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- Title
Characterization of natural co-cultures of Piromyces with Methanobrevibacter ruminantium from yaks grazing on the Qinghai-Tibetan Plateau: a microbial consortium with high potential in plant biomass degradation.
- Authors
Wei, Ya-Qin; Yang, Hong-Jian; Long, Rui-Jun; Wang, Zhi-Ye; Cao, Bin-Bin; Ren, Qin-Chang; Wu, Tian-Tian
- Abstract
Anaerobic fungi reside in the gut of herbivore and synergize with associated methanogenic archaea to decompose ingested plant biomass. Despite their potential for use in bioconversion industry, only a few natural fungus-methanogen co-cultures have been isolated and characterized. In this study we identified three co-cultures of Piromyces with Methanobrevibacter ruminantium from the rumen of yaks grazing on the Qinghai Tibetan Plateau. The representative co-culture, namely ( Piromyces + M. ruminantium) Yak-G18, showed remarkable polysaccharide hydrolase production, especially xylanase. Consequently, it was able to degrade various lignocellulose substrates with a biodegrading capability superior to most previously identified fungus or fungus-methanogen co-culture isolates. End-product profiling analysis validated the beneficial metabolic impact of associated methanogen on fungus as revealed by high-yield production of methane and acetate and sustained growth on lignocellulose. Together, our data demonstrated a great potential of ( Piromyces + M. ruminantium) Yak-G18 co-culture for use in industrial bioconversion of lignocellulosic biomass.
- Subjects
YAK; ANAEROBIC fungi; HERBIVORES; METHANOGENS; LIGNOCELLULOSE; BIOCONVERSION
- Publication
AMB Express, 2017, Vol 7, Issue 1, p1
- ISSN
2191-0855
- Publication type
Article
- DOI
10.1186/s13568-017-0459-1