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Could vectors’ fear of predators reduce the spread of plant diseases?
Predators influence the behaviour of prey and by doing so they potentially reduce pathogen transmission by a vector. Arthropod predators have been shown to reduce the consumption of plant biomass by pest herbivores, but their cascading non-consumptive effect on vector insects’ feeding behaviour and...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5992157/ https://www.ncbi.nlm.nih.gov/pubmed/29880845 http://dx.doi.org/10.1038/s41598-018-27103-y |
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author | Tholt, G. Kis, A. Medzihradszky, A. Szita, É. Tóth, Z. Havelda, Z. Samu, F. |
author_facet | Tholt, G. Kis, A. Medzihradszky, A. Szita, É. Tóth, Z. Havelda, Z. Samu, F. |
author_sort | Tholt, G. |
collection | PubMed |
description | Predators influence the behaviour of prey and by doing so they potentially reduce pathogen transmission by a vector. Arthropod predators have been shown to reduce the consumption of plant biomass by pest herbivores, but their cascading non-consumptive effect on vector insects’ feeding behaviour and subsequent pathogen transmission has not been investigated experimentally before. Here we experimentally examined predator-mediated pathogen transmission mechanisms using the plant pathogen Wheat Dwarf Virus that is transmitted by the leafhopper, Psammotettix alienus. We applied in situ hybridization to localize which leaf tissues were infected with transmitted virus DNA in barley host plants, proving that virus occurrence is restricted to phloem tissues. In the presence of the spider predator, Tibellus oblongus, we recorded the within leaf feeding behaviour of the herbivore using electrical penetration graph. The leafhopper altered its feeding behaviour in response to predation risk. Phloem ingestion, the feeding phase when virus acquisition occurs, was delayed and was less frequent. The phase when pathogen inoculation takes place, via the secretion of virus infected vector saliva, was shorter when predator was present. Our study thus provides experimental evidence that predators can potentially limit the spread of plant pathogens solely through influencing the feeding behaviour of vector organisms. |
format | Online Article Text |
id | pubmed-5992157 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59921572018-06-21 Could vectors’ fear of predators reduce the spread of plant diseases? Tholt, G. Kis, A. Medzihradszky, A. Szita, É. Tóth, Z. Havelda, Z. Samu, F. Sci Rep Article Predators influence the behaviour of prey and by doing so they potentially reduce pathogen transmission by a vector. Arthropod predators have been shown to reduce the consumption of plant biomass by pest herbivores, but their cascading non-consumptive effect on vector insects’ feeding behaviour and subsequent pathogen transmission has not been investigated experimentally before. Here we experimentally examined predator-mediated pathogen transmission mechanisms using the plant pathogen Wheat Dwarf Virus that is transmitted by the leafhopper, Psammotettix alienus. We applied in situ hybridization to localize which leaf tissues were infected with transmitted virus DNA in barley host plants, proving that virus occurrence is restricted to phloem tissues. In the presence of the spider predator, Tibellus oblongus, we recorded the within leaf feeding behaviour of the herbivore using electrical penetration graph. The leafhopper altered its feeding behaviour in response to predation risk. Phloem ingestion, the feeding phase when virus acquisition occurs, was delayed and was less frequent. The phase when pathogen inoculation takes place, via the secretion of virus infected vector saliva, was shorter when predator was present. Our study thus provides experimental evidence that predators can potentially limit the spread of plant pathogens solely through influencing the feeding behaviour of vector organisms. Nature Publishing Group UK 2018-06-07 /pmc/articles/PMC5992157/ /pubmed/29880845 http://dx.doi.org/10.1038/s41598-018-27103-y Text en © The Author(s) 2018 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 Tholt, G. Kis, A. Medzihradszky, A. Szita, É. Tóth, Z. Havelda, Z. Samu, F. Could vectors’ fear of predators reduce the spread of plant diseases? |
title | Could vectors’ fear of predators reduce the spread of plant diseases? |
title_full | Could vectors’ fear of predators reduce the spread of plant diseases? |
title_fullStr | Could vectors’ fear of predators reduce the spread of plant diseases? |
title_full_unstemmed | Could vectors’ fear of predators reduce the spread of plant diseases? |
title_short | Could vectors’ fear of predators reduce the spread of plant diseases? |
title_sort | could vectors’ fear of predators reduce the spread of plant diseases? |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5992157/ https://www.ncbi.nlm.nih.gov/pubmed/29880845 http://dx.doi.org/10.1038/s41598-018-27103-y |
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