TY - JOUR
T1 - The assembly of methanotrophic communities regulated by soil pH in a mountain ecosystem
AU - Li, Chaonan
AU - Tu, Bo
AU - Kou, Yongping
AU - Wang, Yansu
AU - Li, Xiangzhen
AU - Wang, Junming
AU - Li, Jiabao
N1 - Funding Information:
This study was supported by the National Natural Science Foundation of China [ 31870473 , 41630751 , 41601253 , 31570496 ], China Biodiversity Observation Networks [Sino BON], and Chinese Academy of Sciences [ XXH13503-03-106 , XDB15010303 ]. Opinions expressed are those of the authors and not necessarily those of the Illinois State Water Survey, the Prairie Research Institute, the University of Illinois. We appreciate the excellent editing work by Lisa Sheppard.
Funding Information:
This study was supported by the National Natural Science Foundation of China [31870473, 41630751, 41601253, 31570496], China Biodiversity Observation Networks [Sino BON], and Chinese Academy of Sciences [XXH13503-03-106, XDB15010303]. Opinions expressed are those of the authors and not necessarily those of the Illinois State Water Survey, the Prairie Research Institute, the University of Illinois. We appreciate the excellent editing work by Lisa Sheppard.
PY - 2021/1
Y1 - 2021/1
N2 - Methane oxidation driven by aerobic methanotrophs plays a critical role in the alleviation of global warming. Yet, we still know little about the assembly mechanisms of methanotrophic communities and the corresponding drivers in mountain soils. Here, we comprehensively investigated methanotrophic bacteria along an elevational gradient (1800–4100 m) in Mount Gongga, China. Our results indicated that previously unrecognized AOB-rel methanotrophs predominated in mountain forest soils, and they showed distinct phylogenetic differentiation and pH preferences (pH 5.9–7.2 and pH 4.7–5.6 for AOB-rel subclade 1 and 2, respectively). Soil pH, temperature and precipitation primarily shaped methanotrophic communities. The community assembly of aerobic methanotrophs was governed mainly by deterministic processes. Our findings also implied that more acidic soils contained less phylogenetically clustered methanotrophic communities, and more neutral soils harbored more phylogenetically clustered communities. This study is the first to illustrate the significant role of soil pH in the assembly of aerobic methanotrophic communities and reinforce the importance of AOB-rel methanotrophs in atmospheric methane oxidation process in mountain forest soils.
AB - Methane oxidation driven by aerobic methanotrophs plays a critical role in the alleviation of global warming. Yet, we still know little about the assembly mechanisms of methanotrophic communities and the corresponding drivers in mountain soils. Here, we comprehensively investigated methanotrophic bacteria along an elevational gradient (1800–4100 m) in Mount Gongga, China. Our results indicated that previously unrecognized AOB-rel methanotrophs predominated in mountain forest soils, and they showed distinct phylogenetic differentiation and pH preferences (pH 5.9–7.2 and pH 4.7–5.6 for AOB-rel subclade 1 and 2, respectively). Soil pH, temperature and precipitation primarily shaped methanotrophic communities. The community assembly of aerobic methanotrophs was governed mainly by deterministic processes. Our findings also implied that more acidic soils contained less phylogenetically clustered methanotrophic communities, and more neutral soils harbored more phylogenetically clustered communities. This study is the first to illustrate the significant role of soil pH in the assembly of aerobic methanotrophic communities and reinforce the importance of AOB-rel methanotrophs in atmospheric methane oxidation process in mountain forest soils.
KW - AOB-rel methanotrophs
KW - Community assembly
KW - Elevational gradient
KW - Methane oxidation bacteria
KW - Mount Gongga
KW - ISWS
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U2 - 10.1016/j.catena.2020.104883
DO - 10.1016/j.catena.2020.104883
M3 - Article
AN - SCOPUS:85090216779
SN - 0341-8162
VL - 196
JO - Catena
JF - Catena
M1 - 104883
ER -