High-efficiency methane capture by living fungi and dried fungal hyphae (necromass)

Feng Jin Liew, Jonathan S. Schilling

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Fungi can hasten microbial degradation of hydrophobic compounds by enhancing capture and dissolution into biofilms. For methane (CH4) released from natural soils and agricultural systems, prokaryotes are ultimately responsible for oxidation and degradation; however, in many cases Henry's law of gas dissolution, not oxidation, is rate-limiting. Given that fungi can improve capture and bioremediation of other hydrophobic compounds (e.g., toluene), we tested fungi for CH4 capture. We used a batch system of CH4–flooded vials to screen candidate fungi. We found 79% removal efficiency by Ganoderma lucidum relative to activated carbon. In a follow-up, we found comparable efficiency in other Ganoderma species (G. applanatum, G. meredithae). However, these efficiency gains by Ganoderma species could not be sustained when inoculated wood substrates were placed in “live” soils. Substrates colonized naturally, without preinoculations, performed similarly to those deployed with (native) test strains, likely because inoculated fungi were outcompeted and displaced by native colonizers. Instead of rescreening using more combative fungi, we tested an alternative way to present fungi with high single-strain efficiencies for filtration: in dried form as dead biomass (necromass). In dried biomass trials, dried G. lucidum biomass performed better than when testing living biomass, again with the highest strain-specific removal efficiencies (84% of activated carbon). These results demonstrate the potential for G. lucidum, commonly used in biomaterial production, in a variety of indoor and outdoor biofiltration scenarios. It also implies an overlooked, potentially large role for fungi and their soil necromass in capturing and reducing CH4 emissions from soils in nature.

Original languageEnglish (US)
Pages (from-to)1467-1476
Number of pages10
JournalJournal of Environmental Quality
Issue number6
StatePublished - Nov 1 2020

Bibliographical note

Publisher Copyright:
© 2020 The Authors. Journal of Environmental Quality © 2020 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America

PubMed: MeSH publication types

  • Journal Article


Dive into the research topics of 'High-efficiency methane capture by living fungi and dried fungal hyphae (necromass)'. Together they form a unique fingerprint.

Cite this