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Glutathione Transferases are Involved in Salicylic Acid-Induced Transcriptional Reprogramming

Horváth, Edit and Bela, Krisztina and Kulman, Kitti and Faragó, Nóra and Riyazuddin, Riyazuddin and Gallé, Ágnes and Puskás, László and Csiszár, Jolán (2023) Glutathione Transferases are Involved in Salicylic Acid-Induced Transcriptional Reprogramming. JOURNAL OF PLANT GROWTH REGULATION, 42 (7). pp. 4497-4510. ISSN 0721-7595

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Abstract

Salicylic acid (SA) plays a crucial role not only in defence against pathogen attacks, but also in abiotic stress responses. Recently, some key steps of SA signalling outlined the importance of redox state-dependent processes. This study explores the role of glutathione transferases (GSTs) in the transcriptional reprogramming of redox status-related genes in seven-day-old wild type and Atgst mutant Arabidopsis thaliana plants. The timing of redox changes, detected by the redox-sensitive green fluorescent protein (roGFP2), differed in wild type roots treated with 10 μM or 100 μM SA. Our results verified how the applied SA concentrations had different effect on the expression of oxidative stress- and redox-related genes, among them on the expression of AtGSTF8 and AtGSTU19 genes. Lower vitality and less negative E GSH values were specific characteristics of the Atgst mutants compared to the wild type plants throughout the experiment. Changes in the redox potential were only modest in the mutants after SA treatments. A slightly modified gene expression pattern was observed in control conditions and after 1 h of SA treatments in Atgst mutants compared to Col-0 roots. These data originating from the whole roots provide indirect evidence for the role of the investigated AtGSTF8 and AtGSTU19 isoenzymes in the transduction of the redox signal. Our results demonstrate that the investigated Arabidopsis GSTs have a role in maintaining the levels of reactive oxygen species- and redox homeostasis and are involved in transcriptional reprogramming in the roots.

Item Type: Article
Additional Information: Funding Agency and Grant Number: University of Szeged; Hungarian National Research, Development and Innovation Office [NKFIH K 125265, PD 131884, PD 131909]; University of Szeged Open Access Fund [5796] Funding text: Open access funding provided by University of Szeged. This study was supported by the Hungarian National Research, Development and Innovation Office [Grant Numbers: NKFIH K 125265, PD 131884, and PD 131909]. OA was supported by the University of Szeged Open Access Fund, Grant Number: 5796.
Uncontrolled Keywords: Arabidopsis thaliana, Gene expression, Glutathione transferase, Reactive oxygen species, Redox state, Salicylic acid
Subjects: Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3015 Molecular biology / molekuláris biológia
Q Science / természettudomány > QK Botany / növénytan
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 25 Sep 2023 12:20
Last Modified: 25 Sep 2023 12:20
URI: http://real.mtak.hu/id/eprint/174831

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