Infectivity and stress tolerance traits affect community assembly of plant pathogenic fungi

Frontiers in Microbiology

Microbiology

Byung Joo Kim¹  Jung Wook Yang¹  Soyoung Choi²  Lee Seul Kim²  Soobin Shin²  Hosung Jeon²  Kyunghun Min²  Dayoun Wui²  Hokyoung Son³  Jung-Eun Kim⁴ 

[1] Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon, Republic of Korea;Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea;Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea;Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea;Research Institute of Climate Change and Agriculture, National Institute of Horticultural and Herbal Science, Rural Development Administration, Jeju, Republic of Korea;

关键词: Fusarium graminearum;    Fusarium asiaticum;    community assembly;    high-throughput screening;    competition assay;   

DOI  :  10.3389/fmicb.2023.1234724

 received in 2023-06-22, accepted in 2023-07-26,  发布年份 2023

来源: Frontiers

【 摘 要 】

Understanding how ecological communities assemble is an urgent research priority. In this study, we used a community ecology approach to examine how ecological and evolutionary processes shape biodiversity patterns of plant pathogenic fungi, Fusarium graminearum and F. asiaticum. High-throughput screening revealed that the isolates had a wide range of phenotypic variation in stress tolerance traits. Net Relatedness Index (NRI) and Nearest Taxon Index (NTI) values were computed based on stress-tolerant distance matrices. Certain local regions exhibited positive values of NRI and NTI, indicating phenotypic clustering within the fungal communities. Competition assays of the pooled strains were conducted to investigate the cause of clustering. During stress conditions and wheat colonization, only a few strains dominated the fungal communities, resulting in reduced diversity. Overall, our findings support the modern coexistence theory that abiotic stress and competition lead to phenotypic similarities among coexisting organisms by excluding large, low-competitive clades. We suggest that agricultural environments and competition for host infection lead to locally clustered communities of plant pathogenic fungi in the field.

【 授权许可】

Unknown   
Copyright © 2023 Choi, Yang, Kim, Jeon, Shin, Wui, Kim, Kim, Son and Min.