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. 2022 Nov 4;23(21):13495. doi: 10.3390/ijms232113495

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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The mechanism of light regulation of the activity of mitochondrial citrate synthase in maize by phytochrome B via the decrease in expression of PIF4, causing a change in the adenylate methyl status of the Csy1 gene promoter. Abbreviations: P_rB, phytochrome B form sensitive to red (660 nm) light; P_frB, phytochrome B form sensitive to far-red (730 nm) light; PIF4, phytochrome interacting factor 4; Dam, DNA adenine methylase; Csy1, gene encoding mitochondrial citrate synthase; SAM, S-adenosyl-L-methionine; SAH, S-adenosyl-L-homocysteine; ^6mA, N⁶-methyldeoxyadenine.