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Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years
Entomopathogenic fungi are one of the key regulators of insect populations in nature. Some species such as Beauveria bassiana with a wide host range have been developed as promising alternatives to chemical insecticides for the biocontrol of insect pests. However, the long-term persistence of the re...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7242398/ https://www.ncbi.nlm.nih.gov/pubmed/32111946 http://dx.doi.org/10.1038/s41396-020-0620-8 |
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author | Mei, Lijuan Chen, Mingjun Shang, Yanfang Tang, Guirong Tao, Ye Zeng, Liang Huang, Bo Li, Zengzhi Zhan, Shuai Wang, Chengshu |
author_facet | Mei, Lijuan Chen, Mingjun Shang, Yanfang Tang, Guirong Tao, Ye Zeng, Liang Huang, Bo Li, Zengzhi Zhan, Shuai Wang, Chengshu |
author_sort | Mei, Lijuan |
collection | PubMed |
description | Entomopathogenic fungi are one of the key regulators of insect populations in nature. Some species such as Beauveria bassiana with a wide host range have been developed as promising alternatives to chemical insecticides for the biocontrol of insect pests. However, the long-term persistence of the released strains, the effect on non-target hosts and local fungal populations remains elusive, but they are considerable concerns with respect to environmental safety. Here we report the temporal features of the Beauveria population genomics and evolution over 20 years after releasing exotic strains to control pine caterpillar pests. We found that the isolates within the biocontrol site were mostly of clonal origins. The released strains could persist in the environment for a long time but with low recovery rates. Similar to the reoccurrence of host jumping by local isolates, the infection of non-target insects by the released strains was evident to endemically occur in association with host seasonality. No obvious dilution effect on local population structure was evident by the releases. However, the population was largely replaced by genetically divergent isolates once per decade but evolved with a pattern of balancing selection and towards expansion through adaptation, non-random outcrossing and isolate migration. This study not only unveils the real-time features of entomopathogenic fungal population genomics and evolution but also provides added values to alleviate the concerns of environmental safety regarding the biocontrol application of mycoinsecticides. |
format | Online Article Text |
id | pubmed-7242398 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-72423982020-05-29 Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years Mei, Lijuan Chen, Mingjun Shang, Yanfang Tang, Guirong Tao, Ye Zeng, Liang Huang, Bo Li, Zengzhi Zhan, Shuai Wang, Chengshu ISME J Article Entomopathogenic fungi are one of the key regulators of insect populations in nature. Some species such as Beauveria bassiana with a wide host range have been developed as promising alternatives to chemical insecticides for the biocontrol of insect pests. However, the long-term persistence of the released strains, the effect on non-target hosts and local fungal populations remains elusive, but they are considerable concerns with respect to environmental safety. Here we report the temporal features of the Beauveria population genomics and evolution over 20 years after releasing exotic strains to control pine caterpillar pests. We found that the isolates within the biocontrol site were mostly of clonal origins. The released strains could persist in the environment for a long time but with low recovery rates. Similar to the reoccurrence of host jumping by local isolates, the infection of non-target insects by the released strains was evident to endemically occur in association with host seasonality. No obvious dilution effect on local population structure was evident by the releases. However, the population was largely replaced by genetically divergent isolates once per decade but evolved with a pattern of balancing selection and towards expansion through adaptation, non-random outcrossing and isolate migration. This study not only unveils the real-time features of entomopathogenic fungal population genomics and evolution but also provides added values to alleviate the concerns of environmental safety regarding the biocontrol application of mycoinsecticides. Nature Publishing Group UK 2020-02-28 2020-06 /pmc/articles/PMC7242398/ /pubmed/32111946 http://dx.doi.org/10.1038/s41396-020-0620-8 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Mei, Lijuan Chen, Mingjun Shang, Yanfang Tang, Guirong Tao, Ye Zeng, Liang Huang, Bo Li, Zengzhi Zhan, Shuai Wang, Chengshu Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
title | Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
title_full | Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
title_fullStr | Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
title_full_unstemmed | Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
title_short | Population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
title_sort | population genomics and evolution of a fungal pathogen after releasing exotic strains to control insect pests for 20 years |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7242398/ https://www.ncbi.nlm.nih.gov/pubmed/32111946 http://dx.doi.org/10.1038/s41396-020-0620-8 |
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