青枯菌
根际
生物
青枯病
Phoma公司
植物
枯萎病
细菌
微生物学
病菌
遗传学
作者
Lin Tan,Weiai Zeng,Yansong Xiao,Pengfei Li,Shuhang Gu,Shaolong Wu,Zhengguang Zhai,Kai Feng,Ye Deng,Qiulong Hu
标识
DOI:10.3389/fmicb.2021.722626
摘要
In the plant rhizosphere and endosphere, some fungal and bacterial species regularly co-exist, however, our knowledge about their co-existence patterns is quite limited, especially during invasion by bacterial wilt pathogens. In this study, the fungal communities from soil to endophytic compartments were surveyed during an outbreak of tobacco wilt disease caused by Ralstonia solanacearum . It was found that the stem endophytic fungal community was significantly altered by pathogen invasion in terms of community diversity, structure, and composition. The associations among fungal species in the rhizosphere and endosphere infected by R. solanacearum showed more complex network structures than those of healthy plants. By integrating the bacterial dataset, associations between fungi and bacteria were inferred by Inter-Domain Ecological Network (IDEN) approach. It also revealed that infected samples, including both the rhizosphere and endosphere, had more complex interdomain networks than the corresponding healthy samples. Additionally, the bacterial wilt pathogenic Ralstonia members were identified as the keystone genus within the IDENs of both root and stem endophytic compartments. Ralstonia members was negatively correlated with the fungal genera Phoma, Gibberella , and Alternaria in infected roots, as well as Phoma, Gibberella , and Diaporthe in infected stems. This suggested that those endophytic fungi may play an important role in resisting the invasion of R. solanacearum.
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