TY - JOUR AU - Rácz, Csaba AU - Molnár, Krisztina AU - Dövényi-Nagy, Tamás AU - Bakó, Károly István AU - Kathy, István AU - Szepsy, István AU - Csige, László AU - Dobos, Attila Csaba TI - Cultivar-Specific Expression of the Vintage Effect in Furmint Grapes from the Tokaj Wine Region Part I: Berry Growth, Sugar Accumulation and Dry Matter Formation JF - AGRONOMY (BASEL) J2 - AGRONOMY-BASEL VL - 16 PY - 2026 IS - 6 SN - 2073-4395 DO - 10.3390/agronomy16060594 UR - https://m2.mtmt.hu/api/publication/37009918 ID - 37009918 AB - Interannual variability in climatic conditions represents a major source of uncertainty in cool-climate viticulture, highlighting the need for cultivar-specific assessments of climate–quality relationships. A multi-year on-farm experiment with six monitoring sites has been conducted in vineyards representative of the Tokaj wine region to monitor and assess vintage effect. This study, as the first part of a broader research project evaluating must components, quantifies relationships between climatic indices and key yield- and sugar-related traits (berry weight, total soluble solids, and total dry extract) in Vitis vinifera L. cv. Furmint grown in the Tokaj wine region over three contrasting vintages. Thermal, radiative, and water-availability variables were calculated for discrete phenological phases and statistically analyzed to identify climatic predictors of berry growth and must composition. Berry weight exhibited pronounced vintage sensitivity, showing consistent associations with precipitation-related variables during early developmental stages. In contrast, total soluble solids and total dry extract displayed weaker and less consistent responses to interannual climatic variability. Several widely used heat-accumulation indices showed limited explanatory power, indicating a moderate climatic sensitivity of sugar-related traits in this cultivar. Overall, the results suggest that early-season climatic conditions exert a stronger influence on berry growth than late-season thermal extremes, while compositional parameters related to sugar accumulation remain comparatively stable. These findings highlight the need to incorporate cultivar-specific response functions into statistical models that assess projected climate-change effects on grape quality. LA - English DB - MTMT ER - TY - CONF AU - Mwalugha, Heltan M. AU - Molnár, Krisztina AU - Rácz, Csaba AU - Kovács, Szilvia AU - Adácsi, Cintia AU - Dövényi-Nagy, Tamás AU - Bakó, Károly István AU - Pócsi, István AU - Dobos, Attila Csaba AU - Pusztahelyi, Tünde ED - Feigl, Gábor ED - Poór, Péter TI - Physiological and biochemical responses of maize (Zea Mays l.) to toxigenic and atoxigenic strains of aspergillus flavus under field conditions T2 - 7th National Conference of Young Biotechnologists PB - MTA Agrártudományok Osztálya, Mezőgazdasági Biotechnológiai Tudományos Bizottság C1 - Budapest SN - 9786156448835 PY - 2026 SP - 80 UR - https://m2.mtmt.hu/api/publication/37217966 ID - 37217966 LA - English DB - MTMT ER - TY - CONF AU - Njomza, Gashi AU - Péter, Dávid AU - Szőke, Zsombor AU - Fauszt, Péter AU - Dobos, Attila Csaba AU - Gálné Remenyik, Judit AU - Stündl, László AU - Paholcsek, Melinda ED - Sárosi, József ED - László, Zsuzsanna ED - Dobozi, Réka TI - Insights into soil microbial diversity, community composition, and resistome profiles across agricultural systems T2 - ICOSTEE 2026: International Conference on Science, Technology, Engineering and Economy PB - Szegedi Tudományegyetem Mérnöki Kar C1 - Szeged SN - 9789636881306 PY - 2026 SP - 19 UR - https://m2.mtmt.hu/api/publication/37349995 ID - 37349995 LA - English DB - MTMT ER - TY - JOUR AU - Rácz, Csaba AU - Molnár, Krisztina AU - Dövényi-Nagy, Tamás AU - Bakó, Károly István AU - Kathy, István AU - Szepsy, István AU - Csige, László AU - Dobos, Attila Csaba TI - Cultivar-Specific Expression of the Vintage Effect in Furmint Grapes from the Tokaj Wine Region; Part II: Acid Balance, Potassium Accumulation and Tannin Content JF - AGRONOMY (BASEL) J2 - AGRONOMY-BASEL VL - 16 PY - 2026 IS - 13 SP - 1253 SN - 2073-4395 DO - 10.3390/agronomy16131253 UR - https://m2.mtmt.hu/api/publication/37369606 ID - 37369606 AB - Understanding how interannual climatic variability shapes must composition is critical for predicting wine quality under warming conditions, particularly for acid-retaining cultivars such as Vitis vinifera L. cv. Furmint. This study—conducted as a continuation of a previous investigation on Furmint berry weight, total soluble solids and total dry extract—evaluated titratable acidity, pH, potassium, ammonia and tannin content across three contrasting vintages (2022–2024) in the Tokaj wine region. Using a high-resolution meteorological dataset and an extensive climatic parameter matrix, exploratory analysis was conducted to evaluate responses, and the most influential thermal, radiation-related and water-balance related climatic factors associated with each must parameter were identified. Total acidity and pH showed consistent sensitivity to climatic variability: acidity decreased with mid-season warm nights and abundant summer rainfall, while pH was inversely associated with extreme heat events but increased under higher early-season rainfall and post-véraison irradiation. Potassium content exhibited partly atypical responses, showing positive correlations with late-season warm nights and frequent summer precipitation, and negative with early heat. Ammonia displayed weak to moderate climatic dependence, while tannic acid consistently decreased with higher thermal and irradiation loads. Overall, these results imply cultivar-specific climatic responses in Furmint and suggest that temperature extremes, nighttime heat and rainfall timing are important factors shaping must composition, providing a foundation to better understand the expression of vintage effects under climate change. LA - English DB - MTMT ER - TY - JOUR AU - Gashi, N AU - Dávid, P AU - Mikolás, Maja AU - Fauszt, Péter AU - Gál, F AU - Rácz, Csaba AU - Molnár, Krisztina AU - Stündl, László AU - Gálné Remenyik, Judit AU - Dobos, Attila Csaba AU - Paholcsek, Melinda TI - Land-use and depth-dependent assembly of soil microbiomes shapes ecological functions, interaction networks, and phytopathogenic communities across crop and orchard systems JF - ANTIOXIDANTS J2 - ANTIOXIDANTS-BASEL VL - 15 PY - 2026 IS - 8 PG - 39 SN - 2076-3921 DO - 10.3390/antiox15081017 UR - https://m2.mtmt.hu/api/publication/37447159 ID - 37447159 AB - Soil microorganisms are essential for nutrient cycling, plant productivity, and soil health, yet the relative importance of land-use and soil depth in shaping agricultural microbiomes remains poorly understood. This study investigated soil microbial communities across uncultivated land, alfalfa fields, crop systems (feed corn and sweet corn), and orchard systems (walnut and quince) in the Hajdúnánás region of Hungary using shotgun metagenomic sequencing and soil physicochemical analyses. Microbial alpha diversity showed limited variation among land-use systems but declined significantly with soil depth in both bacterial (Kruskal–Wallis, p = 0.00054) and fungal (p = 0.00051) communities. Beta diversity analyses identified soil depth as the primary driver of microbial community composition in both bacterial (R2 = 0.305, p = 0.001) and fungal (R2 = 0.277, p = 0.001) communities. In contrast, land-use significantly influenced only fungal community composition (R2 = 0.250, p = 0.005). Fungal alpha diversity showed significant negative relationships with soil pH and CaCO3, whereas bacterial diversity exhibited only weak correlations. Crop soils contained the highest numbers of unique bacterial and fungal taxa. Functional analyses revealed significant differences in nutrient cycling, plant-growth-related, decomposition, and environmental adaptation functions among land-use systems. In crop soils, topsoil communities were enriched in oxidative stress-related pathways involved in reactive oxygen species detoxification (ROS), redox homeostasis, and stress regulation, whereas subsoil communities showed a greater representation of antioxidant metabolite production functions. Co-occurrence network analyses indicated greater connectivity in perennial systems, particularly alfalfa soils. Analyses of bacterial and fungal species with reported phytopathogenic potential identified stable cores of phytopathogenic species across agricultural systems, with soil pH emerging as the strongest environmental factor associated with the abundance of phytopathogenic species. Overall, soil depth was the primary driver of bacterial and fungal community assembly, whereas land-use primarily shaped fungal community composition and influenced ecological functions, microbial interaction networks, and the distribution of phytopathogenic species. LA - English DB - MTMT ER - TY - JOUR AU - Demény, Márton János AU - Brassó, Dóra Lili AU - Rácz, Csaba AU - Szűcs, Márton AU - Tőzsér, János TI - Associations between weaning and post-weaning body measurements in Limousin cattle and their potential use for early preselection JF - VETERINARY AND ANIMAL SCIENCE J2 - VET ANIM SCI VL - 34 PY - 2026 PG - 13 SN - 2451-943X DO - 10.1016/j.vas.2026.100862 UR - https://m2.mtmt.hu/api/publication/37518209 ID - 37518209 AB - In beef cattle breeding, analysing body size parameters enables the evaluation of production-related correlations and growth dynamics. By assessing these traits at multiple time points, it is possible to examine whether early measurements are associated with later development and may provide information relevant to early selection decisions. In this study, the correlations between the data measured at weaning age (230 days) and at 13–14 months of age (weight, withers height, rump height, back length, shoulder width, hip width and pin width) were analysed. Data from bull calves classified as ‘Breeding-approved’ or ‘Removed at weaning age’ were also compared. The results indicated a weaker correlation between body measurements taken at weaning age (rAVG = 0.581) than at 13–14 months of age (rAVG= 0.640; n = 817). Pin width showed weak correlations with all other body dimensions and at both measurement time points (r = -0.009–0.293). The strongest positive correlation between the two measurement times was found for withers height (r = 0.618) and rump height (r = 0.631). The measurements of Removed bulls (n = 459) were compared with those of Breeding-approved bulls (n = 469). Comparative analysis revealed that Breeding-approved bulls had higher mean values for most traits than Removed bulls. In contrast, differences in pin width and overgrowth index were small and not consistently supported across the adjusted and unadjusted analyses. Overall, although Limousin calves exhibit variable growth rates, withers height and rump height may serve as useful preselection indicators in the breeding programme. These findings may support the identification of indicators for early selection in commercial beef production systems. LA - English DB - MTMT ER - TY - JOUR AU - Bakó, Károly István AU - Rácz, Csaba AU - Dövényi-Nagy, Tamás AU - Molnár, Krisztina AU - Dobos, Attila Csaba TI - Advancements in Leaf Area Index Estimation for Maize Using Modeling and Remote Sensing Techniques: A Review JF - AGRONOMY (BASEL) J2 - AGRONOMY-BASEL VL - 15 PY - 2025 IS - 3 PG - 22 SN - 2073-4395 DO - 10.3390/agronomy15030519 UR - https://m2.mtmt.hu/api/publication/35780003 ID - 35780003 AB - Maize is an important crop used as food, feed, and industrial raw material. Therefore, it is critical to maximize maize yield on available land by using optimal inputs and adapting to challenges posed by climate change. The Leaf Area Index (LAI) is a key parameter that provides significant assistance in forecasting maize yields. This study focuses on modeling the Leaf Area Index for maize. Specifically, it compiles and systematizes the main findings of papers published over the past approximately 10–15 years. Our results are organized and presented based on the five most commonly used models: CERES-Maize, AquaCrop, WOFOST, APSIM, and RZWQM2. The limitations of these models’ applicability are also discussed. We present the limitations of these models and compare their minimum climate input requirements. Additionally, we evaluate the performance of the models across different climate zones, explore how the integration of remote sensing data sources can enhance model estimation accuracy, and examine the potential for spatial scalability in maize LAI modeling. LA - English DB - MTMT ER - TY - JOUR AU - Mwalugha, Heltan M. AU - Molnár, Krisztina AU - Rácz, Csaba AU - Kovács, Szilvia AU - Adácsi, Cintia AU - Dövényi-Nagy, Tamás AU - Bakó, Károly István AU - Pócsi, István AU - Dobos, Attila Csaba AU - Pusztahelyi, Tünde TI - Irrigation, Nitrogen Supplementation, and Climatic Conditions Affect Resistance to Aspergillus flavus Stress in Maize JF - AGRICULTURE-BASEL J2 - AGRICULTURE-BASEL VL - 15 PY - 2025 IS - 7 PG - 34 SN - 2077-0472 DO - 10.3390/agriculture15070767 UR - https://m2.mtmt.hu/api/publication/36075800 ID - 36075800 AB - Maize production is increasingly challenged by climate change, which affects plant physiology, fungal colonization, and mycotoxin contamination. Aspergillus flavus, a saprophytic fungus, thrives in warm, dry conditions, leading to aflatoxin B1 (AFB1) accumulation, and posing significant food safety risks. Macro- and micro-climatic factors, including temperature, humidity, and precipitation, influence kernel development, leaf wetness duration, and mycotoxin biosynthesis. Nitrogen availability and irrigation play crucial roles in modulating plant responses to these stressors, affecting chlorophyll content, yield parameters, and fungal interactions. To investigate these interactions, a Completely Randomized Design (CRD) was employed from 2020 to 2022 to assess physiological changes in SY Orpheus maize hybrid under varying climatic conditions. Rising temperatures and declining relative humidity (RH) significantly reduced kernel number per ear length from 25.60 ± 0.34 in 2020 to 17.89 ± 0.39 in 2022 (p < 0.05), impacting yield. The AFB1 levels peaked in 2021 (156.88 ± 59.02 µg/kg), coinciding with lower humidity and increased fungal stress. Water availability improved kernel numbers and reduced AFB1 accumulation (p < 0.05) but did not significantly affect the total fungal load (p > 0.05). Nitrogen supplementation enhanced plant vigor, suppressed AFB1 biosynthesis, and influenced spectral indices. Potential confounding factors such as soil variability and microbial interactions may require further investigations. LA - English DB - MTMT ER - TY - CONF AU - Mwalugha, Heltan M. AU - Molnár, Krisztina AU - Rácz, Csaba AU - Kovács, Szilvia AU - Adácsi, Cintia AU - Dövényi-Nagy, Tamás AU - Bakó, Károly István AU - Pócsi, István AU - Dobos, Attila Csaba AU - Pusztahelyi, Tünde TI - Physiological and biochemical effects of toxigenic Aspergillus flavus on maize (Zea mays) T2 - MDPI The 3rd International Online Conference on Toxins : Program and absztract book PY - 2025 SP - 90 UR - https://m2.mtmt.hu/api/publication/36406106 ID - 36406106 AB - Aspergillus flavus is a major fungal pathogen in maize, significantly impacting kernel quality and food safety through mycotoxin contamination. This study examined the physiological and biochemical effects of A. flavus inoculation on maize, assessing kernel production, fungal proliferation, mycotoxin accumulation, and key biochemical parameters. A controlled field experiment was conducted, comparing inoculated (IN) and control (CT) maize throughout three years. Results showed that inoculated maize exhibited a significant reduction in kernel number per ear length (20.14 ? 0.43 vs. 21.25 ? 0.33; p < 0.05), indicating compromised reproductive success. Mold count was significantly higher in IN maize (6.32 ? 0.13 log CFU/g) compared to CT (5.55 ? 0.17 log CFU/g; p < 0.01), confirming enhanced fungal colonization. Aflatoxin B1 (AFB1) concentration increased drastically in IN maize (139.46 ? 38.64 ?g/kg) compared to CT (0.11 ? 0.07 ?g/kg; p < 0.01), posing serious food safety concerns. However, no significant differences were observed in fumonisin B1, deoxynivalenol, zearalenone, or starch, protein, and total polyphenols between treatments. Our results suggested that short-term fungal infection primarily affected the kernel formation, and not its biochemical composition or Fusarium mycotoxin accumulation. These findings emphasize the critical role of A. flavus in maize contamination and highlight the necessity of mitigation strategies to reduce fungal colonization and aflatoxin accumulation, ensuring maize safety and quality. LA - English DB - MTMT ER - TY - JOUR AU - Heltan, M. Mwaluqha AU - Molnár, Krisztina AU - Rácz, Csaba AU - Kovács, Szilvia AU - Adácsi, Cintia AU - Dövényi-Nagy, Tamás AU - Bakó, Károly István AU - Pócsi, István AU - Dobos, Attila Csaba AU - Pusztahelyi, Tünde TI - Physiological and biochemical responses of maize to Aspergillus flavus under irrigation and nitrogen regimes JF - POLNOHOSPODARSTVO-AGRICULTURE J2 - POLNOHOSPODARSTVO-AGRICULTURE PY - 2025 SN - 0551-3677 UR - https://m2.mtmt.hu/api/publication/36426573 ID - 36426573 LA - English DB - MTMT ER -