Temporal and environmental factors drive community structure and function of methanotrophs in volcanic forest soils

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外文摘要：Methanotrophs,organisms that obtain oxygen by oxidizing methane,are recognized as the only known biological sink for atmospheric CH4,and forest soil metha-notrophs play crucial roles in mitigating global warming.The succession patterns of methanotrophic communities and functions in Wudalianchi volcano forest soils could provide a basis for the study of evolutionary mechanisms between soil microorganisms,the environment,and car-bon cycling of temperate forest ecosystems under climate change.In this study,the characteristics and drivers of methanotrophic community structure and function of two volcanic soils at different stages of development are ana-lyzed,including an old volcano and a new volcano,which most recently erupted 300 years and 17-19×105 years ago,respectively,and a non-volcano hills as control,based on space for time substitution and Miseq sequencing and bio-information technology.The results showed that CH4 fluxes were significantly higher in old-stage volcano forest soils than new-stage forest soils and non-volcano forest soils.There were significant differences in the community com-position and diversity of soil methanotrophs from different volcano forest soils.Methylococcus was the dominant genus in all soil samples.Additionally,the relative abundance of Methylococcus,along with Clonothrix,Methyloglobulus,Methylomagum,Methylomonas and Methylosarcina,were the important genera responsible for the differences in meth-anotrophic community structure in different volcano forest soils.The relative abundance of methanotroph belonging toγ-proteobacteria was significantly higher than that belonging to α-proteobacteria(P＜0.05).Chao1,Shannon and Simpson indices of soil methanotrophic community were significantly lower in new-stage volcanos and were significantly affected by bulk density,total porosity,pH,nitrate,dissolved organic carbon and dissolved organic nitrogen.There were signifi-cant differences in community structure between new-stage and old-stage volcanoes.Bulk density and pH are important soil properties contributing to the divergence of methano-trophs community structure,and changes in soil properties due to soil development time are important factors driving differences in methanotrophs communities in Wudalianchi volcanic soils.

外文关键词：

MethanotrophspmoASoil development stageVolcanoesForest soils

作者：

Rusong Chai、Hongjie Cao、Qingyang Huang、Lihong Xie、Fan Yang、Hongbin Yin、Yu Lei

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作者单位：

Heilongjiang Forest Botanical Garden,Harbin 150040,People's Republic of China

Institute of Natural Resources and Ecology,Science Academy of Heilongjiang Province,Harbin 150040,People's Republic of China

基金：

Special Projects for the Central Government to guide the development of local science and technologyKey Research &Development Program funding project of Heilongjiang ProvinceResearch Funds of Provincial Research Institutes of Heilongjiang Province

项目编号：

ZY20B15GA21C030ZNBZ2022ZR07

出版年：

2024

DOI：

10.1007/s11676-023-01653-y

林业研究(英文版)

东北林业大学,中国生态学学会

林业研究(英文版)

CSTPCDEI

影响因子：0.365

ISSN：1007-662X

年,卷(期)：2024.35(2)

参考文献量70