Unique pioneer microbial communities exposed to volcanic sulfur dioxide

Scientific Reports
Reiko FujimuraHiroyuki Ohta

Abstract

Newly exposed volcanic substrates contain negligible amounts of organic materials. Heterotrophic organisms in newly formed ecosystems require bioavailable carbon and nitrogen that are provided from CO2 and N2 fixation by pioneer microbes. However, the knowledge of initial ecosystem developmental mechanisms, especially the association between microbial succession and environmental change, is still limited. This study reports the unique process of microbial succession in fresh basaltic ash, which was affected by long-term exposure to volcanic sulfur dioxide (SO2). Here we compared the microbial ecosystems among deposits affected by SO2 exposure at different levels. The results of metagenomic analysis suggested the importance of autotrophic iron-oxidizing bacteria, particularly those involved in CO2 and N2 fixation, in the heavily SO2 affected site. Changes in the chemical properties of the deposits after the decline of the SO2 impact led to an apparent decrease in the iron-oxidizer abundance and a possible shift in the microbial community structure. Furthermore, the community structure of the deposits that had experienced lower SO2 gas levels showed higher similarity with that of the control forest soil. Our results implied that ...Continue Reading

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Citations

Feb 25, 2018·Extremophiles : Life Under Extreme Conditions·Kai-Hui LiuWen-Jun Li
Jan 31, 2019·Life·Jai A Denton, Chaitanya S Gokhale
May 29, 2020·FEMS Microbiology Ecology·Corinne Biderre-PetitRaphaël Paris
Jun 18, 2020·MSystems·Jai A Denton, Chaitanya S Gokhale
Dec 10, 2020·Scientific Reports·Hokyung SongJonathan Adams
Jun 20, 2021·Biological Reviews of the Cambridge Philosophical Society·Uara Carrillo, Verónica Díaz-Villanueva
Oct 12, 2020·Environment International·Tay Ruiz-GilMilko A Jorquera

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Datasets Mentioned

BETA
DRA001199

Methods Mentioned

BETA
lava
PCR

Software Mentioned

MetaGeneAnnotator
MG
R package vegan
Primer
BLASTN
BLAST
BLASTP
StatPlus
RAST
Primer3Plus

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