Shifts in soil microbial metabolic activities and community structures along a salinity gradient of irrigation water in a typical arid region of China

Chen, Lijuan, Li, Changsheng, Feng, Qi, Wei, Yongping, Zheng, Hang, Zhao, Yan, Feng, Yongjiu and Li, Huiya (2017) Shifts in soil microbial metabolic activities and community structures along a salinity gradient of irrigation water in a typical arid region of China. Science of the Total Environment, 598 64-70. doi:10.1016/j.scitotenv.2017.04.105


Author Chen, Lijuan
Li, Changsheng
Feng, Qi
Wei, Yongping
Zheng, Hang
Zhao, Yan
Feng, Yongjiu
Li, Huiya
Title Shifts in soil microbial metabolic activities and community structures along a salinity gradient of irrigation water in a typical arid region of China
Journal name Science of the Total Environment   Check publisher's open access policy
ISSN 1879-1026
0048-9697
Publication date 2017-11-15
Sub-type Article (original research)
DOI 10.1016/j.scitotenv.2017.04.105
Open Access Status Not yet assessed
Volume 598
Start page 64
End page 70
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Subject 2305 Environmental Engineering
2304 Environmental Chemistry
2311 Waste Management and Disposal
2310 Pollution
Abstract Saline water irrigation can change soil environment, which thereby influence soil microbial process. Based on a field experiment, the shifts in soil microbial metabolic activities and community structures under five irrigation salinities were studied using Biolog and metagenomic methods in this study. The results demonstrated that microbial metabolic activities were greatly restrained in saline water irrigated soils, as average well color development (AWCD) reduced under all saline water irrigation treatments. Although no significant difference in carbon substrate utilization of all six categories was observed among Mild, Medium, High and Severe treatments, the consumption of sole carbon source was significantly varied. Especially, asparagine, galacturonic, putrescine and 4-benzoic acid played a decisive role in dominating the differences. Soil bacterial richness and diversity increased with irrigation salinity while the number of bacterial phyla decreased. Three significantly increased (Proteobacteria, Actinobacteria and Chloroflexi), two decreased (Planctomycetes, Bacteroidetes) and two irresponsive (Gemmatimonadetes and Acidobacteria) phyla were observed as the dominant groups in saline water irrigated soils. The results presented here could improve the understanding of the soil biological process under saline circumstance.
Keyword Community structure
Functional diversity
Metagenomics
Saline water
Soil bacteria
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 2013M542407
2014T70950
31270482
41471210
41501113
51479089
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Earth and Environmental Sciences
 
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