Ecological responses of bacterial assembly and functions to steep Cd gradient in a typical Cd-contaminated farmland ecosystem
文献类型: 外文期刊
作者: Deng, Yan 1 ; Fu, Shaodong 2 ; Sarkodie, Emmannuel Konadu 2 ; Zhang, Shuangfei 2 ; Jiang, Luhua 2 ; Liang, Yili 2 ; Yin, Huaqun 2 ; Bai, Lianyang 1 ; Liu, Xueduan 2 ; Liu, Hongwei 2 ; Jiang, Huidan 1 ;
作者机构: 1.Hunan Acad Agr Sci, Hunan Agr Biotechnol Res Inst, Changsha 410125, Peoples R China
2.Cent South Univ, Minist Educ, Key Lab Biomet, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China
关键词: Cadmium; Farmland ecosystem; Bacterial community; Random forest; BugBase
期刊名称:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY ( 影响因子:7.129; 五年影响因子:7.284 )
ISSN: 0147-6513
年卷期: 2022 年 229 卷
页码:
收录情况: SCI
摘要: The response of soil bacterial communities from farmland ecosystems to cadmium (Cd) pollution, in which a steep concentration gradient of more than 100 mg/kg has naturally formed, has not previously been fully reported. In this study, a field investigation was conducted in a typical severe Cd-polluted farmland ecosystem, and the bacterial community response to the steep Cd gradient was analyzed. The results showed that Cd concentration sharply decreased from 159.2 mg/kg to 4.18 mg/kg among four sampling sites alongside an irrigation canal over a distance of 150 m. Bacterial diversity and richness were significantly lower in highly polluted sites, and random forest analysis indicated that Cd gradient played a decisive role in reducing alpha diversity. Redundancy analysis (RDA) and co-occurrence network indicated that the synergistic effects of pH, Cd, and phosphorus were the main drivers shaping community structure. The functional results predicted by BugBase suggested that the bacterial community may adapt to the harsh environment by recruiting Cd-resistant microbes and improving oxidative stress tolerance of the whole community. Cd-resistant microorganisms such as Burkholderia, Bradyrhizobium, and Sulfurifustis, which directly or indirectly participate in diminishing oxidative damage of Cd, may play essential roles in maintaining community stability and might be potential bacterial resources for the bioremediation of Cd pollution.
- 相关文献
作者其他论文 更多>>
-
The influence of cysteine in transformation of Cd fractionation and microbial community structure and functional profile in contaminated paddy soil
作者:Sarkodie, Emmanuel Konadu;Jiang, Luhua;Li, Kewei;Guo, Ziwen;Yang, Jiejie;Shi, Jiaxin;Peng, Yulong;Wu, Xinhong;Huang, Shanshan;Liu, Hongwei;Liu, Xueduan;Sarkodie, Emmanuel Konadu;Jiang, Luhua;Li, Kewei;Guo, Ziwen;Yang, Jiejie;Shi, Jiaxin;Peng, Yulong;Wu, Xinhong;Huang, Shanshan;Liu, Hongwei;Liu, Xueduan;Deng, Yan;Jiang, Huidan
关键词:Soil remediation; Microbial ecology; Cd pollution; Cysteine; Leaching
-
Purification and water resource circulation utilization of Cd-containing wastewater during microbial remediation of Cd-polluted soil
作者:Deng, Yan;Jiang, Huidan;Deng, Yan;Fu, Shaodong;Xu, Menglong;Liu, Hongwei;Jiang, Luhua;Liu, Xueduan
关键词:Cd-containing wastewater; Water recycling; Adsorption material; Purification; Microbial remediation
-
Root Endophyte Shift and Key Genera Discovery in Rice under Barnyardgrass Stress
作者:Li, Shuyan;Yan, Qiling;Wang, Jieyu;Jiang, Huidan;Li, Zuren;Peng, Qiong;Li, Shuyan;Jiang, Huidan;Li, Zuren;Peng, Qiong
关键词:rice; Echinochloa crus-galli; biotic stress; endophytic bacterium; endophytic fungus; phylogenetic investigation of communities by reconstruction of unobserved states; FUNGuild test
-
Experimental warming leads to convergent succession of grassland archaeal community
作者:Zhang, Ya;Ning, Daliang;Wu, Linwei;Yuan, Mengting Maggie;Zhou, Xishu;Hu, Yuanliang;Jian, Siyang;Yang, Zhifeng;Han, Shun;Feng, Jiajie;Kuang, Jialiang;Cornell, Carolyn R.;Bates, Colin T.;Fan, Yupeng;Michael, Jonathan P.;Ouyang, Yang;Guo, Jiajing;Gao, Zhipeng;Shi, Zheng;Xiao, Naijia;Fu, Ying;Zhou, Aifen;Wu, Liyou;Zhou, Jizhong;Zhang, Ya;Ning, Daliang;Wu, Linwei;Yuan, Mengting Maggie;Zhou, Xishu;Hu, Yuanliang;Jian, Siyang;Yang, Zhifeng;Han, Shun;Feng, Jiajie;Kuang, Jialiang;Cornell, Carolyn R.;Bates, Colin T.;Fan, Yupeng;Michael, Jonathan P.;Ouyang, Yang;Guo, Jiajing;Gao, Zhipeng;Shi, Zheng;Xiao, Naijia;Fu, Ying;Zhou, Aifen;Wu, Liyou;Zhou, Jizhong;Wu, Linwei;Yuan, Mengting Maggie;Zhou, Xishu;Liu, Xueduan;Guo, Xue;Yang, Yunfeng;Hu, Yuanliang;Guo, Jiajing;Gao, Zhipeng;Tiedje, James M.;Zhou, Jizhong;Zhou, Jizhong;Zhou, Jizhong
关键词:
-
Dynamic variation of Paris polyphylla root-associated microbiome assembly with planting years
作者:Fu, Shaodong;Zhang, Shuangfei;Duan, Zhenchun;Wu, Xinhong;Zhou, Jin;Li, Shihui;Liu, Xueduan;Liang, Yili;Deng, Yan;Zou, Kai
关键词:Community assembly; Compartments; Dynamic variation; Paris polyphylla; Planting years
-
Cultivar-dependent rhizobacteria community and cadmium accumulation in rice: Effects on cadmium availability in soils and iron-plaque formation
作者:Zhang, Feng;Peng, Di;Liu, Lu;Jiang, Huidan;Bai, Lianyang;Zhang, Feng;Peng, Di;Liu, Lu;Jiang, Huidan;Bai, Lianyang
关键词:Rice cultivar; Cd accumulation; Rhizosphere; Bacterial community; Iron plaque; Cd availability
-
Biogeographic pattern and relevant environmental factors for rhizobial communities in the rhizosphere and root nodules of kudzu (Pueraria lobata)
作者:Liu, Lu;Jiang, Huidan;Peng, Di;Zhang, Xin
关键词:Kudzu; Rhizobia; rpoB gene; SMc00019-thrA-truA; Biogeography