Long-Term Effects of Soil Remediation with Willow Short Rotation Coppice on Biogeographic Pattern of Microbial Functional Genes

被引:0
|
作者
Liu, Wenjing [1 ]
Xue, Kai [1 ,2 ,3 ]
Hu, Runpeng [4 ]
Zhou, Jizhong [5 ]
Van Nostrand, Joy D. [5 ]
Dimitrou, Jannis [6 ]
Giagnoni, Laura [7 ]
Renella, Giancarlo [8 ]
机构
[1] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China
[2] Univ Chinese Acad Sci, Beijing Yanshan Earth Crit Zone Natl Res Stn, Beijing 101408, Peoples R China
[3] Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China
[4] Smith Coll, Dept Biol Sci, Northampton, MA 01063 USA
[5] Univ Oklahoma, Inst Environm Genom, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
[6] Swedish Univ Agr Sci, Dept Crop Prod Ecol, S-75007 Uppsala, Sweden
[7] Univ Brescia, Dept Civil Engn Architecture Environm & Math DICA, Via Branze 43, I-25123 Brescia, Italy
[8] Univ Padua, Dept Agron Food Nat Resources Anim & Environm, Viale Univ 16, I-35020 Legnaro, Italy
基金
美国国家科学基金会;
关键词
functional gene diversity; short rotation coppice phytotechnology; soil microbial community; soil pollution; phytoremediation; biogeographic pattern; LANDFILL LEACHATE; ENZYME-ACTIVITIES; ORGANIC-MATTER; TURNOVER RATES; DIVERSITY; MANAGEMENT; BIODIVERSITY; GRASSLAND; NITROGEN; QUALITY;
D O I
10.3390/microorganisms10010140
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Short rotation coppice (SRC) is increasingly being adopted for bioenergy production, pollution remediation and land restoration. However, its long-term effects on soil microbial communities are poorly characterized. Here, we studied soil microbial functional genes and their biogeographic pattern under SRC with willow trees as compared to those under permanent grassland (C). GeoChip analysis showed a lower functional gene diversity in SRC than in C soil, whereas microbial ATP and respiration did not change. The SRC soil had lower relative abundances of microbial genes encoding for metal(-oid) resistance, antibiotic resistance and stress-related proteins. This indicates a more benign habitat under SRC for microbial communities after relieving heavy metal stress, consistent with the lower phytoavailability of some metals (i.e., As, Cd, Ni and Zn) and higher total organic carbon, NO3--N and P concentrations. The microbial taxa-area relationship was valid in both soils, but the space turnover rate was higher under SRC within 0.125 m(2), which was possibly linked to a more benign environment under SRC, whereas similar values were reached beyond thisarea. Overall, we concluded that SRC management can be considered as a phytotechnology that ameliorates the habitat for soil microorganisms, owing to TOC and nutrient enrichment on the long-term.
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页数:14
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