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The influence of rhizosphere soil fungal diversity and complex community structure on wheat root rot disease

文献类型： 外文期刊

作者： Zhang, Xuejiang 1 ; Wang, Heyun 4 ; Que, Yawei 1 ; Yu, Dazhao 1 ; Wang, Hua 1 ;

作者机构： 1.Hubei Key Lab Crop Dis Insect Pests & Weeds Contr, Wuhan, Hubei, Peoples R China

2.Minist Agr, Key Lab Integrated Pest Management Crops Cent Chi, Wuhan, Hubei, Peoples R China

3.Hubei Acad Agr Sci, Inst Plant Protect & Soil & Fertilizer, Wuhan, Hubei, Peoples R China

4.HuBei Univ Technol, Wuhan, Hubei, Peoples R China

关键词： Rhizosphere soil; Fungal diversity; Community structure; Wheat root rot disease

期刊名称：PEERJ （ 影响因子：3.061； 五年影响因子：3.537 ）

ISSN： 2167-8359

年卷期： 2021 年 9 卷

页码：

收录情况： SCI

摘要： Wheat root rot disease due to soil-borne fungal pathogens leads to tremendous yield losses worth billions of dollars worldwide every year. It is very important to study the relationship between rhizosphere soil fungal diversity and wheat roots to understand the occurrence and development of wheat root rot disease. A significant difference in fungal diversity was observed in the rhizosphere soil of healthy and diseased wheat roots in the heading stage, but the trend was the opposite in the filling stage. The abundance of most genera with high richness decreased significantly from the heading to the filling stage in the diseased groups; the richness of approximately one-third of all genera remained unchanged, and only a few low-richness genera, such as Fusarium and Ceratobasidium, had a very significant increase from the heading to the filling stage. In the healthy groups, the abundance of most genera increased significantly from the heading to filling stage; the abundance of some genera did not change markedly, or the abundance of very few genera increased significantly. Physical and chemical soil indicators showed that low soil pH and density, increases in ammonium nitrogen, nitrate nitrogen and total nitrogen contributed to the occurrence of wheat root rot disease. Our results revealed that in the early stages of disease, highly diverse rhizosphere soil fungi and a complex community structure can easily cause wheat root rot disease. The existence of pathogenic fungi is a necessary condition for wheat root rot disease, but the richness of pathogenic fungi is not necessarily important. The increases in ammonium nitrogen, nitrate nitrogen and total nitrogen contributed to the occurrence of wheat root rot disease. Low soil pH and soil density are beneficial to the occurrence of wheat root rot disease.

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