文献类型：期刊文献

英文题名：Phytoremediation Effect and Soil Microbial Community Characteristics of Jiulong Iron Tailings Area, Jiangxi

作者：Hou, Lingyu[1,2,3] Wang, Wenzheng[1,2,3] Song, Liguo[1,2,3] Wang, Qian[1,2,3] Liu, Xiangrong[1,2,3] Zhang, Yanlin[1,2,3] Sun, Qiwu[1,2,3]

第一作者：厚凌宇;Hou, Lingyu

通信作者：Sun, QW[1];Sun, QW[2];Sun, QW[3]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Key Lab Tree Breeding & Cultivat, State Forestry Adm, Beijing 100091, Peoples R China;[3]Beijing Forestry Univ, State Key Lab Efficient Prod Forest Resources, Beijing 100091, Peoples R China

年份：2023

卷号：14

期号：9

外文期刊名：FORESTS

收录：;EI(收录号：20234014822671);Scopus(收录号：2-s2.0-85172737779);WOS:【SCI-EXPANDED(收录号:WOS:001081858500001)】；

基金：This research was funded by the National Key Research and Development Program of China (No. 2022YFF130300503). And The APC was funded by the National Key Research and Development Program of China (No. 2022YFF130300503).

语种：英文

外文关键词：heavy metal; metagenomics; phytoremediation effect; microbial community

摘要：The aim of this paper was to explore the remediation effect and mechanism of Wetland pine (Pinus elliottii), Chinese fir (Cunninghamia lanceolata (Lamb.) Hook), and Alder (Alnus cremastogyne Burkill) on heavy metal contaminated soil in the iron tailings of Jiulong Iron Tailings Area. At the same time, the specificity of plant rhizosphere and non-rhizosphere soil microbial community structure and ecological function were analyzed based on macrogenomic sequencing. The results showed that the dominant microbial genera in J1 (control) was Acidobacteria, followed by Proteobacteria and Actinobacteria. The microbial genera with the highest percentage of relative abundance in J2, J3, J4, J5, and J6 (J2, Wetland Pine rhizosphere; J3, Wetland Pine non-rhizosphere; J4, Chinese fir rhizosphere; J5, Alder rhizosphere; J6, Alder non-rhizosphere) were Proteobacteria, followed by Acidobacteria, and Actinobacteria. It was found that Proteobacteria promoted heavy metal solubilization, activated heavy metals, and converted their forms to improve plant uptake of heavy metals. This proves that the microorganisms of Proteobacteria are the key microbial genera in the study of regional heavy metal remediation. The antibiotic resistance genes (ARGs) in microorganisms can respond to the inducement of heavy metals. Here, we investigated the relationship between the abundance of soil microorganisms ARGs and heavy metal pollution in Jiulong Iron Tailings Area. There are significant differences in the quantity and category of ARGs in the rhizosphere and non-rhizosphere soil samples of the three tree species. The results of this study provide the foundation for the theory and practice of remediation of heavy metal contamination in soils of iron tailing areas in Jiulong Iron Tailings Area in similar stand conditions.