Ján Kováč

ORCID: 0000-0002-2173-9694
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About
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Research Areas
  • Plant Stress Responses and Tolerance
  • Lignin and Wood Chemistry
  • Plant responses to water stress
  • Aluminum toxicity and tolerance in plants and animals
  • Polysaccharides and Plant Cell Walls
  • Plant Molecular Biology Research
  • Carbon dioxide utilization in catalysis
  • Plant Pathogens and Fungal Diseases
  • Plant tissue culture and regeneration
  • biodegradable polymer synthesis and properties
  • Plant Micronutrient Interactions and Effects
  • Heavy metals in environment
  • Plant Taxonomy and Phylogenetics
  • Plant Reproductive Biology
  • Mycorrhizal Fungi and Plant Interactions
  • Agricultural Engineering and Mechanization
  • Plant responses to elevated CO2
  • Microbial Metabolites in Food Biotechnology
  • Forest Management and Policy
  • Wood Treatment and Properties
  • Soil Mechanics and Vehicle Dynamics
  • Postharvest Quality and Shelf Life Management
  • Synthetic Organic Chemistry Methods
  • Yeasts and Rust Fungi Studies
  • Advanced Polymer Synthesis and Characterization

Technical University of Zvolen
2013-2025

Institute of Botany of the Slovak Academy of Sciences
2020-2022

Slovak Academy of Sciences
1992-2022

Comenius University Bratislava
1992-2022

Pharmac
1992

Institute of Plant Genetics, Polish Academy of Sciences
1992

Abstract Hydrogen peroxide (H 2 O ) is a ubiquitous signal regulating many biological processes, including innate immunity, in all eukaryotes. However, it remains largely unknown that how transcription factors directly sense H Here, we report rice basic/helix-loop-helix factor bHLH25 senses to confer resistance multiple diseases caused by fungi or bacteria. Upon pathogen attack, plants increase the production of , which oxidizes at methionine 256 nucleus. Oxidized represses miR397b...

10.1038/s41422-024-01058-4 article EN cc-by Cell Research 2025-01-14

Abstract Abscisic acid (ABA) is a key phytohormone underlying plant resistance to toxic metals. However, regulatory effects of ABA on apoplastic transport in roots and consequences for uptake metal ions are poorly understood. Here, we demonstrate how regulates development barriers two ecotypes Sedum alfredii assess cadmium (Cd) uptake. Under Cd treatment, increased endogenous level was detected nonhyperaccumulating ecotype (NHE) due up‐regulated expressions biosynthesis genes ( SaABA2 ,...

10.1111/pce.13506 article EN Plant Cell & Environment 2018-12-21

Although the significance of apoplasmic barriers in roots with regards to uptake toxic elements is generally known, contribution bypasses (ABs) cadmium (Cd) hyperaccumulation little understood. Here, we employed a combination stable isotopic tracer techniques, an ABs tracer, hydraulic measurements, suberin lamellae staining, metabolic inhibitors, and antitranspirants investigate quantify impact on translocation Cd xylem hyperaccumulating (H) ecotype non-hyperaccumulating (NH) Sedum alfredii....

10.1093/jxb/erw453 article EN cc-by Journal of Experimental Botany 2016-12-16

Heavy metals induce changes in root metabolism and physiology, which can lead to a complex remodelling of the system. The final morphological responses radish (Raphanus sativus) roots exposed toxic concentrations heavy metal (Cu) include growth inhibition, differentiation xylem vessels close tip, enhanced suberin lamellae deposition lateral production. Recently, we have found that such morphology anatomy are coupled formation subero-lignified apical deposit (SLAD) very tip.To clarify details...

10.1093/aob/mcy013 article EN Annals of Botany 2018-01-18

Traditional flame retardants often contain halogens and produce toxic gases when burned. Hence, in this study, low-cost, environmentally friendly compounds that act as fire are investigated. These materials nanoparticles, from which TiO2 SiO2 the most promising. In work, pedunculate oak wood specimens were modified with sodium silicate (Na2SiO3, i.e., water glass) TiO2, SiO2, ZnO nanoparticles using vacuum-pressure technique. Changes samples characteristics of studied via thermal analysis...

10.3390/nano11123405 article EN cc-by Nanomaterials 2021-12-16

The impact of atmospheric deposition cadmium (Cd) in cereal crops has become a global concern. Enhanced lignin content was expected to benefit the plant performance against Cd exposure. To date, however, underlying mechanisms regulating foliar absorption rice (Oryza sativa L.) and its effect on grain yield remains unclear. In present study, mechanism response leaf exposure were investigated using

10.1016/j.ecoenv.2022.114481 article EN cc-by-nc-nd Ecotoxicology and Environmental Safety 2022-12-27

Toxic metal pollution requires significant adjustments in plant metabolism. Here, we show that the microbiota plays an important role this process. The endophytic Sporobolomyces ruberrimus isolated from a serpentine population of Arabidopsis arenosa protected plants against excess metals. Coculture with its native host and thaliana inhibited Fe Ni uptake. It had no effect on Zn Cd uptake inhibition was confirmed wheat rape. Our investigations that, for inhibitory effect, interference...

10.1111/pce.14473 article EN cc-by-nc-nd Plant Cell & Environment 2022-10-26

2,2,4,4-Tetramethyl-1,3-cyclobutanediol (TMCD) is a diol monomer for terephthalic acid (TPA) class of copolyesters that can increase the glass transition temperature and mechanical strength in comparison to conventional TPA polyesters. TMCD-modified poly (1,4-cyclohexylenedimethylene terephthalate) (PCTT) has been used manufacture consumer products with good toughness, heat resistance clarity. However, suitability PCTT 3D printing had not evaluated. Therefore, plasticware was as starting...

10.1016/j.polymertesting.2022.107916 article EN cc-by Polymer Testing 2022-12-26

Abstract Background and Aims Cell walls of the peri-endodermis, a layer adjacent to endodermis in alpine pennycress (Noccaea caerulescens) roots, form C-shaped peri-endodermal thickenings (PETs). Despite its specific position close endodermis, assumed similarity PETs phi many other species, fact that N. caerulescens is well-studied heavy-metal-hyperaccumulating plant, PET as root trait still not understood. Methods Here, we characterized cell by histochemical techniques, Raman spectroscopy,...

10.1093/aob/mcaa069 article EN cc-by Annals of Botany 2020-04-14

Indented growth rings were found long ago to be experimentally induced in Pinus halepensis Miller by thin parallel axial scratching of the bark up vascular cambium with a sharp blade. Here, we show that when and P. are wounded wide wounds (“windows”) rather than scratches, indented become dramatically more indented. All ten trees “windows” responded very strong (especially first two years) resulted formation conspicuous, extremely wood formed between woundings. This is true for both trunks...

10.3390/plants13162265 article EN cc-by Plants 2024-08-15

The main tasks of this research are an extended analysis the technological rut formation process’s geometric, force, and energy characteristics as a result repeated passage forest machine on soil surface. Existing experimental studies rutting process associated with significant material costs disruption ecosystem. purpose study is to obtain similar data in laboratory conditions, well establishing correspondence these results field studies. experiments were carried out specialized “soil...

10.3390/f15010074 article EN Forests 2023-12-29

Previous phytopathological studies of the fungal pathogen Nectria cinnabarina have been focused on its distribution and host diversity but little is known about spread this defence responses forest trees to an infection inside tissues. Histopathological alterations bark, periderm, phloem woody tissues were investigated in sycamore maple (Acer pseudoplatanus) branches following their natural attack by advanced anamorph teleomorph developmental stages fungus. Light, fluorescence, confocal...

10.3390/f13030452 article EN Forests 2022-03-13

Widespread increases in soil salinization significantly reduce agricultural lands. Still, salt-tolerant plants, such as Salicornia europaea L., can play a crucial role the reclamation of these During last few years, scientists have reported that anatomical modifications S. enable plant to prevent damage caused by high salinity. However, there is limited knowledge about their biophysical cell responses under salt adaptations. It essential meet world’s demand for sustainably produced biomass...

10.2139/ssrn.4624970 preprint EN 2023-01-01

2,2,4,4-Tetramethyl-1,3-cyclobutanediol (TMCD) is a diol monomer for terephthalic acid (TPA) class of copolyesters that can increase the glass transition temperature and impact strength in comparison to conventional TPA polyesters. TMCD-modified poly(1,4-cyclohexanedimethylene terephthalate) (PCTT) being used manufacture consumer products with good toughness, heat resistance clarity. Consumer plasticware was as starting material investigate suitability this copolyester fused deposition...

10.2139/ssrn.4182397 article EN SSRN Electronic Journal 2022-01-01
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