Special Issues

Regulation of Phytohormone Biosynthesis and Signaling

Submission Deadline: 15 August 2025 View: 211 Submit to Special Issue

Guest Editor

Dr. Eszter Virág
Research Institute for Medicinal Plants and Herbs Ltd., Budakalász, HUNGARY
Institute of One Health, Faculty of Health Science, University of Debrecen, H-4032, Debrecen, Egyetem Tér 1., HUNGARY


Summary

Plants frequently encounter recurrent biotic and abiotic stresses, potentially resulting in significant yield reductions, especially under severe conditions. Besides the pre-existing defense mechanisms, plants can activate structural and chemical defense mechanisms following a pathogen assault. These inducible defenses are governed by the plant's innate immune system, protecting against various potentially detrimental microorganisms. The regulation of plant immunity involves small-molecule phytohormones. These hormones often interact with each other and transcription factors, regulating physiological and molecular responses, including activation of the antioxidant system, accumulation of amino acids and secondary metabolites, regulation of stomatal opening, closing, photosynthesis, etc.


The Special Issue aims to collect research articles on regulating phytohormone systems, including biosynthesis, signaling under stress conditions, priming, flowering, and plant-pathogen interaction. Studies on plant physiology, molecular biology, and genetics are encouraged to submit manuscripts. 


Keywords

priming, plant protection, phytohormone regulation, transcriptomics, plant-pathogen interaction, biostimulation

Published Papers


  • Open Access

    REVIEW

    Gasotransmitters as Key Members of the Signaling Network Regulating Stomatal Response: Interaction with Other Molecules

    Yuriy E. Kolupaev, Tetiana O. Yastreb, Alexander P. Dmitriev
    Phyton-International Journal of Experimental Botany, DOI:10.32604/phyton.2024.057922
    (This article belongs to the Special Issue: Regulation of Phytohormone Biosynthesis and Signaling)
    Abstract Stomatal closure, which serves to limit water loss, represents one of the most rapid and critical reactions of plants, occurring not only in response to drought but also to a range of other stressors, including salinity, extreme temperatures, heavy metals, gaseous toxicants, and pathogen infection. ABA is considered to be the main regulator of stomatal movements in plants under abiotic stress. In the last two decades, however, the list of plant hormones and other physiologically active substances that affect stomatal status has expanded considerably. It is believed that stomata are regulated by a complex multicomponent… More >

  • Open Access

    Recent Breakthroughs in the Characterization of Abscisic Acid Efflux Transporters: Shedding New Light on Abscisic Acid Dynamics and Regulation

    Ivan Couée
    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2707-2714, 2024, DOI:10.32604/phyton.2024.058101
    (This article belongs to the Special Issue: Regulation of Phytohormone Biosynthesis and Signaling)
    Abstract The 15-carbon terpenoid abscisic acid (ABA) acts in vascular plants as a versatile hormone playing essential roles in reproductive development, vegetative development and growth, stress-development interactions, and physiological responses to abiotic and biotic stresses. Over the past 60 years, ABA dynamics, regulation, and responses have been progressively characterized: synthesis, transport and translocation, conjugation and deconjugation, metabolism, sensing, signal transduction, and downstream responses. In this context, the discovery of ABA exporters and importers has added novel dimensions to the understanding of ABA regulation. Moreover, since the initial discovery of the adenosine triphosphate-binding cassette (ABC) AtABCG25 exporter… More >

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