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Presence and transcriptional activity of anaerobic fungi in agricultural biogas plants.

Abstract：

:Bioaugmentation with anaerobic fungi (AF) 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.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Dollhofer V,Callaghan TM,Griffith GW,Lebuhn M,Bauer J

doi

10.1016/j.biortech.2017.03.116

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

131-139

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(17)30397-8

journal_volume

235

pub_type

杂志文章

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