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Effect of Humic Acid on Soil Physical and Chemical Properties, Microbial Community Structure, and Metabolites of Decline Diseased Bayberry

文献类型： 外文期刊

作者： Ren, Haiying 1 ; Islam, Mohammad Shafiqul 3 ; Wang, Hongyan 1 ; Guo, Hao 4 ; Wang, Zhenshuo 4 ; Qi, Xingjiang 1 ; Zhang, Shuwen 1 ; Guo, Junning 3 ; Wang, Qi 4 ; Li, Bin 3 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Hort, Hangzhou 310021, Peoples R China

2.State Key Lab Managing Biot & Chem Treats Qual & S, Hangzhou 310021, Peoples R China

3.Zhejiang Univ, Inst Biotechnol, Coll Agr & Biotechnol, Hangzhou 310058, Peoples R China

4.China Agr Univ, Coll Plant Protect, Dept Plant Pathol, MOA Key Lab Pest Monitoring & Green Management, Beijing 100193, Peoples R China

关键词： bayberry; decline disease; humic acid; physical and chemical properties; microbial community; metabolomics

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 23 期

页码：

收录情况： SCI

摘要： In recent years, bayberry decline disease has caused significant damage to the bayberry industry. In order to evaluate whether humic acid can be used to effectively control the disease, this research examined the nutritional growth and fruit quality of bayberry, soil physical and chemical properties, soil microbial community structure, and metabolites. Results indicated that the application of humic acid not only improved the vigor and fruit quality of diseased trees, but also increased the diversity of microbial communities in the rhizosphere soil. A great increase was observed in the relative abundance of bacterial genus Mycobacterium and Crossiella; fungal genus Fusarium and Coniosporium. In contrast, a significant decrease was observed in the relative abundance of bacterial genus Acidothermus, Bryobacter, Acidibacter, fungal genus of Geminibasidium and Mycena. Analysis of redundancies (RDA) for microbial communities and soil characteristics showed that the main four variables, including available nitrogen, phosphorus, potassium, and calcium, had a great effect on the composition of bacterial and fungal communities in bayberry rhizosphere soil at the genus level. The main four variables had a greater effect on bacterial communities than on fungal communities. In addition, ABC transporter, arginine and proline metabolism, galactose metabolism, and glutathione metabolism were significantly affected by humic acid, which changed the content of 81 metabolites including 58 significantly down-regulated metabolites such as isohexonic acid and carinitine, and 23 significantly up-regulated metabolites such as acidic acid, guaninosuccinate, lyxose, 2-monoolein, epicatechin, and pentonolactone. These metabolites also significantly correlated with rhizosphere soil microbiota at the phylum, order, and genus levels. In conclusion, the results demonstrated the role of humic acid on plant growth and fruit quality, as well as rhizosphere soil characteristics, microbiota, and secondary metabolites, which provides novel insights into the control of bayberry decline disease.

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