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Article

Master Regulatory Transcription Factors in β-Aminobutyric Acid-Induced Resistance (BABA-IR): A Perspective on Phytohormone Biosynthesis and Signaling in Arabidopsis thaliana and Hordeum vulgare

1
Research Institute for Medicinal Plants and Herbs Ltd., 2011 Budakalász, Hungary
2
Institute of One Health, Faculty of Health Science, University of Debrecen, Egyetem Tér 1, H-4032 Debrecen, Hungary
3
Department of Plant Physiology and Plant Ecology, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, Festetics Str. 7, 8360 Keszthely, Hungary
4
Department of Botany, Faculty of Science and Technology, University of Debrecen, Egyetem Tér 1, H-4032 Debrecen, Hungary
5
Department of Information Technology and Its Applications, Faculty of Information Technology, University of Pannonia, Gasparich Márk Str. 18/A, 8900 Zalaegerszeg, Hungary
*
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2024, 25(17), 9179; https://doi.org/10.3390/ijms25179179 (registering DOI)
Submission received: 1 August 2024 / Revised: 18 August 2024 / Accepted: 19 August 2024 / Published: 23 August 2024
(This article belongs to the Special Issue Advances in Plant Genomics and Genetics)

Abstract

The endogenous stress metabolite β-aminobutyric acid (BABA) primes plants for enhanced resistance against abiotic and biotic stress by activating a complex phytohormone signaling network that includes abscisic acid (ABA), jasmonic acid (JA), salicylic acid (SA), and ethylene (ET). In this study, through stringent filtering, we identify 14 master regulatory transcription factors (TFs) from the DOF, AHL, and ERF families that potentially regulate the biosynthesis and signaling of these phytohormones. Transcriptional analysis of BABA-treated Arabidopsis thaliana and Hordeum vulgare suggests that DOF family TFs play a crucial role in stress response regulation in both species. BABA treatment in A. thaliana upregulates the TFs MNB1A and PBF and enhances the expression of the genes ICS1, EDS5, and WIN3 in the SA biosynthesis pathway, potentially boosting NPR1 and PR1 in the SA signaling pathway. Conversely, in H. vulgare, the BABA-induced upregulation of TF DOF5.8 may negatively regulate SA biosynthesis by downregulating ICS1, EDS5, and PR1. Additionally, in A. thaliana, BABA triggers the expression of TF PBF, which may result in the decreased expression of MYC2, a key gene in JA signaling. In contrast, H. vulgare exhibits increased expression of ERF2 TF, which could positively regulate the JA biosynthesis genes LOX and Tify9, along with the COI1 and JAZ genes involved in the JA signaling pathway. These findings offer new perspectives on the transcriptional regulation of phytohormones during plant priming.
Keywords: induced resistance; priming; β-aminobutyric acid (BABA); transcription factor; phytohormone; cis-acting factors; DOF; AHL; ERF induced resistance; priming; β-aminobutyric acid (BABA); transcription factor; phytohormone; cis-acting factors; DOF; AHL; ERF

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MDPI and ACS Style

Virág, E.; Nagy, Á.; Tóth, B.B.; Kutasy, B.; Pallos, J.P.P.; Máthéné Szigeti, Z.; Máthé, C.; Kardos, G.; Hegedűs, G. Master Regulatory Transcription Factors in β-Aminobutyric Acid-Induced Resistance (BABA-IR): A Perspective on Phytohormone Biosynthesis and Signaling in Arabidopsis thaliana and Hordeum vulgare. Int. J. Mol. Sci. 2024, 25, 9179. https://doi.org/10.3390/ijms25179179

AMA Style

Virág E, Nagy Á, Tóth BB, Kutasy B, Pallos JPP, Máthéné Szigeti Z, Máthé C, Kardos G, Hegedűs G. Master Regulatory Transcription Factors in β-Aminobutyric Acid-Induced Resistance (BABA-IR): A Perspective on Phytohormone Biosynthesis and Signaling in Arabidopsis thaliana and Hordeum vulgare. International Journal of Molecular Sciences. 2024; 25(17):9179. https://doi.org/10.3390/ijms25179179

Chicago/Turabian Style

Virág, Eszter, Ágnes Nagy, Beáta B. Tóth, Barbara Kutasy, József Péter Péter Pallos, Zsuzsa Máthéné Szigeti, Csaba Máthé, Gábor Kardos, and Géza Hegedűs. 2024. "Master Regulatory Transcription Factors in β-Aminobutyric Acid-Induced Resistance (BABA-IR): A Perspective on Phytohormone Biosynthesis and Signaling in Arabidopsis thaliana and Hordeum vulgare" International Journal of Molecular Sciences 25, no. 17: 9179. https://doi.org/10.3390/ijms25179179

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