气候变化领域集成服务门户(CCPortal): Bark-dwelling methanotrophic bacteria decrease methane emissions from trees

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DOI	10.1038/s41467-021-22333-7
	Bark-dwelling methanotrophic bacteria decrease methane emissions from trees
	Jeffrey L.C.; Maher D.T.; Chiri E.; Leung P.M.; Nauer P.A.; Arndt S.K.; Tait D.R.; Greening C.; Johnston S.G.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Tree stems are an important and unconstrained source of methane, yet it is uncertain whether internal microbial controls (i.e. methanotrophy) within tree bark may reduce methane emissions. Here we demonstrate that unique microbial communities dominated by methane-oxidising bacteria (MOB) dwell within bark of Melaleuca quinquenervia, a common, invasive and globally distributed lowland species. In laboratory incubations, methane-inoculated M. quinquenervia bark mediated methane consumption (up to 96.3 µmol m−2 bark d−1) and reveal distinct isotopic δ13C-CH4 enrichment characteristic of MOB. Molecular analysis indicates unique microbial communities reside within the bark, with MOB primarily from the genus Methylomonas comprising up to 25 % of the total microbial community. Methanotroph abundance was linearly correlated to methane uptake rates (R2 = 0.76, p = 0.006). Finally, field-based methane oxidation inhibition experiments demonstrate that bark-dwelling MOB reduce methane emissions by 36 ± 5 %. These multiple complementary lines of evidence indicate that bark-dwelling MOB represent a potentially significant methane sink, and an important frontier for further research. © 2021, The Author(s).
语种	英语
scopus关键词	genomic DNA; methane; methane monooxygenase; plant DNA; ribosome RNA; surface water; methane; bacterium; inhibition; methane; methanotroph; microbial community; molecular analysis; tree; Article; carbon footprint; controlled study; geographic distribution; Melaleuca; Melaleuca quinquenervia; methanogenesis; methanotrophic bacterium; microbial community; nonhuman; oxidation reduction potential; Sphagnum; tree trunk; Verrucomicrobia; bark; carbon cycle; Melaleuca; metabolism; Methylococcaceae; microbiology; microflora; oxidation reduction reaction; physiology; tree; Melaleuca quinquenervia; Methylomonas; Carbon Cycle; Melaleuca; Methane; Methylococcaceae; Microbiota; Oxidation-Reduction; Plant Bark; Trees
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250719
作者单位	Southern Cross Geoscience, Southern Cross University, Lismore, NSW, Australia; Faculty of Science and Engineering, Southern Cross University, Lismore, NSW, Australia; Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; School of Chemistry, Monash University, Clayton, VIC, Australia; School of Ecosystem and Forest Sciences, University of Melbourne, Richmond, VIC, Australia
推荐引用方式 GB/T 7714	Jeffrey L.C.,Maher D.T.,Chiri E.,et al. Bark-dwelling methanotrophic bacteria decrease methane emissions from trees[J],2021,12(1).
APA	Jeffrey L.C..,Maher D.T..,Chiri E..,Leung P.M..,Nauer P.A..,...&Johnston S.G..(2021).Bark-dwelling methanotrophic bacteria decrease methane emissions from trees.Nature Communications,12(1).
MLA	Jeffrey L.C.,et al."Bark-dwelling methanotrophic bacteria decrease methane emissions from trees".Nature Communications 12.1(2021).