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  1. Article: The Role of Metal Ions in Fungal Organic Acid Accumulation

    Karaffa, Levente / Fekete, Erzsébet / Kubicek, Christian P.

    Microorganisms. 2021 June 10, v. 9, no. 6

    2021  

    Abstract: Organic acid accumulation is probably the best-known example of primary metabolic overflow. Both bacteria and fungi are capable of producing various organic acids in large amounts under certain conditions, but in terms of productivity-and consequently, ... ...

    Abstract Organic acid accumulation is probably the best-known example of primary metabolic overflow. Both bacteria and fungi are capable of producing various organic acids in large amounts under certain conditions, but in terms of productivity-and consequently, of commercial importance-fungal platforms are unparalleled. For high product yield, chemical composition of the growth medium is crucial in providing the necessary conditions, of which the concentrations of four of the first-row transition metal elements, manganese (Mn²⁺), iron (Fe²⁺), copper (Cu²⁺) and zinc (Zn²⁺) stand out. In this paper we critically review the biological roles of these ions, the possible biochemical and physiological consequences of their influence on the accumulation of the most important mono-, di- and tricarboxylic as well as sugar acids by fungi, and the metal ion-related aspects of submerged organic acid fermentations, including the necessary instrumental analytics. Since producing conditions are associated with a cell physiology that differs strongly to what is observed under “standard” growth conditions, here we consider papers and patents only in which organic acid accumulation levels achieved at least 60% of the theoretical maximum yield, and the actual trace metal ion concentrations were verified.
    Keywords cell physiology ; chemical composition ; copper ; culture media ; fungi ; iron ; manganese ; zinc
    Language English
    Dates of publication 2021-0610
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9061267
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Mutations in the Second Alternative Oxidase Gene: A New Approach to Group

    Flipphi, Michel / Márton, Alexandra / Bíró, Vivien / Ág, Norbert / Sándor, Erzsébet / Fekete, Erzsébet / Karaffa, Levente

    Journal of fungi (Basel, Switzerland)

    2023  Volume 9, Issue 5

    Abstract: Alternative oxidase is a terminal oxidase in the branched mitochondrial electron transport chain of most fungi ... ...

    Abstract Alternative oxidase is a terminal oxidase in the branched mitochondrial electron transport chain of most fungi including
    Language English
    Publishing date 2023-05-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2784229-0
    ISSN 2309-608X ; 2309-608X
    ISSN (online) 2309-608X
    ISSN 2309-608X
    DOI 10.3390/jof9050570
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: The Role of Metal Ions in Fungal Organic Acid Accumulation.

    Karaffa, Levente / Fekete, Erzsébet / Kubicek, Christian P

    Microorganisms

    2021  Volume 9, Issue 6

    Abstract: Organic acid accumulation is probably the best-known example of primary metabolic overflow. Both bacteria and fungi are capable of producing various organic acids in large amounts under certain conditions, but in terms of productivity-and consequently, ... ...

    Abstract Organic acid accumulation is probably the best-known example of primary metabolic overflow. Both bacteria and fungi are capable of producing various organic acids in large amounts under certain conditions, but in terms of productivity-and consequently, of commercial importance-fungal platforms are unparalleled. For high product yield, chemical composition of the growth medium is crucial in providing the necessary conditions, of which the concentrations of four of the first-row transition metal elements, manganese (Mn
    Language English
    Publishing date 2021-06-10
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9061267
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Generation, Transfer, and Loss of Alternative Oxidase Paralogues in the

    Flipphi, Michel / Márton, Alexandra / Bíró, Vivien / Ág, Norbert / Sándor, Erzsébet / Fekete, Erzsébet / Karaffa, Levente

    Journal of fungi (Basel, Switzerland)

    2023  Volume 9, Issue 12

    Abstract: Alternative oxidase (Aox) is a terminal oxidase operating in branched electron transport. The activity correlates positively with overflow metabolisms in ... ...

    Abstract Alternative oxidase (Aox) is a terminal oxidase operating in branched electron transport. The activity correlates positively with overflow metabolisms in certain
    Language English
    Publishing date 2023-12-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2784229-0
    ISSN 2309-608X ; 2309-608X
    ISSN (online) 2309-608X
    ISSN 2309-608X
    DOI 10.3390/jof9121195
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Manganese(II) ions suppress the transcription of the citrate exporter encoding gene

    Reinfurt, Aline / Fritsche, Susanne / Bíró, Vivien / Márton, Alexandra / Ellena, Valeria / Fekete, Erzsébet / Sándor, Erzsébet / Karaffa, Levente / Steiger, Matthias G

    Frontiers in bioengineering and biotechnology

    2023  Volume 11, Page(s) 1292337

    Abstract: Aspergillus ... ...

    Abstract Aspergillus niger
    Language English
    Publishing date 2023-11-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2719493-0
    ISSN 2296-4185
    ISSN 2296-4185
    DOI 10.3389/fbioe.2023.1292337
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Diaporthe and Diplodia Species Associated with Walnut (Juglans regia L.) in Hungarian Orchards

    Zabiák, Andrea / Kovács, Csilla / Takács, Ferenc / Pál, Károly / Peles, Ferenc / Fekete, Erzsébet / Karaffa, Levente / Mihaly, Kata / Flipphi, Michel / Sándor, Erzsébet

    Horticulturae. 2023 Feb. 03, v. 9, no. 2

    2023  

    Abstract: Walnut (Juglans regia L.) production is a developing sector in Hungarian horticulture, where preharvest fruit rot increasingly causes economic losses. Previously, fungi from the Diaporthaceae and Botryosphaeriaceae families were isolated with a high ... ...

    Abstract Walnut (Juglans regia L.) production is a developing sector in Hungarian horticulture, where preharvest fruit rot increasingly causes economic losses. Previously, fungi from the Diaporthaceae and Botryosphaeriaceae families were isolated with a high incidence from rotten fruits. Here, we identify these pathogens from different plant parts (twigs, buds, and shoots) in orchards in the north-east of Hungary, and test their pathogenicity on immature nuts. Diaporthe eres Nitschke and Diplodia seriata De Notaris were identified in isolates from different symptomatic and asymptomatic plant parts based on their ITS (nuclear ribosomal internal transcribed spacer) and tef1 (translation elongation factor EF-1-alpha gene) DNA sequences. Purified monocultures caused rot of immature nuts following in vitro inoculation. Our results suggest that D. eres Nitschke and D. seriata De Notaris lingering on buds and overwintering woody parts may affect the seasonal nuts through wound infection. Infection by Diaporthe and Botryosphaeriaceae species present on woody plant parts, as well as on/in buds has been reported in Mediterranean countries. This is the first report of such stepwise aetiology from a region with continental weather. Climate change, associated weather patterns and the limitations of fungicide use in the European Union, among other factors, could be responsible for the increasing number of infections and economic damage caused by these pathogens.
    Keywords DNA ; Diaporthe ; Diplodia seriata ; European Union ; Juglans regia ; climate change ; etiology ; fungicides ; genes ; horticulture ; internal transcribed spacers ; overwintering ; pathogenicity ; peptide elongation factors ; plant rots ; walnuts ; weather ; woody plants ; Hungary
    Language English
    Dates of publication 2023-0203
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2813983-5
    ISSN 2311-7524
    ISSN 2311-7524
    DOI 10.3390/horticulturae9020205
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Internally Symmetrical Stwintrons and Related Canonical Introns in Hypoxylaceae Species.

    Fekete, Erzsébet / Pénzes, Fruzsina / Ág, Norbert / Scazzocchio, Claudio / Flipphi, Michel / Karaffa, Levente

    Journal of fungi (Basel, Switzerland)

    2021  Volume 7, Issue 9

    Abstract: Spliceosomal introns are pervasive in eukaryotes. Intron gains and losses have occurred throughout evolution, but the origin of new introns is unclear. Stwintrons are complex intervening sequences where one of the sequence elements (5'-donor, lariat ... ...

    Abstract Spliceosomal introns are pervasive in eukaryotes. Intron gains and losses have occurred throughout evolution, but the origin of new introns is unclear. Stwintrons are complex intervening sequences where one of the sequence elements (5'-donor, lariat branch point element or 3'-acceptor) necessary for excision of a U2 intron (external intron) is itself interrupted by a second (internal) U2 intron. In Hypoxylaceae, a family of endophytic fungi, we uncovered scores of donor-disrupted stwintrons with striking sequence similarity among themselves and also with canonical introns. Intron-exon structure comparisons suggest that these stwintrons have proliferated within diverging taxa but also give rise to proliferating canonical introns in some genomes. The proliferated (stw)introns have integrated seamlessly at novel gene positions. The recently proliferated (stw)introns appear to originate from a conserved ancestral stwintron characterised by terminal inverted repeats (45-55 nucleotides), a highly symmetrical structure that may allow the formation of a double-stranded intron RNA molecule. No short tandem duplications flank the putatively inserted intervening sequences, which excludes a DNA transposition-based mechanism of proliferation. It is tempting to suggest that this highly symmetrical structure may have a role in intron proliferation by (an)other mechanism(s).
    Language English
    Publishing date 2021-08-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2784229-0
    ISSN 2309-608X ; 2309-608X
    ISSN (online) 2309-608X
    ISSN 2309-608X
    DOI 10.3390/jof7090710
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: The Biocontrol Potential of Endophytic Trichoderma Fungi Isolated from Hungarian Grapevines. Part I. Isolation, Identification and In Vitro Studies

    Kovács, Csilla / Csótó, András / Pál, Károly / Nagy, Antal / Fekete, Erzsébet / Karaffa, Levente / Kubicek, Christian P. / Sándor, Erzsébet

    Pathogens. 2021 Dec. 10, v. 10, no. 12

    2021  

    Abstract: This paper reports on the identification and in vitro characterization of several Trichoderma strains isolated from the Tokaj Wine Region in North-East Hungary. Ten isolates were analyzed and found to consist of six individual species—T. gamsii, T. ... ...

    Abstract This paper reports on the identification and in vitro characterization of several Trichoderma strains isolated from the Tokaj Wine Region in North-East Hungary. Ten isolates were analyzed and found to consist of six individual species—T. gamsii, T. orientale, T. simmonsii, T. afroharzianum, T. atrobrunneum and T. harzianum sensu stricto. The growth potential of the strains was assessed at a range of temperatures. We also report here on the in vitro biocontrol properties and fungicide tolerance of the most promising strains.
    Keywords biological control ; endophytes ; fungicide resistance ; wines ; Hungary
    Language English
    Dates of publication 2021-1210
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens10121612
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: The Biocontrol Potential of Endophytic

    Csótó, András / Kovács, Csilla / Pál, Károly / Nagy, Antal / Peles, Ferenc / Fekete, Erzsébet / Karaffa, Levente / Kubicek, Christian P / Sándor, Erzsébet

    Pathogens (Basel, Switzerland)

    2022  Volume 12, Issue 1

    Abstract: In the first part of this two-piece publication, the isolation, identification and in vitro characterization of ten ... ...

    Abstract In the first part of this two-piece publication, the isolation, identification and in vitro characterization of ten endophytic
    Language English
    Publishing date 2022-12-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens12010002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Unique and Repeated Stwintrons (Spliceosomal Twin Introns) in the Hypoxylaceae.

    Fekete, Erzsébet / Pénzes, Fruzsina / Ág, Norbert / Ág-Rácz, Viktória / Sándor, Erzsébet / Scazzocchio, Claudio / Flipphi, Michel / Karaffa, Levente

    Journal of fungi (Basel, Switzerland)

    2022  Volume 8, Issue 4

    Abstract: Introns are usually non-coding sequences interrupting open reading frames in pre-mRNAs [D1,2]. Stwintrons are nested spliceosomal introns, where an internal intron splits a second donor sequence into two consecutive splicing reactions leading to mature ... ...

    Abstract Introns are usually non-coding sequences interrupting open reading frames in pre-mRNAs [D1,2]. Stwintrons are nested spliceosomal introns, where an internal intron splits a second donor sequence into two consecutive splicing reactions leading to mature mRNA. In
    Language English
    Publishing date 2022-04-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2784229-0
    ISSN 2309-608X ; 2309-608X
    ISSN (online) 2309-608X
    ISSN 2309-608X
    DOI 10.3390/jof8040397
    Database MEDical Literature Analysis and Retrieval System OnLINE

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