TY - JOUR AU - Iqbal, Nadeem AU - Ördög, Attila AU - Koprivanacz, Péter AU - Kukri, András AU - Czékus, Zalán AU - Poór, Péter TI - Salicylic acid- and ethylene-dependent effects of the ER stress-inducer tunicamycin on the photosynthetic light reactions in tomato plants JF - JOURNAL OF PLANT PHYSIOLOGY J2 - J PLANT PHYSIOL VL - 295 PY - 2024 PG - 8 SN - 0176-1617 DO - 10.1016/j.jplph.2024.154222 UR - https://m2.mtmt.hu/api/publication/34802566 ID - 34802566 LA - English DB - MTMT ER - TY - JOUR AU - Iqbal, Nadeem AU - Poór, Péter TI - Plant Protection by Tannins Depends on Defence-Related Phytohormones JF - JOURNAL OF PLANT GROWTH REGULATION J2 - J PLANT GROWTH REGUL PY - 2024 SN - 0721-7595 DO - 10.1007/s00344-024-11291-1 UR - https://m2.mtmt.hu/api/publication/34802564 ID - 34802564 AB - Plants produce a wide variety of secondary metabolites to sustain and protect themselves against a wide range of stresses. Among these metabolites, tannins are one of the most abundant polyphenolic compounds, accounting for 25% of the dry weight of leaves, roots and bark of woody plants, but are also abundant in flowering and seed-producing plants. The presence of tannins in these organs serves to protect plants against herbivorous and pathogenic attack through their antidigestive and antimicrobial properties. In addition, tannins play a role in regulating plant growth and development by inhibiting the consumption of unripe fruits due to their astringency. In addition, several studies have also revealed various roles of them under environmental stresses. Tannins can be classified into condensed tannins (CTs), hydrolysable tannins (HTs) and phlorotannins. They are synthesised in plants via the acetate–malonate and shikimic acid pathways. Their accumulation is regulated by several transcription factors during normal development and under different stress conditions. Despite their multiple roles in plant life, information on the regulation of tannin metabolism by defence-related phytohormones is very limited. To cope with biotic and abiotic stresses, plant responses are regulated by defence-related phytohormones such as salicylic acid (SA), jasmonic acid (JA), ethylene (ET) and abscisic acid (ABA), which act as regulators of tannin production under adverse conditions. This review focuses on tannin production, moreover its occurrence, defence potential and regulation by phytohormones under different environmental and biotic stresses, based on the most recent and relevant data. LA - English DB - MTMT ER - TY - JOUR AU - Bakacsy, László AU - Kardos, Luca Viktória AU - Szepesi, Ágnes AU - Nagy, Krisztina Napsugár AU - Vasas, Andrea AU - Feigl, Gábor TI - Investigation of the Allelopathic Effect of Two Invasive Plant Species in Rhizotron System JF - LIFE-BASEL J2 - LIFE-BASEL VL - 14 PY - 2024 IS - 4 PG - 15 SN - 2075-1729 DO - 10.3390/life14040475 UR - https://m2.mtmt.hu/api/publication/34771221 ID - 34771221 AB - A key question in plant invasion biology is why invasive plants are more competitive in their introduced habitat than in their native habitat. Studies show that invasive species exhibit allelopathy, influencing other plants by releasing chemicals. Research on allelopathy uses in vitro tests, investigating effects on seed germination and seedling development. Although soil plays a role in modifying allelopathic effects, observations with soil are rare and almost nothing is known about the root development of test plants developing in soil and the effects of allelopathic compounds on root architecture. Our study evaluates the allelopathic effects of false indigo-bush (Amorpha fruticosa L.) and common milkweed (Asclepias syriaca L.) on oilseed rape growth as a model plant. The rhizotron system was used to study the effect of morphology and root architecture. Leaf–soil mixtures at 0.5%, 1%, and 5% concentrations were used. Shoot and root development was strongly inhibited at 5%. But there was no difference between the allelopathy of the two species, and the application of lower concentrations did not show any effect, demonstrating that soil has a significant modifying effect on their allelopathy. Our results highlight that the development of roots growing in the soil is also worth investigating in connection with allelopathy, which can strengthen the ecological importance of allelochemicals during successful invasions. LA - English DB - MTMT ER - TY - JOUR AU - Zsigmond, Laura AU - Juhász-Erdélyi, Annabella AU - Valkai, Ildikó AU - Aleksza, Dávid AU - Rigó, Gábor AU - Kant, Kamal AU - Szepesi, Ágnes AU - Fiorani, Fabio AU - Körber, Niklas AU - Kovács, László AU - Szabados, László TI - Mitochondrial complex I subunit NDUFS8.2 modulates responses to stresses associated with reduced water availability JF - PLANT PHYSIOLOGY AND BIOCHEMISTRY J2 - PLANT PHYSIOL BIOCH (PPB) VL - 208 PY - 2024 SN - 0981-9428 DO - 10.1016/j.plaphy.2024.108466 UR - https://m2.mtmt.hu/api/publication/34721677 ID - 34721677 LA - English DB - MTMT ER - TY - JOUR AU - Bakacsy, László AU - Szepesi, Ágnes TI - A case study on the early stage of Pinus nigra invasion and its impact on species composition and pattern in Pannonic sand grassland JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 14 PY - 2024 IS - 1 PG - 10 SN - 2045-2322 DO - 10.1038/s41598-024-55811-1 UR - https://m2.mtmt.hu/api/publication/34719000 ID - 34719000 AB - Alien woody species are successful invaders, frequently used for afforestation in regions like semi-arid lands. Shrubs and trees create important microhabitats in arid areas. Understorey vegetation in these habitats has unique species composition and coexistence. However, the impact of solitary woody species on understorey vegetation is less understood. This study evaluated the effect of native ( Juniperus communis ) and invasive solitary conifers ( Pinus nigra ) on surrounding vegetation, where individuals were relatively isolated (referred to as solitary conifers). The field study conducted in Pannonic dry sand grassland in 2018 recorded plant and lichen species presence around six selected solitary conifers. Composition and pattern of understorey vegetation were assessed using 26 m belt transects with 520 units of 5 cm × 5 cm contiguous microquadrats. Compositional diversity (CD) and the number of realized species combinations (NRC) were calculated from the circular transects. Results showed native conifer J. communis created more complex, organized microhabitats compared to alien P. nigra . CD and NRC values were significantly higher under native conifers than invasive ones ( p = 0.045 and p = 0.026, respectively). Native species also had more species with a homogeneous pattern than the alien species. Alien conifers negatively affected understorey vegetation composition and pattern: some species exhibited significant gaps and clusters of occurrences along the transects under P. nigra . Based on our study, the removal of invasive woody species is necessary to sustain habitat diversity. LA - English DB - MTMT ER - TY - JOUR AU - Nazir, Faroza AU - Poór, Péter AU - Gupta, Ravi AU - Kumari, Sarika AU - Nawaz, Kashif AU - Khan, M. Iqbal R. TI - Plant hormone ethylene: A leading edge in conferring drought stress tolerance JF - PHYSIOLOGIA PLANTARUM J2 - PHYSIOL PLANTARUM VL - 176 PY - 2024 IS - 1 PG - 21 SN - 0031-9317 DO - 10.1111/ppl.14151 UR - https://m2.mtmt.hu/api/publication/34479762 ID - 34479762 AB - Agricultural sufficient productivity is of paramount importance for ensuring food security and conserving soil health to support the world's agronomy. Climatic abruptions have been emerging as one of the most nerve‐pressing issues for the sustainment of the planet Earth in the twenty‐first century. Among the various environmental constraints, drought stress stands out as a potent factor restricting crop growth and productivity. It triggers a myriad of intricate responses in plants to combat the underlying stress‐mediated adversities. Gaining a comprehensive understanding of the key physiological and molecular mechanisms that enable plants to withstand drought stress is crucial for developing effective strategies to enhance crop resilience. Ethylene, a gaseous plant hormone, influences the adaptive measures adopted by plants subjected to drought stress by regulating the drought stress‐mediated signal transduction‐associated responses. The present review article provides an in‐depth understanding of the critical roles of ethylene in enhancing plants' ability to restrain the severity of drought stress. It also highlights the significance of ethylene signaling components in regulating plant survival and drought stress tolerance. Additionally, we have illustrated the additive and antagonistic interactions of ethylene with other plant growth regulators, which instigate the tolerance responses. Conclusively, this review emphasizes the significance of complex networks involved in ethylene‐mediated drought tolerance, providing valuable insights for future research and uncovering novel studies in the field of ethylene biology. LA - English DB - MTMT ER - TY - JOUR AU - Iqbal, Nadeem AU - Czékus, Zalán AU - Ördög, Attila AU - Poór, Péter TI - Fusaric acid-evoked oxidative stress affects plant defence system by inducing biochemical changes at subcellular level JF - PLANT CELL REPORTS J2 - PLANT CELL REP VL - 43 PY - 2024 IS - 1 PG - 17 SN - 0721-7714 DO - 10.1007/s00299-023-03084-9 UR - https://m2.mtmt.hu/api/publication/34442303 ID - 34442303 AB - Fusaric acid (FA) is one of the most harmful phytotoxins produced in various plant–pathogen interactions. Fusarium species produce FA as a secondary metabolite, which can infect many agronomic crops at all stages of development from seed to fruit, and FA production can further compromise plant survival because of its phytotoxic effects. FA exposure in plant species adversely affects plant growth, development and crop yield. FA exposure in plants leads to the generation of reactive oxygen species (ROS), which cause cellular damage and ultimately cell death. Therefore, FA-induced ROS accumulation in plants has been a topic of interest for many researchers to understand the plant–pathogen interactions and plant defence responses. In this study, we reviewed the FA-mediated oxidative stress and ROS-induced defence responses of antioxidants, as well as hormonal signalling in plants. The effects of FA phytotoxicity on lipid peroxidation, physiological changes and ultrastructural changes at cellular and subcellular levels were reported. Additionally, DNA damage, cell death and adverse effects on photosynthesis have been explained. Some possible approaches to overcome the harmful effects of FA in plants were also discussed. It is concluded that FA-induced ROS affect the enzymatic and non-enzymatic antioxidant system regulated by phytohormones. The effects of FA are also associated with other photosynthetic, ultrastructural and genotoxic modifications in plants. LA - English DB - MTMT ER - TY - JOUR AU - Bodor, Attila AU - Feigl, Gábor AU - Kolossa, Bálint AU - Mészáros, Enikő AU - Laczi, Krisztián AU - Kovács, Etelka AU - Perei, Katalin AU - Rákhely, Gábor TI - Soils in distress: The impacts and ecological risks of (micro)plastic pollution in the terrestrial environment JF - ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY J2 - ECOTOX ENVIRON SAFE VL - 269 PY - 2024 PG - 23 SN - 0147-6513 DO - 10.1016/j.ecoenv.2023.115807 UR - https://m2.mtmt.hu/api/publication/34432038 ID - 34432038 N1 - Funding Agency and Grant Number: National Research, Development and Innovation Office, Hungary (NKFIH); Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences, Hungary [UNKP-23-5-SZTE-701]; New National Excellence Program of the Ministry of Human Capacities, Hungary [FK 142475]; [BO/00181/21/4] Funding text: G. F. was supported by the National Research, Development and Innovation Office, Hungary (NKFIH FK 142475) , the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences, Hungary (Grant no. BO/00181/21/4) and the New National Excellence Program of the Ministry of Human Capacities, Hungary (UNKP-23-5-SZTE-701) . In memory of Gabor Rakhely, who passed away during the revision process of this manuscript, we honour his contributions to this work. LA - English DB - MTMT ER - TY - JOUR AU - Kondak, Selahattin AU - Janovszky, Patrick Martin AU - Szőllősi, Réka AU - Molnár, Árpád AU - Kondak, Dóra AU - Adedokun, Oluwatosin Peace AU - Dimitrakopoulos, Panayiotis G. AU - Rónavári, Andrea AU - Kónya, Zoltán AU - Erdei, László AU - Galbács, Gábor AU - Kolbert, Zsuzsanna TI - Nickel oxide nanoparticles induce cell wall modifications, root anatomical changes, and nitrosative signaling in ecotypes of Ni hyperaccumulator Odontarrhena lesbiaca JF - ENVIRONMENTAL POLLUTION J2 - ENVIRON POLLUT VL - 341 PY - 2024 PG - 14 SN - 0269-7491 DO - 10.1016/j.envpol.2023.122874 UR - https://m2.mtmt.hu/api/publication/34353068 ID - 34353068 LA - English DB - MTMT ER - TY - JOUR AU - Nagy, Krisztina Napsugár AU - Kardos, Luca Viktória AU - Orbán, Zsófia AU - Bakacsy, László TI - The allelochemical potential of an invasive ornamental plant, the Indian blanket flower (Gaillardia pulchella Foug.) JF - PLANT SPECIES BIOLOGY J2 - PLANT SPEC BIOL VL - 39 PY - 2024 IS - 2 SP - 102 EP - 108 PG - 7 SN - 0913-557X DO - 10.1111/1442-1984.12441 UR - https://m2.mtmt.hu/api/publication/34299196 ID - 34299196 AB - Abstract Global spread of invasive plant species threatens biodiversity significantly, with a particularly high presence of invasives in the Asteraceae family. This is partly due to their wide use as ornamental plants and their rapid reproduction and allelopathy. The Indian blanket flower (Gaillardia pulchella) is a native North American species widely used as an ornamental plant and has become invasive in other countries. Although it contains bioactive compounds, its allelopathic impact on other plants has been largely unexplored. We conducted in vitro tests on oilseed rape (Brassica napus) germination and early growth to assess blanket flower’s allelopathy. Seeds were exposed to aqueous extracts at three different concentrations (10%, 20%, and 40%). The 40% extract significantly inhibited germination during the treatment. All three concentrations inhibited root growth, with the 40% treatment showing this effect from the second day. In contrast, the extracts promoted significantly shoot elongation. Fresh weight of seedlings was not affected by the extract, but the 10% treatment resulted in higher mass. These findings provide evidence of blanket flower’s allelopathic effects, shedding light on its invasive potential. LA - English DB - MTMT ER -