Epigenetic regulation: another layer in plant nutrition

Séré, David; Martin, Antoine

doi:10.1080/15592324.2019.1686236

Cited by 22 publications

(15 citation statements)

References 54 publications

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“…At the molecular level, plants respond to nutritional status by modulating gene expression at multiple levels through a network of transcription factors and via post-translational regulation. Multiple studies have also revealed that changes in chromatin state by histone modification or DNA methylation play important roles in nutrient homeostasis in plants (Secco et al, 2017;Séré and Martin, 2020).…”

Section: Introductionmentioning

confidence: 99%

Minireview: Chromatin-based regulation of iron homeostasis in plants

Yao

et al. 2022

Front. Plant Sci.

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Plants utilize delicate mechanisms to effectively respond to changes in the availability of nutrients such as iron. The responses to iron status involve controlling gene expression at multiple levels. The regulation of iron deficiency response by a network of transcriptional regulators has been extensively studied and recent research has shed light on post-translational control of iron homeostasis. Although not as considerably investigated, an increasing number of studies suggest that histone modification and DNA methylation play critical roles during iron deficiency and contribute to fine-tuning iron homeostasis in plants. This review will focus on the current understanding of chromatin-based regulation on iron homeostasis in plants highlighting recent studies in Arabidopsis and rice. Understanding iron homeostasis in plants is vital, as it is not only relevant to fundamental biological questions, but also to agriculture, biofortification, and human health. A comprehensive overview of the effect and mechanism of chromatin-based regulation in response to iron status will ultimately provide critical insights in elucidating the complexities of iron homeostasis and contribute to improving iron nutrition in plants.

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Section: Introductionmentioning

confidence: 99%

Minireview: Chromatin-based regulation of iron homeostasis in plants

Yao

et al. 2022

Front. Plant Sci.

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“…Histone methylation is a repressive mark placed by the Polycomb Repressive Complex 2 (PRC2). The histone methylation pattern is altered under Fe excess in roots; the repressive marks arginine dimethylation H4Arg3me2 and lysine trimethylation H3Lys27me3 induced the suppression of the Fe acquisition system ( Séré and Martin, 2020 ). In the shoot, under conditions of Fe excess, PRC2 targets YSL1 and IRON MAN1 , both of which are involved in long-distance Fe signalling ( Kumar et al , 2017 ; Grillet et al , 2018 ).…”

Section: Information On the Intracellular Iron Status In Leavesmentioning

confidence: 99%

Iron in leaves: chemical forms, signalling, and in-cell distribution

Sági-Kazár

Solymosi

Solti

2022

Journal of Experimental Botany

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Iron (Fe) is an essential transition metal. Based on its redox active nature under biological conditions various Fe compounds serve as cofactor in redox enzymes. In plants, the photosynthetic machinery has the highest demand for Fe. In consequence, the delivery and incorporation of Fe into cofactors of the photosynthetic apparatus is in the focus of the Fe metabolism of leaves. Disturbance of foliar Fe homeostasis leads to impaired biosynthesis of chlorophylls and composition of the photosynthetic machinery. Nevertheless, mitochondrial function also has a significant demand for Fe. The proper incorporation of Fe to proteins and cofactors as well as a balanced intracellular Fe status in leaf cells require the ability to sense Fe but may also rely on indirect signals that report on the physiological processes connected to Fe homeostasis. Although multiple pieces of information were gained on the Fe signalling of roots, regulation of the Fe status in leaves has not yet been clarified in detail. In this review, we give an overview on the current knowledge on the foliar Fe homeostasis from the chemical forms to the allocation and sensing of Fe in leaves.

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“…Recent studies have highlighted the importance of epigenetic regulation in modulating nitrogen metabolism and the plant response to nutrient availability (Sere and Martin, 2020). SET DOMAIN GROUP 8 (SDG8) regulates the N assimilation and lateral root response by regulating H3K36me3 level in response to changing N levels in Arabidopsis (Li et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Epigenetic modifications mediate cultivar-specific root development and metabolic adaptation to nitrogen availability in wheat

Zhang

Cui

Zhao

et al. 2023

Preprint

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The breeding of crops with improved nitrogen use efficiency (NUE) is crucial for sustainable agriculture. However, the role of epigenetic modification in the regulation of cultivar-specific responses to low nitrogen (LN) constraint is not well understood. Here, we analyzed the chromatin landscapes in roots, leaves, and seeds in two wheat cultivars (KN9204 and J411) that differ radically in NUE under normal and nitrogen-limited conditions. Transcriptional regulatory chromatin regions exhibited a clear cultivar-specificity between KN9204 and J411. Cultivar-specific regulation of nitrogen metabolism genes (NMGs) is linked to variation in histone modification levels, rather than differences in DNA sequence. Cultivar-specific histone modification regions were found to contribute to the genetic regulation of NUE-related traits, such as QTL locus of maximum root length of qMRL-7B. Furthermore, LN-induced H3K27ac and H3K27me3 dynamics enhanced root growth more in KN9204, while strengthened the nitrogen uptake system more in J411. Evidence from histone deacetylase inhibitor treatment and transgenic plants with loss-of-function of the H3K27me3 methyltransferase further showed that changes in epigenetic modifications can alter the strategy for root development and nitrogen uptake in response to LN constraint. Taken together, the results of our study highlight the importance of epigenetic regulation in mediating cultivar-specific root development and metabolic adaptation to LN in wheat.

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Epigenetic regulation: another layer in plant nutrition

Cited by 22 publications

References 54 publications

Minireview: Chromatin-based regulation of iron homeostasis in plants

Minireview: Chromatin-based regulation of iron homeostasis in plants

Iron in leaves: chemical forms, signalling, and in-cell distribution

Epigenetic modifications mediate cultivar-specific root development and metabolic adaptation to nitrogen availability in wheat

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