focus & Metrics

Academic Career Length

1Year (2026-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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YVYannis Ventouris
Yannis Ventouris
ICIdyli Elissavet Charatsidou
Idyli Elissavet Charatsidou
KIKimon Ionas
Kimon Ionas
GSGeorgios P. Stylianidis
Georgios P. Stylianidis
CPChrysoula K. Pantazopoulou
Chrysoula K. Pantazopoulou
Styliani ChorianopoulouStyliani Chorianopoulou
Styliani Chorianopoulou
Iron (Fe) is an essential micronutrient for plant development and productivity. Nevertheless, the role of gibberellins (GAs) in the control of iron homeostasis is less studied compared to other growth regulators. We found that GAs modulate iron homeostasis in maize by inducing deficiency-like responses independent of rhizosphere iron availability. Plant phenotyping demonstrated that exogenous GA3 application under iron-sufficient conditions phenocopied iron deprivation, while inhibiting GA biosynthesis with mepiquat chloride prevented the development of typical symptoms of Fe deficiency (–Fe). Gibberellins positively control strategy II Fe uptake genes, albeit indirectly, as opposed to the direct negative transcriptional regulation of phytosiderophore biosynthesis. Additionally, gibberellins disrupt iron partitioning by suppressing root-to-shoot Fe translocation, causing iron overaccumulation in roots of GA3 treated plants. A functional ferrous iron uptake pathway was identified and was found to operate in conjunction with the strategy II uptake pathway via the differentially regulated Zea mays Iron-Regulated Transporter (IRT) paralogs ZmIRT1 and ZmIRT2. Root responses are spatially organized: gene expression in the lateral root sector reflects the shoot iron status, while transcriptional responses in the root apex correlate with local Fe demands. This study demonstrates that maize leverages a hybrid ferric/ferrous iron uptake strategy and establishes novel roles of GAs as pivotal regulators of iron homeostasis.