Plant Stress Physiology and Photosynthesis Research Group


Head of Group: Péter Poór, PhD, associate professor

Group members:

Dr. Irma Tari, PhD, r. associate professor
Dr. Attila Ördög, PhD, assistant professor
Zalán Czékus, research assistant
Nadeem Iqbal, PhD student
András Kukri, PhD student
Eta Bécsné, technical assistant




Our Research Group investigates plant stress responses to various biotic and abiotic stress factors. We are focusing on the light-dependent role of plant defence and cell death mechanisms after treatment with various fungal and bacterial elicitors (e.g. flg22, CHT) and toxins (e.g. FB1, FA), as well as herbicides. In addition, we also examine salt stress-induced physiological, biochemical, and molecular responses of plants with special emphasis on the role of ethylene, abscisic acid, jasmonic acid, polyamines, reactive oxygen- and nitrogen species, antioxidants, and proteases. Another topic is the investigation of the role of phytohormones under ER stress in tomato plants. Our newest research topic is to elucidate the red light-regulated plant defence mechanisms, especially focusing on the role of red light applied at night when most of the plant pathogens show higher virulence.


Methods and instrumentation:

  • GC
  • HPLC
  • Fluorescence Microscopy
  • Photometric analysis
  • Photosynthetic measurements (LI-COR, DualPAM, Mycroscopy-PAM)
  • qRT-PCR
  • protein analysis, WB
  • ICP-MS
  • TEM



Hungarian partners:

  • Gabriella Szalai (CAR, ELRN)
  • Tibor Janda (CAR, ELRN)
  • Dénes Dudits (BRS, ELRN)
  • Tibor Bartók (MATE, Fumizol Ltd.)
  • László Galgóczy (Univ. of Szeged, Department of Biotechnology)
  • András Szekeres (Univ. of Szeged, Department of Microbiology)
  • Zoltán Bátori (Univ. of Szeged, Department of Ecology)
  • Nikolett Bódi (Univ. of Szeged, Department of Physiology, Anatomy and Neuroscience)

Partners from abroad:

  • Andrea Zsigmond (Sapientia University, Cluj, Romania)
  • M. Iqbal R. Khan (School of Chemical and Life Sciences, Jamia Hamdard, India)
  • Boris Popovic (University of Novi Sad, Faculty of Agriculture)




Selected publications:

Czékus, Z.; Koprivanacz, P. ; Kukri, A. ; Iqbal, N. ; Ördög, A. ; Poór, P.:
The role of photosynthetic activity in the regulation of flg22-induced local and systemic defence reaction in tomato.
PHOTOSYNTHETICA 60 : 2 pp. 259-270. , 12 p. (2022)

Czékus, Zalán ; Szalai, Gabriella ; Tari, Irma ; Khan, M. Iqbal R. ; Poór, Péter:
Role of ethylene in ER stress and the unfolded protein response in tomato (Solanum lycopersicum L.) plants.
PLANT PHYSIOLOGY AND BIOCHEMISTRY 181 pp. 1-11. , 11 p. (2022)

Iqbal, Nadeem ; Czékus, Zalán ; Angeli, Cserne ; Bartók, Tibor ; Poór, Péter ; Ördög, Attila:
Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

Takács, Zoltán ; Czékus, Zalán ; Tari, Irma ; Poór, Péter:
HThe role of ethylene signalling in the regulation of salt stress response in mature tomato fruits: Metabolism of antioxidants and polyamines.
JOURNAL OF PLANT PHYSIOLOGY 277 p. 153793 Paper: 153793 (2022)

Czékus, Zalán ; Kukri, András ; Hamow, Kamirán Áron ; Szalai, Gabriella ; Tari, Irma ; Ördög, Attila ; Poór, Péter:
Activation of Local and Systemic Defence Responses by Flg22 IsDependent on Daytime and Ethylene in Intact Tomato Plants.

Czékus, Zalán ; Iqbal, Nadeem ; Pollák, Boglárka ; Martics, Atina ; Ördög, Attila ; Poór, Péter:
Role of ethylene and light in chitosan-induced local and systemic defence responses of tomato plants.
JOURNAL OF PLANT PHYSIOLOGY 263 Paper: 153461 , 12 p. (2021)

Iqbal, N. ; Czékus, Z. ; Ördög, A. ; Poór, P.:
Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants.
PHOTOSYNTHETICA 59 : 2 pp. 337-348. , 12 p. (2021)

Iqbal, Nadeem ; Czékus, Zalán ; Poór, Péter ; Ördög, Attila:
Plant defence mechanisms against mycotoxin fumonisin B.
CHEMICO-BIOLOGICAL INTERACTIONS 342 Paper: 109494 , 12 p. (2021)

Takács, Zoltán ; Poór, Péter; Tari, Irma:
Interaction between polyamines and ethylene in the response to salicylic acid under normal photoperiod and prolonged darkness.
PLANT PHYSIOLOGY AND BIOCHEMISTRY 167 pp. 470-480. , 11 p. (2021)

Czékus, Zalán ; Csíkos, Orsolya ; Ördög, Attila ; Tari, Irma ; Poór, Péter:
Effects of Jasmonic Acid in ER Stress and Unfolded Protein Response in Tomato Plants.
BIOMOLECULES 10 : 7 Paper: 1031 , 20 p. (2020)

Czékus, Zalán ; Farkas, Máté ; Bakacsy, László ; Ördög, Attila ; Gallé, Ágnes ; Poór, Péter:
Time-Dependent Effects of Bentazon Application on the Key Antioxidant Enzymes of Soybean and Common Ragweed.
SUSTAINABILITY 12 : 9 Paper: 3872 , 20 p. (2020)

Czékus, Zalán ; Poór, Péter ; Tari, Irma ; Ördög, Attila:
Effects of Light and Daytime on the Regulation of Chitosan-Induced Stomatal Responses and Defence in Tomato Plants.
PLANTS-BASEL 9 : 1 Paper: 59 , 21 p. (2020)

Poór, Péter:
Effects of Salicylic Acid on the Metabolism of Mitochondrial Reactive Oxygen Species in Plants.
BIOMOLECULES 10 : 2 Paper: 341 , 20 p. (2020)

Borbély, Péter; Poór, Péter ; Tari, Irma:
Changes in physiological and photosynthetic parameters in tomato of different ethylene status under salt stress: effects of exogenous 1-aminocyclopropane-1-carboxylic acid treatment and the inhibition of ethylene signalling.
PLANT PHYSIOLOGY AND BIOCHEMISTRY 156 pp. 345-356. , 12 p. (2020)

Gallé, Ágnes ; Czékus, Zalán ; Bela, Krisztina ; Horváth, Edit ; Ördög, Attila ; Csiszár, Jolán ; Poór, Péter:
Plant Glutathione Transferases and Light.
FRONTIERS IN PLANT SCIENCE 9 Paper: 1944 , 12 p. (2019)

Péter, Poór; Zalán, Czékus ; Irma, Tari ; Attila, Ördög:
The Multifaceted Roles of Plant Hormone Salicylic Acid in Endoplasmic Reticulum Stress and Unfolded Protein Response.

Poor, P ; Borbely, P ; Bodi, N ; Bagyanszki, M. ; Tari, I.:
Effects of salicylic acid on photosynthetic activity and chloroplast morphology under light and prolonged darkness.
PHOTOSYNTHETICA 57 : 2 pp. 367-376. , 10 p. (2019)

Poór, Péter; Patyi, Gábor ; Takács, Zoltán ; Szekeres, András ; Bódi, Nikolett ; Bagyánszki, Mária ; Tari, Irma:
Salicylic acid-induced ROS production by mitochondrial electron transport chain depends on the activity of mitochondrial hexokinases in tomato (Solanum lycopersicum L.).
JOURNAL OF PLANT RESEARCH 132 : 2 pp. 273-283. , 11 p. (2019)

Poór, Péter ; Borbély, Péter ; Czékus, Zalán ; Takács, Zoltán ; Ördög, Attila ; Popović, Boris ; Tari, Irma:
Comparison of changes in water status and photosynthetic parameters in wild type and abscisic acid-deficient sitiens mutant of tomato (Solanum lycopersicum cv. Rheinlands Ruhm) exposed to sublethal and lethal salt stress.
JOURNAL OF PLANT PHYSIOLOGY 232 pp. 130-140. , 11 p. (2019)
















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