Long-term nickel exposure altered the bacterial community composition but not diversity in two contrasting agricultural soils

被引:28
作者
Li, Jing [1 ,2 ]
Hu, Hang-Wei [4 ]
Ma, Yi-Bing [3 ]
Wang, Jun-Tao [1 ,2 ]
Liu, Yu-Rong [1 ]
He, Ji-Zheng [1 ,4 ]
机构
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100049, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Soil Fertil & Fertilizer Effects Long Term M, Beijing 100081, Peoples R China
[4] Univ Melbourne, Fac Vet & Agr Sci, Parkville, Vic 3010, Australia
基金
美国国家科学基金会;
关键词
Nickel pollution; Soil bacterial community; Diversity; Abundance; Community composition; Soil microbial biomass carbon; Field experiment; AMMONIA-OXIDIZING BACTERIA; UPLAND RED SOIL; MICROBIAL PROCESSES; COPPER; RESISTANCE; SEQUENCES; ARCHAEA; PH; MICROORGANISMS; POPULATIONS;
D O I
10.1007/s11356-015-4232-1
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Nickel pollution imposes deleterious effects on soil ecosystem. The responses of soil microorganisms to long-term nickel pollution under field conditions remain largely unknown. Here, we used high-throughput sequencing to elucidate the impacts of long-term nickel pollution on soil bacterial communities in two contrasting agricultural soils. Our results found that the soil microbial biomass carbon consistently decreased along the nickel gradients in both soils. Nickel pollution selectively favored or impeded the prevalence of several dominant bacterial guilds, in particular, Actinobacteria showed tolerance, while Acidobacteria and Planctomycetes displayed sensitivity. Despite the apparent shifts in the bacterial community composition, no clear tendency in the bacterial diversity and abundance was identified along the nickel gradients in either soil. Collectively, we provide evidence that long-term nickel pollution shifted the soil bacterial communities, resulting in the decrease of microbial biomass although the bacterial diversity was not significantly changed.
引用
收藏
页码:10496 / 10505
页数:10
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