Earthworm activity in a simulated landfill cover soil shifts the community composition of active methanotrophs

Deepak Kumaresan, Marina Héry, Levente Bodrossy, Andrew C. Singer, Nancy Stralis-Pavese, Ian P. Thompson, J Colin Murrell

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Landfills represent a major source of methane in the atmosphere. In a previous study, we demonstrated that earthworm activity in landfill cover soil can increase soil methane oxidation capacity. In this study, a simulated landfill cover soil mesocosm (1 m × 0.15 m) was used to observe the influence of earthworms (Eisenia veneta) on the active methanotroph community composition, by analyzing the expression of the pmoA gene, which is responsible for methane oxidation. mRNA-based pmoA microarray analysis revealed that earthworm activity in landfill cover soil stimulated activity of type I methanotrophs (Methylobacter, Methylomonas, Methylosarcina spp.) compared to type II methanotrophs (particularly Methylocystis spp.). These results, along with previous studies of methanotrophs in landfill cover soil, can now be used to plan in situ field studies to integrate earthworm-induced methanotrophy with other landfill management practises in order to maximize soil methane oxidation and reduce methane emissions from landfills.

Original languageEnglish
Pages (from-to)1027-1032
Number of pages6
JournalResearch in Microbiology
Volume162
Issue number10
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes

Keywords

  • Earthworms
  • Landfills
  • Methanotrophs
  • PmoA microarray

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

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  • Cite this

    Kumaresan, D., Héry, M., Bodrossy, L., Singer, A. C., Stralis-Pavese, N., Thompson, I. P., & Murrell, J. C. (2011). Earthworm activity in a simulated landfill cover soil shifts the community composition of active methanotrophs. Research in Microbiology, 162(10), 1027-1032. https://doi.org/10.1016/j.resmic.2011.08.002