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Combined addition of chemical and organic amendments enhances plant resistance to aboveground herbivores through increasing microbial abundance and diversity

文献类型： 外文期刊

作者： Jiang, Linhui 1 ; Bonkowski, Michael 4 ; Luo, Ling 1 ; Kardol, Paul 5 ; Zhang, Yu 1 ; Chen, Xiaoyun 1 ; Li, Daming 6 ; Xi 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Soil Ecol Lab, Nanjing 210095, Peoples R China

2.Jiangsu Collaborat Innovat Ctr Solid Organ Waste, Nanjing 210095, Peoples R China

3.Jiangsu Key Lab Solid Organ Waste Utilizat, Nanjing 210095, Peoples R China

4.Univ Cologne, Inst Zool, Terr Ecol, Cluster Excellence Plant Sci CEPLAS, D-50674 Cologne, Germany

5.Swedish Univ Agr Sci, Dept Forest Ecol & Management, SE-90183 Umea, Sweden

6.Jiangxi Inst Red Soil, Nanchang 331717, Jiangxi, Peoples R China

关键词： Organic amendment; Soil biodiversity; Sustainable agriculture; Above; and belowground; Herbivore; Plant defense

期刊名称：BIOLOGY AND FERTILITY OF SOILS （ 影响因子：6.432； 五年影响因子：6.332 ）

ISSN： 0178-2762

年卷期： 2020 年 56 卷 7 期

页码：

收录情况： SCI

摘要： Two greenhouse experiments using soils from long-term field plots were carried out to test whether and how soil factors modulated by organic amendments feed back to rice plant growth and defense against an aboveground herbivore, the planthopperNilaparvata lugens. Using factorial combinations of sterilized soil and soil inocula obtained from chemically amended plots (i.e., control treatment) or chemically plus organically amended plots (i.e., organic treatment), we disentangled the effects of biotic and abiotic soil properties on plant and planthopper performance. We found that, compared with abiotic soil properties, soil biological factors were the main drivers in regulating plant growth performance. Specifically, soil biota that are shaped by the organic treatment had high microbial abundance and diversity and enhanced rice plant tolerance (i.e., increasing plant total biomass) and resistance (i.e., decreasing amino acid and sugar concentrations) to planthoppers. Moreover, the organic treatment simultaneously increased plant growth and defense against planthoppers, which could be explained by high soil nutrient availability driven by soil biota. Our results demonstrate the importance of synergistic effects of soil biota and soil abiotic factors on plant growth and resistance to herbivory. These findings are important for better understanding the mechanisms and impacts of ecological intensification as well as the potential of steering soil communities to reduce the use of chemical fertilizers and pesticides and further optimize crop production.

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