数字农科院2.0

Saline Stress Modifies The Effect O.f Cadmium Toxicity On S oil Archaeal Communities

文献类型： 外文期刊

作者： Wang, M; Chen, SB; Chen, L; Wang, D

作者机构：

关键词： Multiple stresses; Cadmium; Salinity; Soil archaeal communities; Soil properties

期刊名称： ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

ISSN： 0147-6513

年卷期： 2019 年 182 卷

页码：

收录情况： JCR（2021版）

摘要： The objective of this study was to examine the response of soil archaeal communities to saline stress in different types of Cd-contaminated soils from the North China Plain. Increased soil salinity by addition of 0.5% sodium salts (NaCl: Na2SO4: NaHCO3: Na2CO3 = 1:9:9:1) increased available Cd concentration, resulting in decreased ratios of Cd2+/Cd-T and CdSO4/Cd-T and increased ratios of CdCln2-n/Cd-T in soil solution. Soil saline stress decreased archaeal abundance and diversity and changed major soil archaeal taxa. For example, increased saline stress enriched taxa in the archaeal phyla Thaumarchaeota and Euryarchaeota, and these enriched tolerant taxa had much stronger correlations with soil properties, such as soil pH, EC or Na+. In addition, some microbes with low abundances like Bathyarchaeia (no rank) and Candidatus Nitrosotenuis were found to closely correlate with soil pH, EC, Na+, and Cl-, indicating they might play disproportionate roles in regulating ecological functions in stressed habitats. These results suggest that saline stress modified the effect of Cd toxicity on soil archaeal communities in different types of Cd-contaminated soils.

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