Monotonic trends of soil microbiomes, metagenomic and metabolomic functioning across ecosystems along water gradients in the Altai region, northwestern China

被引：2

作者：

Fu, Qi ^{[1
]}

Qiu, Yingbo ^{[1
]}

Zhao, Jiayi ^{[1
]}

Li, Jiaxin ^{[1
]}

Xie, Siqi ^{[1
]}

Liao, Qiuchang ^{[1
]}

Fu, Xianheng ^{[1
]}

Huang, Yu ^{[1
]}

Yao, Zhiyuan ^{[2
]}

Dai, Zhongmin ^{[3
]}

Qiu, Yunpeng ^{[4
]}

Yang, Yuchun ^{[1
]}

Li, Furong ^{[1
]}

Chen, Huaihai ^{[1
]}

机构：

[1] Sun Yat sen Univ, Sch Ecol, State Key Lab Biocontrol, Shenzhen Campus, Shenzhen 518107, Guangdong, Peoples R China

[2] Ningbo Univ, Sch Civil & Environm Engn, Ningbo 315211, Zhejiang, Peoples R China

[3] Zhejiang Univ, Inst Soil & Water Resources & Environm Sci, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China

[4] Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 912卷

基金：

中国国家自然科学基金;

关键词：

Altai region; Soil moisture; Microbial diversity; Metagenome; Metabolome; COMMUNITY STRUCTURE; ORGANIC-MATTER; FUNGAL COMMUNITIES; PLANT DIVERSITY; CLIMATE-CHANGE; FOREST SOIL; TERRESTRIAL ECOSYSTEMS; ASSEMBLY PROCESSES; ENZYME-ACTIVITIES; LAND-USE;

D O I：

10.1016/j.scitotenv.2023.169351

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To investigate microbial communities and their contributions to carbon and nutrient cycling along water gradients can enhance our comprehension of climate change impacts on ecosystem services. Thus, we conducted an assessment of microbial communities, metagenomic functions, and metabolomic profiles within four ecosystems, i.e., desert grassland (DG), shrub-steppe (SS), forest (FO), and marsh (MA) in the Altai region of Xinjiang, China. Our results showed that soil total carbon (TC), total nitrogen, NH4+, and NO3  increased, but pH decreased with soil water gradients. Microbial abundances and richness also increased with soil moisture except the abundances of fungi and protists being lowest in MA. A shift in microbial community composition is evident along the soil moisture gradient, with Proteobacteria, Basidiomycota, and Evosea proliferating but a decline in Actinobacteria and Cercozoa. The beta-diversity of microbiomes, metagenomic, and metabolomic functioning were correlated with soil moisture gradients and have significant associations with specific soil factors of TC, NH4 and pH. Meta-genomic functions associated with carbohydrate and DNA metabolisms, as well as phages, prophages, TE, plasmids functions diminished with moisture, whereas the genes involved in nitrogen and potassium metabolism, along with certain biological interactions and environmental information processing functions, demonstrated an augmentation. Additionally, MA harbored the most abundant metabolomics dominated by lipids and lipid-like molecules and organic oxygen compounds, except certain metabolites showing decline trends along water gra-dients, such as N '-Hydroxymethylnorcotinine and 5-Hydroxyenterolactone. Thus, our study suggests that future ecosystem succession facilitated by changes in rainfall patterns will significantly alter soil microbial taxa, functional potential, and metabolite fractions.

引用

页数：19