| 不同程度重金属污染对稻田土壤真菌群落结构的影响 |
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| 引用本文： | 闫 华,欧阳明,张旭辉,应 多,赵熙君,张玉娇,郑聚锋,刘晓雨,卞荣军,李恋卿,潘根兴.不同程度重金属污染对稻田土壤真菌群落结构的影响[J].土壤,2018,50(3):513-521. |
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| 作者姓名： | 闫 华 欧阳明 张旭辉 应 多 赵熙君 张玉娇 郑聚锋 刘晓雨 卞荣军 李恋卿 潘根兴 |
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| 作者单位： | 南京农业大学农业资源与生态环境研究所 |
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| 基金项目： | 国家自然科学基金项目(41471193)和江苏高校品牌专业建设工程资助项目(PPZY2015A061)资助。 |
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| 摘 要： | 为了研究土壤真菌群落结构在不同程度重金属污染中的变化,本文用Illumina Hi Seq高通量测序技术分析了苏南地区某金属冶炼厂和加工产业区的重金属污染水稻土的真菌群落结构,发现不同程度重金属污染对水稻季土壤真菌丰度和群落结构均有显著影响。经过真菌主成分分析发现,PC1影响因素对样品处理差异的贡献率是35.96%,PC2影响因素对样品处理差异的贡献率是21.48%;通过真菌冗余度分析发现,重金属Pb和Cu污染对土壤真菌群落结构的影响显著;通过对真菌属水平的相对丰度分析表明,重金属污染会显著降低敏感真菌的丰度,如被孢霉属相对丰度最高降低了87.50%、木霉属最高降低了99.46%、离壳菌属和菇属最高降低了100.00%,同时耐性真菌的相对丰度会提高,如类球囊霉属的相对丰度最高增加了98倍、四枝孢霉属最高增加了56倍、根囊壶菌属最高增加了2.62倍。综上所述,不同程度重金属污染对稻田土壤真菌群落结构有显著影响,且随着污染程度的增加,抗逆真菌相对数量和种类显著增加,敏感真菌的相对数量急剧减少,真菌群落结构随着重金属污染程度增加进一步分化。
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| 关 键 词： | 重金属污染 稻田土壤 真菌群落结构 Illumina HiSeq高通量测序 |
| 收稿时间： | 2017/2/23 0:00:00 |
| 修稿时间： | 2017/4/15 0:00:00 |
Effects of Different Gradients of Heavy Metal Contamination on Soil Fungi Community Structure in Paddy Soils |
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| YAN Hu,OU Yangming,ZHANG Xuhui,YING Duo,ZHAO Xijun,ZHANG Yujiao,ZHENG Jufeng,LIU Xiaoyu,BIAN Rongjun,LI Lianqing and PAN Genxing.Effects of Different Gradients of Heavy Metal Contamination on Soil Fungi Community Structure in Paddy Soils[J].Soils,2018,50(3):513-521. |
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| Authors: | YAN Hu OU Yangming ZHANG Xuhui YING Duo ZHAO Xijun ZHANG Yujiao ZHENG Jufeng LIU Xiaoyu BIAN Rongjun LI Lianqing and PAN Genxing |
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| Institution: | Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University,Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University and Institute of Resource, Ecosystem and Environment of Agriculture, Nanjing Agricultural University |
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| Abstract: | Fungi community structure in paddy soils in south Jiangsu under different gradients of heavy metal pollution was analyzed in order to study the impact of heavy metal pollution on the microbial variability. The results showed that heavy metal pollution has significant impact on fungi number and community structure in paddy soil. Principal coordinate analysis (PCoA) revealed that the first and second components accounted for 35.96% and 21.48% of contribution rates, respectively. The results of redundancy analysis (RDA) showed that Pb and Cu greatly influenced fungi community structure. Relative abundance analysis of fungi at genus taxonomic level showed that heavy metal pollution significantly reduced the population of sensitive fungi but increased the population of patience fungi. Sensitive fungi genus included Mortierella, Trichoderma, Apodus and Hypholoma, wheras patience fungi genus included Paraglomus, Tetracladium and Rhizophydium. In conclusion, heavy metal-contamination can significantly influences soil fungi community structure in paddy soils, increasing heavy metal concentration can increase the population and diversity of heavy metal tolerant fungi and decrease sensitive fungi, which furtherly increases the differentiation of the structure of fungi community. |
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| Keywords: | Heavy metal pollution Paddy soil Fungi community structure Illumina HiSeq sequencing |
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