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Open AccessFeature PaperReview

Epigenetic Regulation of Auxin Homeostasis

Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
Authors to whom correspondence should be addressed.
Biomolecules 2019, 9(10), 623;
Received: 27 September 2019 / Revised: 15 October 2019 / Accepted: 16 October 2019 / Published: 18 October 2019
(This article belongs to the Special Issue Advances in Molecular Biology of Action of Auxins)
Epigenetic regulation involves a myriad of mechanisms that regulate the expression of loci without altering the DNA sequence. These different mechanisms primarily result in modifications of the chromatin topology or DNA chemical structure that can be heritable or transient as a dynamic response to environmental cues. The phytohormone auxin plays an important role in almost every aspect of plant life via gradient formation. Auxin maxima/minima result from a complex balance of metabolism, transport, and signaling. Although epigenetic regulation of gene expression during development has been known for decades, the specific mechanisms behind the spatiotemporal dynamics of auxin levels in plants are only just being elucidated. In this review, we gather current knowledge on the epigenetic mechanisms regulating the expression of genes for indole-3-acetic acid (IAA) metabolism and transport in Arabidopsis and discuss future perspectives of this emerging field. View Full-Text
Keywords: epigenetics; auxin biosynthesis; auxin transport; auxin homeostasis epigenetics; auxin biosynthesis; auxin transport; auxin homeostasis
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Mateo-Bonmatí, E.; Casanova-Sáez, R.; Ljung, K. Epigenetic Regulation of Auxin Homeostasis. Biomolecules 2019, 9, 623.

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