Community composition and methane oxidation activity of methanotrophs associated with duckweeds in a fresh water lake

• Iguchi, Hiroyuki

  Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University・Department of Agriculture and Food Technology, Faculty of Bioenvironmental Science, Kyoto University of Advanced Science

• Umeda, Ryohei

  Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University

• Taga, Hiroki

  Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University

• Oyama, Tokitaka

  Department of Botany, Graduate School of Science, Kyoto University

• Yurimoto, Hiroya

  Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University

• Sakai, Yasuyoshi

  Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University

Bibliographic Information

Other Title

• Community composition and methane oxidation activity of methanotrophs associated with duckweed in a fresh water lake

Abstract

Methanotrophs are the only biological sink of the greenhouse gas methane. To understand the ecological features of methanotrophs in association with plants in the methane emitting environments, we investigated the community composition and methane oxidation of methanotrophs associated with duckweeds in a fresh water lake. Duckweeds collected from Lake Biwa, Japan over three summers showed methane consumption activity between 0.0067 and 0.89 μmol h⁻¹ g⁻¹ (wet weight), with the highest values occurring from the end of July to August. The methanotrophic community on duckweeds consisted primarily of γ-proteobacterial groups including the genera Methylomonas and Methylocaldum. Further analysis of co-cultures of a methanotroph isolate with sterilized duckweed revealed that the duckweed plant as well as the duckweed spent culture supernatant exerted an enhancing effect on methane oxidation. These results indicate that duckweeds not only provide a habitat for methanotrophs but also stimulate methanotrophic growth.

Journal

• Journal of Bioscience and Bioengineering

  Journal of Bioscience and Bioengineering 128 (4), 450-455, 2019-10

  Elsevier B.V.

Keywords

• Methanotroph
• Duckweed
• Methane oxidation
• Methylomonas
• Spirodela

Details

• CRID: 1050845763430299776
• NII Article ID: 120006724639
• NII Book ID: AA11307678
• ISSN: 13891723
• ISSN: 13474421
• DOI: 10.1016/j.jbiosc.2019.04.009
• HANDLE: 2433/244113
• NDL BIB ID: 030015345
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030015345
• Web Site: https://api.elsevier.com/content/article/PII:S1389172318311927?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S1389172318311927?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN