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Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential

Microbial symbionts are known to assist exotic pests in their colonization of new host plants. However, there has been little evidence linking symbiotic invasion success to mechanisms for mitigation of native plant resistance. The red turpentine beetle (RTB) was introduced with a fungus, Leptographi...

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Autores principales: Cheng, Chihang, Xu, Letian, Xu, Dandan, Lou, Qiaozhe, Lu, Min, Sun, Jianghua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020614/
https://www.ncbi.nlm.nih.gov/pubmed/27621032
http://dx.doi.org/10.1038/srep33110
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author Cheng, Chihang
Xu, Letian
Xu, Dandan
Lou, Qiaozhe
Lu, Min
Sun, Jianghua
author_facet Cheng, Chihang
Xu, Letian
Xu, Dandan
Lou, Qiaozhe
Lu, Min
Sun, Jianghua
author_sort Cheng, Chihang
collection PubMed
description Microbial symbionts are known to assist exotic pests in their colonization of new host plants. However, there has been little evidence linking symbiotic invasion success to mechanisms for mitigation of native plant resistance. The red turpentine beetle (RTB) was introduced with a fungus, Leptographium procerum, to China from the United States and became a destructively invasive symbiotic complex in natural Pinus tabuliformis forests. Here, we report that three Chinese-resident fungi, newly acquired by RTB in China, induce high levels of a phenolic defensive chemical, naringenin, in pines. This invasive beetle-fungus complex is suppressed by elevated levels of naringenin. However, cryptic microbiotas in RTB galleries strongly degrade naringenin, and pinitol, the main soluble carbohydrate of P. tabuliformis, is retained in L. procerum-infected phloem and facilitate naringenin biodegradation by the microbiotas. These results demonstrate that cryptic microbiota mitigates native host plant phenolic resistance to an invasive symbiotic complex, suggesting a putative mechanism for reduced biotic resistance to symbiotic invasion.
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spelling pubmed-50206142016-09-20 Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential Cheng, Chihang Xu, Letian Xu, Dandan Lou, Qiaozhe Lu, Min Sun, Jianghua Sci Rep Article Microbial symbionts are known to assist exotic pests in their colonization of new host plants. However, there has been little evidence linking symbiotic invasion success to mechanisms for mitigation of native plant resistance. The red turpentine beetle (RTB) was introduced with a fungus, Leptographium procerum, to China from the United States and became a destructively invasive symbiotic complex in natural Pinus tabuliformis forests. Here, we report that three Chinese-resident fungi, newly acquired by RTB in China, induce high levels of a phenolic defensive chemical, naringenin, in pines. This invasive beetle-fungus complex is suppressed by elevated levels of naringenin. However, cryptic microbiotas in RTB galleries strongly degrade naringenin, and pinitol, the main soluble carbohydrate of P. tabuliformis, is retained in L. procerum-infected phloem and facilitate naringenin biodegradation by the microbiotas. These results demonstrate that cryptic microbiota mitigates native host plant phenolic resistance to an invasive symbiotic complex, suggesting a putative mechanism for reduced biotic resistance to symbiotic invasion. Nature Publishing Group 2016-09-13 /pmc/articles/PMC5020614/ /pubmed/27621032 http://dx.doi.org/10.1038/srep33110 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Cheng, Chihang
Xu, Letian
Xu, Dandan
Lou, Qiaozhe
Lu, Min
Sun, Jianghua
Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential
title Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential
title_full Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential
title_fullStr Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential
title_full_unstemmed Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential
title_short Does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? Implications for invasion potential
title_sort does cryptic microbiota mitigate pine resistance to an invasive beetle-fungus complex? implications for invasion potential
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020614/
https://www.ncbi.nlm.nih.gov/pubmed/27621032
http://dx.doi.org/10.1038/srep33110
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