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Deciphering differences in the chemical and microbial characteristics of healthy and Fusarium wilt-infected watermelon rhizosphere soils

文献类型： 外文期刊

作者： Meng, Tianzhu 1 ; Wang, Qiujun 1 ; Abbasi, Pervaiz 2 ; Ma, Yan 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Jiangsu, Peoples R China

2.Agr & Agri Food Canada, Kentville Res & Dev Ctr, 32 Main St, Kentville, NS B4N 1J5, Canada

关键词： Fusarium wilt; Plant health; Microbiome; Soil chemical properties

期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：4.813； 五年影响因子：4.697 ）

ISSN： 0175-7598

年卷期： 2019 年 103 卷 3 期

页码：

收录情况： SCI

摘要： Plant health is determined by the comprehensive effect of soil physicochemical and biological properties. In this study, we compared the chemical properties and microbiomes of the rhizosphere soils of healthy, Fusarium oxysporum-infected, and dead watermelon plants and attempted to assess their potential roles in plant health and Fusarium wilt expression. The rhizosphere soils were collected from watermelon plants grown in a greenhouse under the same field management practices, and various soil microbial and chemical characteristics were analyzed. The rhizosphere soil of healthy plants had the lowest abundance of F. oxysporum and pH and the highest contents of ammonium (NH4+) and nitrate (NO3-). The relative content of hemicellulose was decreased in the rhizosphere soil of F. oxysporum-infected plants. The differences in soil microbial compositions among the watermelons at the three health statuses were obvious, and their microbiomes changed gradually along with plant health status. The microbiome in the rhizosphere soil of healthy plants had the highest relative abundances of potential antagonists and the lowest relative abundances of potential pathogens. The specific microbial composition together with some chemical properties of the rhizosphere soil of healthy plants might be responsible for inhibiting Fusarium wilt expression.

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