Characteristics of metal-tolerant plant growth-promoting yeast (Cryptococcus sp NSE1) and its influence on Cd hyperaccumulator Sedum plumbizincicola
文献类型：期刊论文
| 作者 | Liu, WX; Wang, BB; Wang, QL; Hou, JY; Wu, LH; Wood, JL; Luo, YM ; Franks, AE
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| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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| 出版日期 | 2016-09-01 |
| 卷号 | 23期号:18页码:18621-18629 |
| 关键词 | Cd-contaminated soil Phytoremediation Cryptococcus sp. Plant growth promoting Microbial community |
| ISSN号 | 0944-1344 |
| 产权排序 | [Liu, Wuxing; Wang, Beibei; Wang, Qingling; Hou, Jinyu; Wu, Longhua; Luo, Yongming] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Wang, Beibei; Hou, Jinyu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wood, Jennifer L.; Franks, Ashley E.] La Trobe Univ, Dept Physiol Anat & Microbiol, Melbourne, Vic 3086, Australia; [Luo, Yongming] Chinese Acad Sci, Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 通讯作者 | Liu, WX (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. Email:liuwuxin@issas.ac.cn |
| 英文摘要 | Plant growth-promoting yeasts are often over looked as a mechanism to improve phytoremediation of heavy metals. In this study, Cryptococcus sp. NSE1, a Cd-tolerant yeast with plant growth capabilities, was isolated from the rhizosphere of the heavy metal hyperaccumulator Sedum plumbizincicola. The yeast exhibited strong tolerance to a range of heavy metals including Cd, Cu, and Zn on plate assays. The adsorption rate Cd, Cu, Zn by NSE1 was 26.1, 13.2, and 25.2 %, respectively. Irregular spines were formed on the surface of NSE1 when grown in MSM medium supplemented with 200 mg L-1 Cd. NSE1 was capable of utilizing 1-aminocyclopropane-1-carboxylate (ACC) as a sole nitrogen source and was capable of solubilization of inorganic phosphate at rates of 195.2 mg L-1. Field experiments demonstrated that NSE1 increased phytoremediation by increasing the biomass of Cd hyperaccumulator S. plumbizincicola (46 %, p < 0.05) during phytoremediation. Overall, Cd accumulation by S. plumbizincicola was increased from 19.6 to 31.1 mg m(-2) though no difference in the concentration of Cd in the shoot biomass was observed between NSE1 and control. A Cd accumulation ratio of 38.0 % for NSE1 and 17.2 % for control was observed. The HCl-extractable Cd and CaCl2-extractable Cd concentration in the soil of the NSE1 treatment were reduced by 39.2 and 29.5 %, respectively. Community-level physiology profiling, assessed using Biolog Eco plates, indicated functional changes to the rhizosphere community inoculated with NSE1 by average well color development (AWCD) and measurement of richness (diversity). Values of Shannon-Weiner index, Simpson index, and McIntosh index showed a slight but no significant increases. These results indicate that inoculation of NSE1 could increase the shoot biomass of S. plumbizincicola, enhance the Cd accumulation in S. plumbizincicola, and decrease the available heavy metal content in soils significantly without overall significant changes to the microbial community. |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | MICROBIAL COMMUNITIES ; FUNCTIONAL DIVERSITY ; CONTAMINATED SOIL ; MEDICINAL SHRUB ; POLLUTED SOIL ; PHOSPHATE ; SOLUBILIZATION ; RHIZOBACTERIA ; CADMIUM ; RESISTANT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000384435800068 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/17245]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, WX,Wang, BB,Wang, QL,et al. Characteristics of metal-tolerant plant growth-promoting yeast (Cryptococcus sp NSE1) and its influence on Cd hyperaccumulator Sedum plumbizincicola[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(18):18621-18629. |
| APA | Liu, WX.,Wang, BB.,Wang, QL.,Hou, JY.,Wu, LH.,...&Franks, AE.(2016).Characteristics of metal-tolerant plant growth-promoting yeast (Cryptococcus sp NSE1) and its influence on Cd hyperaccumulator Sedum plumbizincicola.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(18),18621-18629. |
| MLA | Liu, WX,et al."Characteristics of metal-tolerant plant growth-promoting yeast (Cryptococcus sp NSE1) and its influence on Cd hyperaccumulator Sedum plumbizincicola".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.18(2016):18621-18629. |
入库方式： OAI收割
来源：烟台海岸带研究所
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