Response of microbial community structure to chromium contamination in Panax ginseng-growing soil
文献类型: 外文期刊
作者: Sun, Hai;Shao, Cai;Jin, Qiao;Li, Meijia;Zhang, Zhenghai;Liang, Hao;Lei, Huixia;Qian, Jiaqi;Zhang, Yayu
作者机构:
关键词: Panax ginseng;Chromium contamination;Microbial community;HiSeq sequencing
期刊名称: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN: 0944-1344
年卷期: 2022 年
页码:
收录情况: SCIE(2022版)
摘要: Chromium (Cr) contamination in soil poses a serious security risk for the development of medicine and food with ginseng as the raw material. Microbiome are critical players in the functioning and service of soil ecosystems, but their feedback to Cr-contaminated ginseng growth is still poorly understood. To study this hypothesis, we evaluated the effects of microbiome and different Cr exposure on the soil microbial community using Illumina HiSeq high-throughput sequencing. Our results indicated that 2467 OTUs and 1785 OTUs were obtained in 16S and ITS1 based on 97% sequence similarity, respectively. Bacterial and fungal diversity were affected significantly in Cr-contaminated soil. Besides, Cr contamination significantly changed the composition of the soil bacterial and fungal communities, and some biomarkers were identified in the different classification level of the different Cr-contaminated treatments using LEfSe. Finally, a heatmap of Spearman's rank correlation coefficients and canonical discriminant analysis (CDA) indicated that Chloroflexi, Gemmatimonadetes, Acidobacteria, Verrucomicobia, and Parcubacteria in phylum level and Acidimicrobiia, Gemmatimonadetes, and Deltaproteobacteria in class level were positively correlated with AK, AP, and NO3--N (p < 0.05 or p < 0.01), but negatively correlated with total Cr and available Cr (p < 0.05 or p < 0.01). Similarly, in the fungal community, Tubaria, Mortierellaceae, and Rhizophagus in the phylum level and Glomeromycetes, Agaricomycetes, and Exobasidiomycetes in the class level were positively correlated with AK, AP, and NO3--N (p < 0.05 or p < 0.01), but negatively correlated with total Cr and available Cr (p < 0.05 or p < 0.01). Our findings provide new insight into the effects of Cr contamination on the microbial communities in ginseng-growing soil.
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