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001-es BibID:	BIBFORM131289
Első szerző:	Ács-Szabó Lajos (biológus)
Cím:	Striking mycotoxin tolerance and zearalenone elimination capacity of the decaying wood associated yeast Sugiyamaella novakii (Trichomonascaceae). / Lajos Acs-Szabo, Walter P. Pfliegler, Szilvia Kovács, Cintia Adácsi, Hanna V. Rácz, Enikő Horváth, László A. Papp, Katalin Pappné Murvai, Szabina Király, Ida Miklós, Gábor Péter, Tünde Pusztahelyi, István Pócsi
Dátum:	2025
ISSN:	1471-2180
Megjegyzések:	Background Mycotoxin-producing fungal species and their mycotoxins pose a global threat for crop production and for human and animal health. Given the increasing demand for healthier food and feed, alternative non-pesticide approaches for reducing fungal infections in crops and eliminating mycotoxin contamination in feedstock are becoming more prevalent. For such purposes, yeast species can be good candidates. Thus, the present study examined the mycotoxin tolerance and mycotoxin elimination ability of several yeast strains belonging to the Trichomonascaceae family. Results While none of the tested yeasts inhibited the growth of different Fusarium species, several yeast strains exhibited tolerance to Fusarium mycotoxins such as deoxynivalenol, zearalenone, T-2 toxin, and fumonisin B1. Sugiyamaella novakii strains displayed exceptional tolerance for the tested mycotoxins. Besides, phylogenetic analyses suggested that tolerant species clustered more closely to each other than to the sensitive species. Although whole genome sequencing of S. novakii NCAIM Y.00986 revealed several enzyme-coding genes that may have a role in mycotoxin elimination, significant mycotoxin elimination was not achieved in the case of deoxynivalenol, T-2 toxin, and fumonisin B1. However, S. novakii successfully eliminated zearalenone, likely due to cell wall adsorption rather than enzymatic degradation. Conclusions This study highlights the potential of S. novakii for zearalenone detoxification and emphasizes the role of yeast cell walls in mycotoxin mitigation strategies.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Sugiyamaella Trichomonascaceae Fusarium yeast Mycotoxin Genomics Cell wall
Megjelenés:	Bmc Microbiology. - 25 : 1 (2025), p. 1-13. -
További szerzők:	Pfliegler Valter Péter (1986-) (molekuláris biológus) Kovács Szilvia (1982-) (biológus) Adácsi Cintia (1990-) (táplálkozástudományi szakember) Rácz Hanna Viktória (1994-) (biológus) Horváth Enikő (1987-) (biológus) Papp László Attila (1986-) (genetikus) Murvai Katalin Király Szabina (1996-) (biológus) Miklós Ida (1962-) (biológus) Péter Gábor Pusztahelyi Tünde (1969-) (biológus, angol-magyar szakfordító) Pócsi István (1961-) (vegyész)
Pályázati támogatás:	2019-2.1.13-TÉT_IN-2020-00056 Egyéb TKP2021-NKTA-32 Egyéb TKP2021-EGA-18 Egyéb University of Debrecen Program for Scientific Publication Egyéb
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001-es BibID:	BIBFORM094639
035-os BibID:	(Scopus)85093067824 (WoS)000585105200001
Első szerző:	Horváth Enikő (biológus)
Cím:	Assaying the effect of yeasts on growth of fungi associated with disease / Horváth Enikő, Sipiczki Mátyás, Csoma Hajnalka, Miklós Ida
Dátum:	2020
ISSN:	1471-2180
Megjegyzések:	Abstract Background: Pathogenic fungi often cause serious infections mainly in immunocompromised persons. The number of infections caused by the non-albicans Candida or other species has significantly increased over the last years. These infections present a major challenge in the health sector because these pathogenic fungi have strong virulence and often show resistance to the commonly used antifungal treatments. To solve the problems caused by the drug resistant pathogenic fungi, it is necessary to find new antifungal agents and their sources. The aim of this study was to give evidence that yeasts can effectively fight against strains which belong to pathogenic fungi and reveal those yeasts which are able to inhibit growth of Kodamaea ohmeri, Pichia kudriavzevii, Naganishia albida or Candida tropicalis. Furthermore, we wanted to determine the effects of certain culturing factors on the growth inhibition. Results: Our screening revealed that although the strains belonging to pathogenic species were much more tolerant to the yeast-produced bioactive agents than the non-disease-associated yeasts, growth of Kodamaea ohmeri and Candida tropicalis could be inhibited by Metschnikowia andauensis, while Naganishia albida could be controlled by Pichia anomala or Candida tropicalis. Our data proved that the experimental circumstances could have a serious impact on the inhibitory capacity of the yeasts. Appearance of inhibition strongly depended on media, pH and temperature. Our data also shed some light on the fact that Pichia kudriavzevii must have high natural resistance to the yeast-produced agents, while other species, such as Saccharomycopsis crataegensis belonged to the easily inhibitable species. Conclusions: Our study suggests that yeast-produced bioactive agents could be potential growth inhibitory agents against the disease-associated fungi and yeasts can also contribute to alternative approaches to combat against pathogenic fungi. Our data revealed an important role of the culturing factors in inhibition and pointed to the complex nature of antagonism.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Disease-associated fungi Bioactive agents Yeast Antagonism Metschnikowia sp. Non-albicans Candida species Natural resistance
Megjelenés:	Bmc Microbiology. - 20 : 320 (2020), p. 1-10. -
További szerzők:	Sipiczki Mátyás (1948-) (biológus) Csoma Hajnalka (1979-) (biológus, szőlész-borász) Miklós Ida (1962-) (biológus)
Pályázati támogatás:	EFOP-3.6.1-16-2016-00022 EFOP FIK-20428-3/2018 Egyéb
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001-es BibID:	BIBFORM124137
035-os BibID:	(WoS)001312795800001 (Scopus)85203687313
Első szerző:	Murvai Katalin
Cím:	The bacterial and yeast microbiota in livestock forages in Hungary / Katalin Pappné Murvai, Hanna Viktória Rácz, Enikő Horváth, Bálint Németh, Alexandra Imre, Kadmiel Naliel Oliveira Pereira, Zsuzsa Antunovics, Ferenc Peles, Péter Sipos, Béla Béri, Tünde Pusztahelyi, István Pócsi, Walter P. Pfliegler
Dátum:	2024
ISSN:	1471-2180
Megjegyzések:	Background Along bacteria, yeasts are common in forages and forage fermentations as spoilage microbes or as additives, yet few studies exist with species-level data on these fungi's occurrence in feedstuff. Active dry yeast and other yeast-based products are also common feed additives in animal husbandry. Here, we aimed to characterize both fermented and non-fermented milking cow feedstuff samples from Hungary to assess their microbial diversity in the first such study from Central Europe. Results We applied long-read bacterial metabarcoding to 10 fermented and 25 non-fermented types of samples to assess bacterial communities and their characteristics, surveyed culturable mold and yeast abundance, and identified culturable yeast species. Fermented forages showed the abundance of Aerococcaceae, Bacillaceae, Brucellaceae, Lactobacillaceae, Staphylococcaceae, and Thermoactinomycetaceae, non-fermented ones had Cyanothecaceae, Enterobacteriaceae, Erwiniaceae, Gomontiellaceae, Oxalobacteraceae, Rhodobiaceae, Rickettsiaceae, and Staphylococcaceae. Abundances of bacterial families showed mostly weak correlation with yeast CFU numbers, only Microcoleaceae (positive) and Enterococcaceae and Alcaligenaceae (negative correlation) showed moderate correlation. We identified 14 yeast species, most commonly Diutina rugosa, Pichia fermentans, P. kudriavzevii, and Wickerhahomyces anomalus. We recorded S. cerevisiae isolates only from animal feed mixes with added active dry yeast, while the species was completely absent from fermented forages. The S. cerevisiae isolates showed high genetic uniformity. Conclusion Our results show that both fermented and non-fermented forages harbor diverse bacterial microbiota, with higher alpha diversity in the latter. The bacterial microbiome had an overall weak correlation with yeast abundance, but yeasts were present in the majority of the samples, including four new records for forages as a habitat for yeasts. Yeasts in forages mostly represented common species including opportunistic pathogens, along with a single strain of Saccharomyces used as a feed mix additive.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Saccharomyces Silage Mycobiome Yeast diversity
Megjelenés:	BMC Microbiology. - 24 : 1 (2024), p. 1-11. -
További szerzők:	Rácz Hanna Viktória (1994-) (biológus) Horváth Enikő (1987-) (biológus) Németh Bálint (1999-) (mikrobiológia) Imre Alexandra (1992-) (biomérnök, biotechnológus) Pereira, Kadmiel Naliel Oliveira Antunovics Zsuzsa (1978-) (molekuláris biológus, genetikus) Peles Ferenc (1979-) (mikrobiológia, élelmiszer-mikrobiológia, minőségügy) Sipos Péter (1975-) (agrármérnök) Béri Béla (1951-) (agrármérnök) Pusztahelyi Tünde (1969-) (biológus, angol-magyar szakfordító) Pócsi István (1961-) (vegyész) Pfliegler Valter Péter (1986-) (molekuláris biológus)
Pályázati támogatás:	FK 138910 Egyéb 2018?1.2.1-NKP-2018-00002 Egyéb BO/00227/20/8 Egyéb ÚNKP-22-5-DE-409 Egyéb ÚNKP22-3-II-DE-187 Egyéb
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