当前位置:

Short-term parasite-infection alters already the biomass, activity and functional diversity of soil

来源:不详 | 编辑:管理员 | 发布时间:2014-12-01 | 栏目:2014 | | 投票数:0
内容导读:作者:Jun-MinLi,Ze-XinJin,FrankHagedorn&Mai-HeLi影响因子:5.078刊物名称:ScientificReports出版年卷:4:6895DOI:10.1038/srep06895文章摘要:Nativeparasiticplantsmaybeusedtoinfectandcontrolinvasiveplan……
作    者:Jun-Min Li, Ze-Xin Jin, Frank Hagedorn& Mai-He Li
影响因子:5.078
刊物名称:Scientific Reports
出版年卷:4:6895 DOI: 10.1038/srep06895

文章摘要:Native parasitic plants may be used to infect and control invasive plants. We established microcosms with invasive Mikania micrantha and native Coix lacryma-jobi growing in mixture on native soils, with M. micrantha being infected by parasitic Cuscuta campestris at four intensity levels for seven weeks to estimate the top-down effects of plant parasitism on the biomass and functional diversity of soil microbial communities. Parasitism significantly decreased root biomass and altered soil microbial communities. Soil microbial biomass decreased, but soil respiration increased at the two higher infection levels, indicating a strong stimulation of soil microbial metabolic activity (1180%). Moreover, a Biolog assay showed that the infection resulted in a significant change in the functional diversity indices of soil microbial communities. Pearson correlation analysis indicated that microbial biomass declined significantly with decreasing root biomass, particularly of the invasive M. micrantha. Also, the functional diversity indices of soil microbial communities were positively correlated with soil microbial biomass. Therefore, the negative effects on the biomass, activity and functional diversity of soil microbial community by the seven week long plant parasitism was very likely caused by decreased root biomass and root exudation of the invasive M. micrantha.

 下载信息  [文件大小:759.90 KB 下载次数: 次]
点击下载文件:Li-Scientific-Reports.pdf

0% (0)
0% (0)
Tag:
上一篇:
下一篇:

相关阅读:

    没有相关信息

新闻签收:

网友评论: