@article{MTMT:37009918,
	title = {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},
	url = {https://m2.mtmt.hu/api/publication/37009918},
	author = {Rácz, Csaba and Molnár, Krisztina and Dövényi-Nagy, Tamás and Bakó, Károly István and Kathy, István and Szepsy, István and Csige, László and Dobos, Attila Csaba},
	doi = {10.3390/agronomy16060594},
	journal-iso = {AGRONOMY-BASEL},
	journal = {AGRONOMY (BASEL)},
	volume = {16},
	unique-id = {37009918},
	abstract = {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.},
	year = {2026},
	eissn = {2073-4395},
	orcid-numbers = {Rácz, Csaba/0000-0002-0307-6508; Molnár, Krisztina/0000-0001-6203-6154; Dobos, Attila Csaba/0000-0001-7904-2155}
}

@article{MTMT:36075800,
	title = {Irrigation, Nitrogen Supplementation, and Climatic Conditions Affect Resistance to Aspergillus flavus Stress in Maize},
	url = {https://m2.mtmt.hu/api/publication/36075800},
	author = {Mwalugha, Heltan M. and Molnár, Krisztina and Rácz, Csaba and Kovács, Szilvia and Adácsi, Cintia and Dövényi-Nagy, Tamás and Bakó, Károly István and Pócsi, István and Dobos, Attila Csaba and Pusztahelyi, Tünde},
	doi = {10.3390/agriculture15070767},
	journal-iso = {AGRICULTURE-BASEL},
	journal = {AGRICULTURE-BASEL},
	volume = {15},
	unique-id = {36075800},
	abstract = {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.},
	keywords = {MAIZE; Nitrogen; climate change; Aspergillus flavus; Irrigation; PLANT PHYSIOLOGY; Aflatoxin B1},
	year = {2025},
	eissn = {2077-0472},
	orcid-numbers = {Mwalugha, Heltan M./0009-0006-2353-9510; Molnár, Krisztina/0000-0001-6203-6154; Rácz, Csaba/0000-0002-0307-6508; Dobos, Attila Csaba/0000-0001-7904-2155; Pusztahelyi, Tünde/0000-0002-5495-6273}
}

@CONFERENCE{MTMT:36406106,
	title = {Physiological and biochemical effects of toxigenic Aspergillus flavus on maize (Zea mays)},
	url = {https://m2.mtmt.hu/api/publication/36406106},
	author = {Mwalugha, Heltan M. and Molnár, Krisztina and Rácz, Csaba and Kovács, Szilvia and Adácsi, Cintia and Dövényi-Nagy, Tamás and Bakó, Károly István and Pócsi, István and Dobos, Attila Csaba and Pusztahelyi, Tünde},
	booktitle = {MDPI The 3rd International Online Conference on Toxins : Program and absztract book},
	unique-id = {36406106},
	abstract = {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.},
	year = {2025},
	pages = {90},
	orcid-numbers = {Molnár, Krisztina/0000-0001-6203-6154; Rácz, Csaba/0000-0002-0307-6508; Dobos, Attila Csaba/0000-0001-7904-2155; Pusztahelyi, Tünde/0000-0002-5495-6273}
}

@article{MTMT:36426573,
	title = {Physiological and biochemical responses of maize to Aspergillus flavus under irrigation and nitrogen regimes},
	url = {https://m2.mtmt.hu/api/publication/36426573},
	author = {Heltan, M. Mwaluqha and Molnár, Krisztina and Rácz, Csaba and Kovács, Szilvia and Adácsi, Cintia and Dövényi-Nagy, Tamás and Bakó, Károly István and Pócsi, István and Dobos, Attila Csaba and Pusztahelyi, Tünde},
	journal-iso = {POLNOHOSPODARSTVO-AGRICULTURE},
	journal = {POLNOHOSPODARSTVO-AGRICULTURE},
	unique-id = {36426573},
	issn = {0551-3677},
	year = {2025},
	eissn = {1338-4376},
	orcid-numbers = {Molnár, Krisztina/0000-0001-6203-6154; Rácz, Csaba/0000-0002-0307-6508; Dobos, Attila Csaba/0000-0001-7904-2155; Pusztahelyi, Tünde/0000-0002-5495-6273}
}

@CONFERENCE{MTMT:36860946,
	title = {Biocontrol of aflatoxin B1 mycotoxin production under drought stress},
	url = {https://m2.mtmt.hu/api/publication/36860946},
	author = {Pusztahelyi, Tünde and Heltan, W. Mwalugha and Kovács, Szilvia and Molnár, Krisztina and Dobos, Attila Csaba},
	booktitle = {8th Conference on Cereal Biotechnology and Breeding - CBB8 2025 - 19th EWAC – The European Cereals Genetics Co-operative Conference - EWAC19 2025},
	unique-id = {36860946},
	year = {2025},
	pages = {61},
	orcid-numbers = {Pusztahelyi, Tünde/0000-0002-5495-6273; Molnár, Krisztina/0000-0001-6203-6154; Dobos, Attila Csaba/0000-0001-7904-2155}
}

@article{MTMT:36871369,
	title = {Correction: Mwalugha et al. Irrigation, Nitrogen Supplementation, and Climatic Conditions Affect Resistance to Aspergillus flavus Stress in Maize. Agriculture 2025, 15, 767},
	url = {https://m2.mtmt.hu/api/publication/36871369},
	author = {Mwalugha, Heltan M. and Molnár, Krisztina and Rácz, Csaba and Kovács, Szilvia and Adácsi, Cintia and Dövényi-Nagy, Tamás and Bakó, Károly István and Pócsi, István and Dobos, Attila Csaba and Pusztahelyi, Tünde},
	doi = {10.3390/agriculture15242545},
	journal-iso = {AGRICULTURE-BASEL},
	journal = {AGRICULTURE-BASEL},
	volume = {15},
	unique-id = {36871369},
	abstract = {In the original publication [...]},
	year = {2025},
	eissn = {2077-0472},
	orcid-numbers = {Mwalugha, Heltan M./0009-0006-2353-9510; Molnár, Krisztina/0000-0001-6203-6154; Rácz, Csaba/0000-0002-0307-6508; Dobos, Attila Csaba/0000-0001-7904-2155; Pusztahelyi, Tünde/0000-0002-5495-6273}
}

@CONFERENCE{MTMT:36919533,
	title = {Characterisation Of Endemic Aspergillus Flavus Strains in In Vitro And Microplot Field Experiments},
	url = {https://m2.mtmt.hu/api/publication/36919533},
	author = {Pusztahelyi, Tünde and Kovács, Szilvia and Mwalungha, M. Heltan and Molnár, Krisztina and Dobos, Attila Csaba and Pfliegler, Valter Péter and Pócsi, István},
	booktitle = {ABSTRACTS of the 7th Central European Forum for Microbiology},
	unique-id = {36919533},
	year = {2025},
	pages = {67},
	orcid-numbers = {Pusztahelyi, Tünde/0000-0002-5495-6273; Molnár, Krisztina/0000-0001-6203-6154; Dobos, Attila Csaba/0000-0001-7904-2155; Pfliegler, Valter Péter/0000-0001-6723-4416}
}

@CONFERENCE{MTMT:36927669,
	title = {Competitive exclusion of aspergillus flavus: evaluation of in vitro and microplot field experiments},
	url = {https://m2.mtmt.hu/api/publication/36927669},
	author = {Pusztahelyi, Tünde and Heltan, M. Mwalugha and Molnár, Krisztina and Kovács, Szilvia and Adácsi, Cintia and Pócsi, István and Pfliegler, Valter Péter and Dobos, Attila Csaba},
	booktitle = {Biotechnology at the University of Debrecen - 2025 International Symposium : Abstract Book},
	unique-id = {36927669},
	year = {2025},
	pages = {20},
	orcid-numbers = {Pusztahelyi, Tünde/0000-0002-5495-6273; Molnár, Krisztina/0000-0001-6203-6154; Pfliegler, Valter Péter/0000-0001-6723-4416; Dobos, Attila Csaba/0000-0001-7904-2155}
}

@article{MTMT:34832088,
	title = {Exploring the interplay between the core microbiota, physicochemical factors, agrobiochemical cycles in the soil of the historic tokaj mád wine region},
	url = {https://m2.mtmt.hu/api/publication/34832088},
	author = {Gálné Remenyik, Judit and Csige, László and Dávid, Péter and Fauszt, Péter and Szilágyi-Rácz, Anna Anita and Szőllősi, Erzsébet and Bacsó, Zsófia Réka and Szepsy Jnr, István and Molnár, Krisztina and Rácz, Csaba and Fidler, Gábor and Kállai, Zoltán and Stündl, László and Dobos, Attila Csaba and Paholcsek, Melinda},
	doi = {10.1371/journal.pone.0300563},
	journal-iso = {PLOS ONE},
	journal = {PLOS ONE},
	volume = {19},
	unique-id = {34832088},
	abstract = {A Hungarian survey of Tokaj-Mád vineyards was conducted. Shotgun metabarcoding was applied to decipher the microbial-terroir. The results of 60 soil samples showed that there were three dominant fungal phyla, Ascomycota 66.36% ± 15.26%, Basidiomycota 18.78% ± 14.90%, Mucoromycota 11.89% ± 8.99%, representing 97% of operational taxonomic units (OTUs). Mutual interactions between microbiota diversity and soil physicochemical parameters were revealed. Principal component analysis showed descriptive clustering patterns of microbial taxonomy and resistance gene profiles in the case of the four historic vineyards (Szent Tamás, Király, Betsek, Nyúlászó). Linear discriminant analysis effect size was performed, revealing pronounced shifts in community taxonomy based on soil physicochemical properties. Twelve clades exhibited the most significant shifts (LDA > 4.0), including the phyla Verrucomicrobia , Bacteroidetes , Chloroflexi , and Rokubacteria , the classes Acidobacteria , Deltaproteobacteria , Gemmatimonadetes , and Betaproteobacteria , the order Sphingomonadales , Hypomicrobiales , as well as the family Sphingomonadaceae and the genus Sphingomonas . Three out of the four historic vineyards exhibited the highest occurrences of the bacterial genus Bradyrhizobium , known for its positive influence on plant development and physiology through the secretion of steroid phytohormones. During ripening, the taxonomical composition of the soil fungal microbiota clustered into distinct groups depending on altitude, differences that were not reflected in bacteriomes. Network analyses were performed to unravel changes in fungal interactiomes when comparing postveraison and preharvest samples. In addition to the arbuscular mycorrhiza Glomeraceae , the families Mycosphaerellacae and Rhyzopodaceae and the class Agaricomycetes were found to have important roles in maintaining soil microbial community resilience. Functional metagenomics showed that the soil Na content stimulated several of the microbiota-related agrobiogeochemical cycles, such as nitrogen and sulphur metabolism; steroid, bisphenol, toluene, dioxin and atrazine degradation and the synthesis of folate.},
	year = {2024},
	eissn = {1932-6203},
	orcid-numbers = {Szilágyi-Rácz, Anna Anita/0000-0003-3612-3574; Molnár, Krisztina/0000-0001-6203-6154; Rácz, Csaba/0000-0002-0307-6508; Dobos, Attila Csaba/0000-0001-7904-2155}
}

@article{MTMT:33705114,
	title = {The Effect of Environmental Factors on Mould Counts and AFB1 Toxin Production by Aspergillus flavus in Maize},
	url = {https://m2.mtmt.hu/api/publication/33705114},
	author = {Molnár, Krisztina and Rácz, Csaba and Dövényi-Nagy, Tamás and Bakó, Károly István and Pusztahelyi, Tünde and Kovács, Szilvia and Adácsi, Cintia and Pócsi, István and Dobos, Attila Csaba},
	doi = {10.3390/toxins15030227},
	journal-iso = {TOXINS},
	journal = {TOXINS},
	volume = {15},
	unique-id = {33705114},
	issn = {2072-6651},
	abstract = {The toxins produced by Aspergillus flavus can significantly inhibit the use of maize. As a result of climate change, toxin production is a problem not only in tropical and subtropical areas but in an increasing number of European countries, including Hungary. The effect of meteorological factors and irrigation on mould colonization and aflatoxin B1 (AFB1) mycotoxin production by A. flavus were investigated in natural conditions, as well as the inoculation with a toxigenic isolate in a complex field experiment for three years. As a result of irrigation, the occurrence of fungi increased, and toxin production decreased. The mould count of fungi and toxin accumulation showed differences during the examined growing seasons. The highest AFB1 content was found in 2021. The main environmental factors in predicting mould count were temperature (Tavg, Tmax ≥ 30 °C, Tmax ≥ 32 °C, Tmax ≥ 35 °C) and atmospheric drought (RHmin ≤ 40%). Toxin production was determined by extremely high daily maximum temperatures (Tmax ≥ 35 °C). At natural contamination, the effect of Tmax ≥ 35 °C on AFB1 was maximal (r = 0.560–0.569) in the R4 stage. In the case of artificial inoculation, correlations with environmental factors were stronger (r = 0.665–0.834) during the R2–R6 stages.},
	year = {2023},
	eissn = {2072-6651},
	orcid-numbers = {Molnár, Krisztina/0000-0001-6203-6154; Rácz, Csaba/0000-0002-0307-6508; Pusztahelyi, Tünde/0000-0002-5495-6273; Dobos, Attila Csaba/0000-0001-7904-2155}
}