|本期目录/Table of Contents|

[1]曹际玲 冯有智 林先贵**.纳米磁性氧化铁对玉米根际土壤真菌群落结构和功能的影响*[J].应用与环境生物学报,2020,26(02):1-11.[doi:10.19675/j.cnki.1006-687x.2019.05024]
 CAO Jiling,FENG Youzhi & LIN Xiangui **.Effects of magnetic iron oxide nanoparticles on structure and function of fungal community in maize rhizosphere soil *[J].Chinese Journal of Applied & Environmental Biology,2020,26(02):1-11.[doi:10.19675/j.cnki.1006-687x.2019.05024]
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纳米磁性氧化铁对玉米根际土壤真菌群落结构和功能的影响*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年02期
页码:
1-11
栏目:
出版日期:
2020-03-20

文章信息/Info

Title:
Effects of magnetic iron oxide nanoparticles on structure and function of fungal community in maize rhizosphere soil *
作者:
曹际玲1;?2 冯有智2 林先贵2**
1福建师范大学地理科学学院 福建 福州 350007
2中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室 江苏 南京 210008
Author(s):
CAO Jiling1;?2;? FENG Youzhi2 & LIN Xiangui 2**
1 School of Geographical Sciences, Fujian Normal University , Fuzhou 350007, China
2 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing Jiangsu 210008, China
关键词:
纳米Fe3O4;?高通量测序;?FUNGuild;?真菌群落结构;?生态功能
Keywords:
magnetic iron oxide nanoparticles;? high-throughput sequencing;? FUNGuild;? fungal community structure;? ecological function
DOI:
10.19675/j.cnki.1006-687x.2019.05024
摘要:
纳米产品的广泛应用导致纳米材料不可避免的进入农田土壤,对农田生态系统产生潜在影响。本研究以纳米磁性氧化铁(Fe3O4)为研究对象,以玉米(Zea mays L.)为供试植物,采用盆栽试验方法,模拟不同纳米Fe3O4水平(0.1、1.0、10.0 mg/kg)的土壤,并以相同水平的微米Fe3O4为纳米效应的对照,利用Illumina高通量测序技术对土壤真菌群落结构进行分析,并结合FUNGuild解析土壤真菌功能对纳米Fe3O4的响应。通过比较不同Fe3O4处理的土壤真菌多样性和群落结构发现,微米Fe3O4和纳米Fe3O4对土壤真菌多样性的影响较小,但10.0 mg/kg施加水平的纳米Fe3O4显着(p < 0.05)改变了土壤真菌群落结构,使真菌群落结构发生显着分异(p < 0.05),主要表现为降低了篮状菌Talarmyces、镰刀菌Fusarium、隐球菌Cryptococcus和被孢霉Mortierella等的相对丰度。FUNGuild分析发现10.0 mg/kg的纳米Fe3O4降低了腐生营养型真菌的相对丰度,但增加了共生营养型和病理营养型真菌的相对丰度。由此可见,一定浓度的纳米Fe3O4可显着改变土壤真菌群落结构和功能,对植物生长和土壤养分循环产生潜在影响。(图3 表2 参52)
Abstract:
Objectives: The inevitable release of nanoparticles into agricultural field with the wide application of nano-products may pose risks to agricultural ecosystem . Soil fungi play key roles in soil nutrient cycling, health and plant productivity, but their responses to nanoparticles remain equivocal. The objective of this investigation was to figure out the influences of magnetic iron oxide nanoparticles on soil fungal community and function . Methods: In this study, a pot experiment was established to investigate the responses of soil fungal assemblages to different application level of magnetic iron oxide nanoparticles (nano Fe 3O4) (0.1, 1.0, 10.0 mg/kg), as well as their counterparts, bulk Fe3O4 particles, using Illumina sequencing analysis method. Meantime, FUNGuild were performed to investigate the influence of nano Fe 3O4 on soil fungal function groups. Results: The sequencing data reveled that neither bulk Fe3O4 nor nano Fe3O4 exerted a significant influence on soil fungal diversity. However, nano Fe3O4 at 10.0 mg/ kg greatly (p < 0.05) shifted the fungal community composition, showing as significant decrease in the relative abundances of Talarmyces, Fusarium, Cryptococcu and Mortierella. In addition, based on FUNGuild analysis, lower proportion of saprotroph and higher relative abundances of pathotroph and symbiotroph fungi were identified in soils amended with 10.0 mg/kg nano Fe3O4 in comparison to control. Conclusions: The nano Fe 3O4 at high concentration would cause negative influences on soil fungal community structure and saprotroph fungi but may potentially increase the pathotroph fungi, which may go against plant growth and soil fertility. These findings are of great help towards building a comprehensive understanding of the potential impact of nanoparticles on the agricultural ecosystem.

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备注/Memo

备注/Memo:
收稿日期 Received: 2019-05-15 接受日期 Accepted: 2019-07-29
*国家自然科学基金面上项目(41371255, 31800520)资助
**通讯作者Corresponding author (E-mail: xglin@issas.ac.cn)
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更新日期/Last Update: 2019-07-30