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Title: | Community composition and methane oxidation activity of methanotrophs associated with duckweeds in a fresh water lake |
Authors: | Iguchi, Hiroyuki Umeda, Ryohei Taga, Hiroki Oyama, Tokitaka ![]() ![]() Yurimoto, Hiroya ![]() ![]() ![]() Sakai, Yasuyoshi ![]() ![]() |
Author's alias: | 井口, 博之 多賀, 洋輝 小山, 時隆 由里本, 博也 阪井, 康能 |
Keywords: | Methanotroph Duckweed Methane oxidation Methylomonas Spirodela |
Issue Date: | Oct-2019 |
Publisher: | Elsevier B.V. |
Journal title: | Journal of Bioscience and Bioengineering |
Volume: | 128 |
Issue: | 4 |
Start page: | 450 |
End page: | 455 |
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. |
Rights: | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ The full-text file will be made open to the public on 1 October 2020 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/244113 |
DOI(Published Version): | 10.1016/j.jbiosc.2019.04.009 |
PubMed ID: | 31104899 |
Appears in Collections: | Journal Articles |

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