Presence and transcriptional activity of anaerobic fungi and agricultural biogas plants

Awduron Sefydliadau
  • Veronika Dollhofer(Awdur)
    Bavarian State Research Center for Agriculture
  • Tony M. Callaghan(Awdur)
    Bavarian State Research Center for Agriculture
  • Gareth Griffith(Awdur)
  • Michael Lebuhn(Awdur)
    Bavarian State Research Center for Agriculture
  • Johann Bauer(Awdur)
    WZW Science Center for Nutrition
Math Erthygl
Iaith wreiddiolSaesneg
Tudalennau (o-i)131-139
Nifer y tudalennau9
CyfnodolynBioresource Technology
Cyfrol235
Dyddiad ar-lein cynnar22 Maw 2017
Dangosyddion eitem ddigidol (DOIs)
StatwsCyhoeddwyd - 01 Gorff 2017
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Bioaugmentation with anaerobic fungi (AF2) is promising for improved biogas generation from lignocelluloses-rich substrates. However, before implementing AF into biogas processes it is necessary to investigate their natural occurrence, community structure and transcriptional activity in agricultural biogas plants. Thus, AF were detected with three specific PCR based methods: (i) Copies of their 18S genes were found in 7 of 10 biogas plants. (ii) transcripts of a GH5 endoglucanase gene were present at low level in two digesters, indicating transcriptional cellulolytic activity of AF. (iii) Phylogeny of the AF-community was inferred with the 28S gene. A new Piromyces species was isolated from a PCR-positive digester.

Evidence for AF was only found in biogas plants operated with high proportions of animal feces. Thus, AF were most likely transferred into digesters with animal derived substrates. Additionally, high process temperatures in combination with long retention times seemed to impede AF survival and activity

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